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	<updated>2026-09-30T14:17:25Z</updated>
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	<entry>
		<id>https://ideawaza.com/index.php?title=Archive:Inverse_semigroup&amp;diff=13485</id>
		<title>Archive:Inverse semigroup</title>
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		<updated>2005-06-23T14:57:47Z</updated>

		<summary type="html">&lt;p&gt;160.102.72.223: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;An &#039;&#039;&#039;inverse semigroup&#039;&#039;&#039; &#039;&#039;S&#039;&#039; is a [[semigroup]] such that for every &#039;&#039;x &amp;amp;isin; S&#039;&#039; there is a unique &#039;&#039;&#039;inverse&#039;&#039;&#039; &#039;&#039;y&#039;&#039; such that &#039;&#039;x = xyx&#039;&#039; and &#039;&#039;y = yxy&#039;&#039;.&lt;br /&gt;
&lt;br /&gt;
[[Category:Semigroup theory]]&lt;br /&gt;
&lt;br /&gt;
{{Math-stub}}&lt;/div&gt;</summary>
		<author><name>160.102.72.223</name></author>
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