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	<id>https://wiki.xdi8.top/index.php?action=history&amp;feed=atom&amp;title=%EE%82%84-indicator</id>
	<title>-indicator - 版本历史</title>
	<link rel="self" type="application/atom+xml" href="https://wiki.xdi8.top/index.php?action=history&amp;feed=atom&amp;title=%EE%82%84-indicator"/>
	<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;action=history"/>
	<updated>2026-04-18T05:30:10Z</updated>
	<subtitle>本wiki上该页面的版本历史</subtitle>
	<generator>MediaWiki 1.43.0</generator>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38962&amp;oldid=prev</id>
		<title>物灵：​已还原Visaa11（讨论）的编辑至最后由荆哲修订的版本</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38962&amp;oldid=prev"/>
		<updated>2025-04-06T06:19:37Z</updated>

		<summary type="html">&lt;p&gt;已还原&lt;a href=&quot;/wiki/Special:%E7%94%A8%E6%88%B7%E8%B4%A1%E7%8C%AE/Visaa11&quot; title=&quot;Special:用户贡献/Visaa11&quot;&gt;Visaa11&lt;/a&gt;（&lt;a href=&quot;/index.php?title=User_talk:Visaa11&amp;amp;action=edit&amp;amp;redlink=1&quot; class=&quot;new&quot; title=&quot;User talk:Visaa11（页面不存在）&quot;&gt;讨论&lt;/a&gt;）的编辑至最后由&lt;a href=&quot;/wiki/User:%E8%8D%86%E5%93%B2&quot; class=&quot;mw-redirect&quot; title=&quot;User:荆哲&quot;&gt;荆哲&lt;/a&gt;修订的版本&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年4月6日 (日) 14:19的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;第1行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第1行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/del&gt;&#039;&#039;Eye-indicator&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/del&gt;&#039;&#039;, Shidinn language: - &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, pronunciation: /æe-ẽɪ̃nzʷɐonzʷɐ̃nzɹ̩ xæ̃nzɹ̩sʷəʊnzɹ̩/&lt;/del&gt;) is a mathematical function mapping [https://mathworld.wolfram.com/PrimeNumber.html prime numbers] to [https://mathworld.wolfram.com/p-adicNumber.html &#039;&#039;p&#039;&#039;-adic numbers], indicating how &quot;similar&quot; two primes are, in the sense of [https://mathworld.wolfram.com/QuadraticResidue.html quadratic residues].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: &#039;&#039;Eye-indicator&#039;&#039;, Shidinn language: - ) is a mathematical function mapping [https://mathworld.wolfram.com/PrimeNumber.html prime numbers] to [https://mathworld.wolfram.com/p-adicNumber.html &#039;&#039;p&#039;&#039;-adic numbers], indicating how &quot;similar&quot; two primes are, in the sense of [https://mathworld.wolfram.com/QuadraticResidue.html quadratic residues].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key xdi8:diff:1.41:old-38934:rev-38962:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>物灵</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38934&amp;oldid=prev</id>
		<title>2025年4月3日 (四) 16:22 Visaa11</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38934&amp;oldid=prev"/>
		<updated>2025-04-03T16:22:35Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年4月4日 (五) 00:22的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;第1行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第1行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: &#039;&#039;Eye-indicator&#039;&#039;, Shidinn language: - ) is a mathematical function mapping [https://mathworld.wolfram.com/PrimeNumber.html prime numbers] to [https://mathworld.wolfram.com/p-adicNumber.html &#039;&#039;p&#039;&#039;-adic numbers], indicating how &quot;similar&quot; two primes are, in the sense of [https://mathworld.wolfram.com/QuadraticResidue.html quadratic residues].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/ins&gt;&#039;&#039;Eye-indicator&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/ins&gt;&#039;&#039;, Shidinn language: - &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, pronunciation: /æe-ẽɪ̃nzʷɐonzʷɐ̃nzɹ̩ xæ̃nzɹ̩sʷəʊnzɹ̩/&lt;/ins&gt;) is a mathematical function mapping [https://mathworld.wolfram.com/PrimeNumber.html prime numbers] to [https://mathworld.wolfram.com/p-adicNumber.html &#039;&#039;p&#039;&#039;-adic numbers], indicating how &quot;similar&quot; two primes are, in the sense of [https://mathworld.wolfram.com/QuadraticResidue.html quadratic residues].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Visaa11</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38140&amp;oldid=prev</id>
		<title>2025年3月15日 (六) 08:57 荆哲</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38140&amp;oldid=prev"/>
		<updated>2025-03-15T08:57:47Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 16:57的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l28&quot;&gt;第28行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第28行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:English]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:English]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:Mathematics]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38139&amp;oldid=prev</id>
		<title>2025年3月15日 (六) 08:57 荆哲</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38139&amp;oldid=prev"/>
		<updated>2025-03-15T08:57:00Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 16:57的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l26&quot;&gt;第26行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第26行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== See also ==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;== See also ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{译文|zh = -指示函数}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{译文|zh = -指示函数}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Category:English]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key xdi8:diff:1.41:old-38138:rev-38139:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38138&amp;oldid=prev</id>
		<title>2025年3月15日 (六) 08:56 荆哲</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38138&amp;oldid=prev"/>
