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	<title>Template:SubQED/doc - Revision history</title>
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	<updated>2026-07-22T18:10:07Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.mathepedia.wiki/w/index.php?title=Template:SubQED/doc&amp;diff=214&amp;oldid=prev</id>
		<title>InfernalAtom683: Created page with &quot;{{Documentation subpage}}  The &#039;&#039;&#039;SubQED template&#039;&#039;&#039; marks the end of a subordinate argument within a proof. It displays a solid square, &lt;math&gt;\blacksquare&lt;/math&gt;.  The template {{tl|QED}} redirects here.  == Usage ==  Place the template at the end of a claim, case, implication, or other subordinate argument:  &lt;pre&gt; Suppose that &lt;math&gt;x\in\ker f&lt;/math&gt;. Then &lt;math&gt;f(x)=e&lt;/math&gt;, and hence &lt;math&gt;x\in N&lt;/math&gt;. {{SubQED}} &lt;/pre&gt;  It may also be invoked through its shorter...&quot;</title>
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		<updated>2026-07-16T08:39:26Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{Documentation subpage}}  The &amp;#039;&amp;#039;&amp;#039;SubQED template&amp;#039;&amp;#039;&amp;#039; marks the end of a subordinate argument within a proof. It displays a solid square, &amp;lt;math&amp;gt;\blacksquare&amp;lt;/math&amp;gt;.  The template {{tl|QED}} redirects here.  == Usage ==  Place the template at the end of a claim, case, implication, or other subordinate argument:  &amp;lt;pre&amp;gt; Suppose that &amp;lt;math&amp;gt;x\in\ker f&amp;lt;/math&amp;gt;. Then &amp;lt;math&amp;gt;f(x)=e&amp;lt;/math&amp;gt;, and hence &amp;lt;math&amp;gt;x\in N&amp;lt;/math&amp;gt;. {{SubQED}} &amp;lt;/pre&amp;gt;  It may also be invoked through its shorter...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{Documentation subpage}}&lt;br /&gt;
&lt;br /&gt;
The &amp;#039;&amp;#039;&amp;#039;SubQED template&amp;#039;&amp;#039;&amp;#039; marks the end of a subordinate argument within a proof. It displays a solid square, &amp;lt;math&amp;gt;\blacksquare&amp;lt;/math&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
The template {{tl|QED}} redirects here.&lt;br /&gt;
&lt;br /&gt;
== Usage ==&lt;br /&gt;
&lt;br /&gt;
Place the template at the end of a claim, case, implication, or other subordinate argument:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
Suppose that &amp;lt;math&amp;gt;x\in\ker f&amp;lt;/math&amp;gt;. Then &amp;lt;math&amp;gt;f(x)=e&amp;lt;/math&amp;gt;, and hence&lt;br /&gt;
&amp;lt;math&amp;gt;x\in N&amp;lt;/math&amp;gt;. {{SubQED}}&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
It may also be invoked through its shorter alias:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
{{QED}}&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
== Conventions ==&lt;br /&gt;
&lt;br /&gt;
The solid square marks the end of a subordinate proof or a distinct stage of an enclosing proof. It should not normally be used after every paragraph or calculation.&lt;br /&gt;
&lt;br /&gt;
For the end of an entire proof, use {{tl|ProofQED}}, which displays an open square.&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
&lt;br /&gt;
* {{tl|ProofQED}}&lt;br /&gt;
&lt;br /&gt;
&amp;lt;includeonly&amp;gt;&lt;br /&gt;
[[Category:Proof templates]]&lt;br /&gt;
&amp;lt;/includeonly&amp;gt;&lt;/div&gt;</summary>
		<author><name>InfernalAtom683</name></author>
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