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		<title>Pointless topology - Revision history</title>
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		<updated>2026-10-23T20:11:59Z</updated>
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	<entry>
		<id>http://wiki.karljones.com/index.php?title=Pointless_topology&amp;diff=18727&amp;oldid=prev</id>
		<title>Karl Jones: Created page with &quot;In mathematics, '''pointless topology''' (also called '''point-free''' or '''pointfree topology''') is an approach to topology that avoids mentioning points.  == Descr...&quot;</title>
		<link rel="alternate" type="text/html" href="http://wiki.karljones.com/index.php?title=Pointless_topology&amp;diff=18727&amp;oldid=prev"/>
				<updated>2016-09-22T17:53:31Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;In &lt;a href=&quot;/index.php/Mathematics&quot; title=&quot;Mathematics&quot;&gt;mathematics&lt;/a&gt;, &amp;#039;&amp;#039;&amp;#039;pointless topology&amp;#039;&amp;#039;&amp;#039; (also called &amp;#039;&amp;#039;&amp;#039;point-free&amp;#039;&amp;#039;&amp;#039; or &amp;#039;&amp;#039;&amp;#039;pointfree topology&amp;#039;&amp;#039;&amp;#039;) is an approach to &lt;a href=&quot;/index.php/Topology&quot; title=&quot;Topology&quot;&gt;topology&lt;/a&gt; that avoids mentioning points.  == Descr...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;In [[mathematics]], '''pointless topology''' (also called '''point-free''' or '''pointfree topology''') is an approach to [[topology]] that avoids mentioning points.&lt;br /&gt;
&lt;br /&gt;
== Description ==&lt;br /&gt;
&lt;br /&gt;
The name 'pointless topology' is due to [[John von Neumann]].&lt;br /&gt;
&lt;br /&gt;
The ideas of pointless topology are closely related to mereotopologies in which regions (sets) are treated as foundational without explicit reference to underlying point sets.&lt;br /&gt;
&lt;br /&gt;
== See also ==&lt;br /&gt;
&lt;br /&gt;
* [[Heyting algebra]]. A locale is a [[complete Heyting algebra]].&lt;br /&gt;
* Details on the relationship between the category of topological spaces and the category of locales, including the explicit construction of the duality between [[Sober space|sober spaces]] and spatial locales, are to be found in the article on [[Stone duality]].&lt;br /&gt;
* [[Point-free geometry]]&lt;br /&gt;
* [[Mereology]]&lt;br /&gt;
* [[Mereotopology]]&lt;br /&gt;
&lt;br /&gt;
== External links ==&lt;br /&gt;
&lt;br /&gt;
* [https://en.wikipedia.org/wiki/Pointless_topology Pointless topology] @ Wikipedia.org &lt;br /&gt;
&lt;br /&gt;
[[Category:Mathematics]]&lt;br /&gt;
[[Category:Topology]]&lt;/div&gt;</summary>
		<author><name>Karl Jones</name></author>	</entry>

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