		<updated>2025-03-15T08:56:17Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 16:56的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l23&quot;&gt;第23行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第23行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Usage==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Usage==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &amp;quot;primes&amp;quot; &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the [https://mathworld.wolfram.com/p-adicNorm.html &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic distance] |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; measures how similar &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; &amp;lt; &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; for a positive integer &amp;#039;&amp;#039;n&amp;#039;&amp;#039;, then we can obtain that both negative integers -1..-&amp;#039;&amp;#039;n&amp;#039;&amp;#039; and positive integers 1..&amp;#039;&amp;#039;n&amp;#039;&amp;#039; (think why?) &amp;quot;performs&amp;quot; consistently on &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &amp;quot;primes&amp;quot; &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the [https://mathworld.wolfram.com/p-adicNorm.html &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic distance] |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; measures how similar &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; &amp;lt; &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; for a positive integer &amp;#039;&amp;#039;n&amp;#039;&amp;#039;, then we can obtain that both negative integers -1..-&amp;#039;&amp;#039;n&amp;#039;&amp;#039; and positive integers 1..&amp;#039;&amp;#039;n&amp;#039;&amp;#039; (think why?) &amp;quot;performs&amp;quot; consistently on &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;== See also ==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{译文|zh = -指示函数}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key xdi8:diff:1.41:old-38136:rev-38138:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38136&amp;oldid=prev</id>
		<title>2025年3月15日 (六) 08:52 荆哲</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38136&amp;oldid=prev"/>
		<updated>2025-03-15T08:52:41Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 16:52的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l6&quot;&gt;第6行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第6行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; Kronecker(-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;|&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; Kronecker(-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;|&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;where Kronecker means the [https://mathworld.wolfram.com/KroneckerSymbol.html Kronecker symbol]; for &#039;&#039;q&#039;&#039;=∞, since the local field on the &quot;infinity prime&quot;, i.e. &#039;&#039;&#039;Q&#039;&#039;&#039;&amp;lt;sub&amp;gt;∞&amp;lt;/sub&amp;gt;, stands for the real number field &#039;&#039;&#039;R&#039;&#039;&#039;, and all negative numbers &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;are &lt;/del&gt;not square roots in &#039;&#039;&#039;R&#039;&#039;&#039;, we define:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;where Kronecker means the [https://mathworld.wolfram.com/KroneckerSymbol.html Kronecker symbol]; for &#039;&#039;q&#039;&#039;=∞, since the local field on the &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;so-called &lt;/ins&gt;&quot;infinity prime&quot;, i.e. &#039;&#039;&#039;Q&#039;&#039;&#039;&amp;lt;sub&amp;gt;∞&amp;lt;/sub&amp;gt;, stands for the real number field &#039;&#039;&#039;R&#039;&#039;&#039;, and all negative numbers &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;do &lt;/ins&gt;not &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;have &lt;/ins&gt;square roots in &#039;&#039;&#039;R&#039;&#039;&#039;, we define:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(∞) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; -&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; = &amp;#039;&amp;#039;p&amp;#039;&amp;#039;/(&amp;#039;&amp;#039;p&amp;#039;&amp;#039;-1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(∞) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; -&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; = &amp;#039;&amp;#039;p&amp;#039;&amp;#039;/(&amp;#039;&amp;#039;p&amp;#039;&amp;#039;-1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Obviously, for any prime &#039;&#039;q&#039;&#039; (including &quot;infinity prime&quot;), the &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;terms &lt;/del&gt;of the infinity sum are periodic, thus the value of -indicator is definitely a [https://mathworld.wolfram.com/RationalNumber.html rational number]. Furthermore, &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;&#039;&#039;q&#039;&#039;&amp;lt;/sup&amp;gt;-1) is an integer if &#039;&#039;q&#039;&#039; is a finite odd prime, and so is &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(2) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;8&amp;lt;/sup&amp;gt;-1).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Obviously, for any prime &#039;&#039;q&#039;&#039; (including &quot;infinity prime&quot;), the &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;coefficients &lt;/ins&gt;of the infinity sum &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;above &lt;/ins&gt;are periodic, thus the value of -indicator is definitely a [https://mathworld.wolfram.com/RationalNumber.html rational number]. Furthermore, &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;&#039;&#039;q&#039;&#039;&amp;lt;/sup&amp;gt;-1) is an integer if &#039;&#039;q&#039;&#039; is a finite odd prime, and so is &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(2) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;8&amp;lt;/sup&amp;gt;-1).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Examples==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Examples==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key xdi8:diff:1.41:old-38133:rev-38136:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38133&amp;oldid=prev</id>
