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	<title>P-matrix - Revision history</title>
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	<updated>2026-04-18T17:21:59Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://linear.subwiki.org/w/index.php?title=P-matrix&amp;diff=64&amp;oldid=prev</id>
		<title>Vipul: Created page with &quot;{{real square matrix property}}  ==Definition==  Suppose &lt;math&gt;n&lt;/math&gt; is a positive integer and &lt;math&gt;A&lt;/math&gt; is a &lt;math&gt;n \times n&lt;/math&gt; square matrix. We say that &lt;math&gt;...&quot;</title>
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		<updated>2014-05-01T16:52:51Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{real square matrix property}}  ==Definition==  Suppose &amp;lt;math&amp;gt;n&amp;lt;/math&amp;gt; is a positive integer and &amp;lt;math&amp;gt;A&amp;lt;/math&amp;gt; is a &amp;lt;math&amp;gt;n \times n&amp;lt;/math&amp;gt; square matrix. We say that &amp;lt;math&amp;gt;...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{real square matrix property}}&lt;br /&gt;
&lt;br /&gt;
==Definition==&lt;br /&gt;
&lt;br /&gt;
Suppose &amp;lt;math&amp;gt;n&amp;lt;/math&amp;gt; is a positive integer and &amp;lt;math&amp;gt;A&amp;lt;/math&amp;gt; is a &amp;lt;math&amp;gt;n \times n&amp;lt;/math&amp;gt; square matrix. We say that &amp;lt;math&amp;gt;A&amp;lt;/math&amp;gt; is a &amp;#039;&amp;#039;&amp;#039;P-matrix&amp;#039;&amp;#039;&amp;#039; if all the [[principal minor]]s of &amp;lt;math&amp;gt;A&amp;lt;/math&amp;gt; are positive.&lt;br /&gt;
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==Relation with other properties==&lt;br /&gt;
&lt;br /&gt;
===Stronger properties===&lt;br /&gt;
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{| class=&amp;quot;sortable&amp;quot; border=&amp;quot;1&amp;quot;&lt;br /&gt;
! Property !! Meaning !! Proof of implication !! Proof of strictness (reverse implication failure) !! Intermediate notions&lt;br /&gt;
|-&lt;br /&gt;
| [[Weaker than::symmetric positive-definite matrix]] || || || || {{intermediate notions short|P-matrix|symmetric positive-definite matrix}}&lt;br /&gt;
|-&lt;br /&gt;
| [[Weaker than::positive-definite matrix]] || || || || {{intermediate notions short|P-matrix|positive-definite matrix}}&lt;br /&gt;
|-&lt;br /&gt;
| [[Weaker than::nonsingular M-matrix]] || || || || {{intermediate notions short|P-matrix|nonsingular M-matrix}}&lt;br /&gt;
|}&lt;/div&gt;</summary>
		<author><name>Vipul</name></author>
	</entry>
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