		<title>2025年3月15日 (六) 03:04 荆哲</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38133&amp;oldid=prev"/>
		<updated>2025-03-15T03:04:40Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 11:04的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;第1行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第1行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: &#039;&#039;Eye-indicator&#039;&#039;, Shidinn language: - ) is a mathematical function mapping prime numbers to &#039;&#039;p&#039;&#039;-adic numbers, indicating how &quot;similar&quot; two primes are, in the sense of quadratic residues.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: &#039;&#039;Eye-indicator&#039;&#039;, Shidinn language: - ) is a mathematical function mapping &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[https://mathworld.wolfram.com/PrimeNumber.html &lt;/ins&gt;prime numbers&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;] &lt;/ins&gt;to &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[https://mathworld.wolfram.com/p-adicNumber.html &lt;/ins&gt;&#039;&#039;p&#039;&#039;-adic numbers&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]&lt;/ins&gt;, indicating how &quot;similar&quot; two primes are, in the sense of &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[https://mathworld.wolfram.com/QuadraticResidue.html &lt;/ins&gt;quadratic residues&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l6&quot;&gt;第6行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第6行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; Kronecker(-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;|&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; Kronecker(-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;|&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;where Kronecker means the Kronecker symbol; for &#039;&#039;q&#039;&#039;=∞, since the local field on the &quot;infinity prime&quot;, i.e. &#039;&#039;&#039;Q&#039;&#039;&#039;&amp;lt;sub&amp;gt;∞&amp;lt;/sub&amp;gt;, stands for the real number field &#039;&#039;&#039;R&#039;&#039;&#039;, and all negative numbers are not square roots in &#039;&#039;&#039;R&#039;&#039;&#039;, we define:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;where Kronecker means the &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[https://mathworld.wolfram.com/KroneckerSymbol.html &lt;/ins&gt;Kronecker symbol&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]&lt;/ins&gt;; for &#039;&#039;q&#039;&#039;=∞, since the local field on the &quot;infinity prime&quot;, i.e. &#039;&#039;&#039;Q&#039;&#039;&#039;&amp;lt;sub&amp;gt;∞&amp;lt;/sub&amp;gt;, stands for the real number field &#039;&#039;&#039;R&#039;&#039;&#039;, and all negative numbers are not square roots in &#039;&#039;&#039;R&#039;&#039;&#039;, we define:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(∞) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; -&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; = &amp;#039;&amp;#039;p&amp;#039;&amp;#039;/(&amp;#039;&amp;#039;p&amp;#039;&amp;#039;-1)&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(∞) := ∑&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;∈&amp;#039;&amp;#039;&amp;#039;N&amp;#039;&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;+&amp;lt;/sup&amp;gt;&amp;lt;/sub&amp;gt; -&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; = &amp;#039;&amp;#039;p&amp;#039;&amp;#039;/(&amp;#039;&amp;#039;p&amp;#039;&amp;#039;-1)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Obviously, for any prime &#039;&#039;q&#039;&#039; (including &quot;infinity prime&quot;), the terms of the infinity sum are periodic, thus the value of -indicator is definitely a rational number. Furthermore, &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;&#039;&#039;q&#039;&#039;&amp;lt;/sup&amp;gt;-1) is an integer if &#039;&#039;q&#039;&#039; is a finite odd prime, and so is &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(2) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;8&amp;lt;/sup&amp;gt;-1).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Obviously, for any prime &#039;&#039;q&#039;&#039; (including &quot;infinity prime&quot;), the terms of the infinity sum are periodic, thus the value of -indicator is definitely a &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[https://mathworld.wolfram.com/RationalNumber.html &lt;/ins&gt;rational number&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]&lt;/ins&gt;. Furthermore, &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;&#039;&#039;q&#039;&#039;&amp;lt;/sup&amp;gt;-1) is an integer if &#039;&#039;q&#039;&#039; is a finite odd prime, and so is &amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(2) times (&#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;8&amp;lt;/sup&amp;gt;-1).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Examples==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Examples==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l22&quot;&gt;第22行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第22行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Usage==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Usage==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &quot;primes&quot; &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the &#039;&#039;p&#039;&#039;-adic distance |&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt; measures how similar &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt; &amp;lt; &#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;-&#039;&#039;n&#039;&#039;&amp;lt;/sup&amp;gt; for a positive integer &#039;&#039;n&#039;&#039;, then we can obtain that both negative integers -1..-&#039;&#039;n&#039;&#039; and positive integers 1..&#039;&#039;n&#039;&#039; (think why?) &quot;performs&quot; consistently on &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &quot;primes&quot; &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[https://mathworld.wolfram.com/p-adicNorm.html &lt;/ins&gt;&#039;&#039;p&#039;&#039;-adic distance&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;] &lt;/ins&gt;|&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt; measures how similar &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt;(&#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&#039;&#039;p&#039;&#039;&amp;lt;/sub&amp;gt; &amp;lt; &#039;&#039;p&#039;&#039;&amp;lt;sup&amp;gt;-&#039;&#039;n&#039;&#039;&amp;lt;/sup&amp;gt; for a positive integer &#039;&#039;n&#039;&#039;, then we can obtain that both negative integers -1..-&#039;&#039;n&#039;&#039; and positive integers 1..&#039;&#039;n&#039;&#039; (think why?) &quot;performs&quot; consistently on &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &#039;&#039;q&#039;&#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key xdi8:diff:1.41:old-38132:rev-38133:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38132&amp;oldid=prev</id>
		<title>2025年3月15日 (六) 02:58 荆哲</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38132&amp;oldid=prev"/>
		<updated>2025-03-15T02:58:42Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 10:58的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;第1行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第1行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: Eye-indicator, Shidinn language: - ) is a mathematical function mapping prime numbers to &#039;&#039;p&#039;&#039;-adic numbers, indicating how &quot;similar&quot; two primes are, in the sense of quadratic residues.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&#039;&#039;&#039;-indicator&#039;&#039;&#039; (pronunciation: &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&lt;/ins&gt;Eye-indicator&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039;&lt;/ins&gt;, Shidinn language: - ) is a mathematical function mapping prime numbers to &#039;&#039;p&#039;&#039;-adic numbers, indicating how &quot;similar&quot; two primes are, in the sense of quadratic residues.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Definition==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38131&amp;oldid=prev</id>
		<title>荆哲：​/* Examples */</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38131&amp;oldid=prev"/>
		<updated>2025-03-15T02:58:22Z</updated>

		<summary type="html">&lt;p&gt;&lt;span class=&quot;autocomment&quot;&gt;Examples&lt;/span&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 10:58的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot;&gt;第19行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第19行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(7)=-453/1093&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(7)=-453/1093&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(11)=-24249/88573&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(11)=-24249/88573&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;...&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;* &lt;/ins&gt;...&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Usage==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Usage==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &amp;quot;primes&amp;quot; &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic distance |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; measures how similar &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; &amp;lt; &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; for a positive integer &amp;#039;&amp;#039;n&amp;#039;&amp;#039;, then we can obtain that both negative integers -1..-&amp;#039;&amp;#039;n&amp;#039;&amp;#039; and positive integers 1..&amp;#039;&amp;#039;n&amp;#039;&amp;#039; (think why?) &amp;quot;performs&amp;quot; consistently on &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &amp;quot;primes&amp;quot; &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic distance |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; measures how similar &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; &amp;lt; &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; for a positive integer &amp;#039;&amp;#039;n&amp;#039;&amp;#039;, then we can obtain that both negative integers -1..-&amp;#039;&amp;#039;n&amp;#039;&amp;#039; and positive integers 1..&amp;#039;&amp;#039;n&amp;#039;&amp;#039; (think why?) &amp;quot;performs&amp;quot; consistently on &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key xdi8:diff:1.41:old-38130:rev-38131:php=table --&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
	<entry>
		<id>https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38130&amp;oldid=prev</id>
		<title>2025年3月15日 (六) 02:58 荆哲</title>
		<link rel="alternate" type="text/html" href="https://wiki.xdi8.top/index.php?title=%EE%82%84-indicator&amp;diff=38130&amp;oldid=prev"/>
		<updated>2025-03-15T02:58:07Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;zh&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;←上一版本&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;2025年3月15日 (六) 10:58的版本&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;第1行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第1行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;-indicator&amp;#039;&amp;#039;&amp;#039; (pronunciation: Eye-indicator, Shidinn language: - ) is a mathematical function mapping prime numbers to &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic numbers, indicating how &amp;quot;similar&amp;quot; two primes are, in the sense of quadratic residues.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;-indicator&amp;#039;&amp;#039;&amp;#039; (pronunciation: Eye-indicator, Shidinn language: - ) is a mathematical function mapping prime numbers to &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic numbers, indicating how &amp;quot;similar&amp;quot; two primes are, in the sense of quadratic residues.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==Definition==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any odd prime &amp;#039;&amp;#039;p&amp;#039;&amp;#039;, define the -indicator &amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; : {&amp;#039;&amp;#039;q&amp;#039;&amp;#039;:&amp;#039;&amp;#039;q&amp;#039;&amp;#039; is a prime}∪{∞}→&amp;#039;&amp;#039;&amp;#039;Q&amp;#039;&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; , where &amp;#039;&amp;#039;&amp;#039;Q&amp;#039;&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; is the &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic number field:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any odd prime &amp;#039;&amp;#039;p&amp;#039;&amp;#039;, define the -indicator &amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; : {&amp;#039;&amp;#039;q&amp;#039;&amp;#039;:&amp;#039;&amp;#039;q&amp;#039;&amp;#039; is a prime}∪{∞}→&amp;#039;&amp;#039;&amp;#039;Q&amp;#039;&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; , where &amp;#039;&amp;#039;&amp;#039;Q&amp;#039;&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; is the &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic number field:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot;&gt;第11行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第12行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Obviously, for any prime &amp;#039;&amp;#039;q&amp;#039;&amp;#039; (including &amp;quot;infinity prime&amp;quot;), the terms of the infinity sum are periodic, thus the value of -indicator is definitely a rational number. Furthermore, &amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) times (&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt;-1) is an integer if &amp;#039;&amp;#039;q&amp;#039;&amp;#039; is a finite odd prime, and so is &amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(2) times (&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;8&amp;lt;/sup&amp;gt;-1).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Obviously, for any prime &amp;#039;&amp;#039;q&amp;#039;&amp;#039; (including &amp;quot;infinity prime&amp;quot;), the terms of the infinity sum are periodic, thus the value of -indicator is definitely a rational number. Furthermore, &amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;) times (&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt;-1) is an integer if &amp;#039;&amp;#039;q&amp;#039;&amp;#039; is a finite odd prime, and so is &amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(2) times (&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;8&amp;lt;/sup&amp;gt;-1).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Here are some examples:&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==Examples==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Here are some examples &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;for &#039;&#039;p&#039;&#039;=3&lt;/ins&gt;:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(2)=-12/41&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(2)=-12/41&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(3)=-3/13&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* &amp;lt;sub&amp;gt;3&amp;lt;/sub&amp;gt;(3)=-3/13&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot;&gt;第19行：&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;第21行：&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;...&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;...&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==Usage==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &amp;quot;primes&amp;quot; &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic distance |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; measures how similar &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; &amp;lt; &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; for a positive integer &amp;#039;&amp;#039;n&amp;#039;&amp;#039;, then we can obtain that both negative integers -1..-&amp;#039;&amp;#039;n&amp;#039;&amp;#039; and positive integers 1..&amp;#039;&amp;#039;n&amp;#039;&amp;#039; (think why?) &amp;quot;performs&amp;quot; consistently on &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;For any two &amp;quot;primes&amp;quot; &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; (no matter finite or infinite), the &amp;#039;&amp;#039;p&amp;#039;&amp;#039;-adic distance |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; measures how similar &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt; and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; are. If |&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;)-&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt;(&amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;)|&amp;lt;sub&amp;gt;&amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;/sub&amp;gt; &amp;lt; &amp;#039;&amp;#039;p&amp;#039;&amp;#039;&amp;lt;sup&amp;gt;-&amp;#039;&amp;#039;n&amp;#039;&amp;#039;&amp;lt;/sup&amp;gt; for a positive integer &amp;#039;&amp;#039;n&amp;#039;&amp;#039;, then we can obtain that both negative integers -1..-&amp;#039;&amp;#039;n&amp;#039;&amp;#039; and positive integers 1..&amp;#039;&amp;#039;n&amp;#039;&amp;#039; (think why?) &amp;quot;performs&amp;quot; consistently on &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;-adic and &amp;#039;&amp;#039;q&amp;#039;&amp;#039;&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;-adic (about whether the integer is a square).&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>荆哲</name></author>
	</entry>
</feed>