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	<title>Template:Mathematician data/doc - Revision history</title>
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	<updated>2026-04-30T10:22:45Z</updated>
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	<entry>
		<id>http://70.231.62.181/index.php?title=Template:Mathematician_data/doc&amp;diff=11268405&amp;oldid=prev</id>
		<title>imported&gt;DB1729: Category:Mathematician templates</title>
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		<updated>2023-10-18T20:35:31Z</updated>

		<summary type="html">&lt;p&gt;Category:Mathematician templates&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;
&amp;lt;!-- EDIT TEMPLATE DOCUMENTATION BELOW THIS LINE --&amp;gt;&lt;br /&gt;
&lt;br /&gt;
This template is used in /Data subpages of mathematician talk pages. These store data used by the Mathematics WikiProject to produce sortable tables of mathematicians. The syntax is&lt;br /&gt;
:&amp;lt;nowiki&amp;gt;{{Mathematician data|{{{key}}}|name= |dates= |contribs= }}&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
&lt;br /&gt;
===Usage of /Data subpages===&lt;br /&gt;
&lt;br /&gt;
*&amp;lt;nowiki&amp;gt;{{Talk:Johannes Kepler/Data|key=sortname}}&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
*:{{Talk:Johannes Kepler/Data|key=sortname}}&lt;br /&gt;
*&amp;lt;nowiki&amp;gt;{{Talk:Johannes Kepler/Data|key=dates}}&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
*:{{Talk:Johannes Kepler/Data|key=dates}}&lt;br /&gt;
*&amp;lt;nowiki&amp;gt;{{Talk:Johannes Kepler/Data|key=contribs}}&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
*:{{Talk:Johannes Kepler/Data|key=contribs}}&lt;br /&gt;
&lt;br /&gt;
Without any parameter, &amp;lt;nowiki&amp;gt;{{Talk:Johannes Kepler/Data}}&amp;lt;/nowiki&amp;gt; produces:&lt;br /&gt;
&lt;br /&gt;
{{Talk:Johannes Kepler/Data}}&lt;br /&gt;
&lt;br /&gt;
==Dates before 1000AD==&lt;br /&gt;
For dates before 1000AD the normal sort order does not work and a &amp;#039;&amp;#039;&amp;#039;sortdates&amp;#039;&amp;#039;&amp;#039; key is used to provide a correct sort order. This is hidden in a &amp;lt;nowiki&amp;gt;&amp;lt;span style=&amp;quot;display:none&amp;quot;&amp;gt;&amp;lt;/nowiki&amp;gt; tag in the mathematician table.&lt;br /&gt;
&lt;br /&gt;
For BC/BCE dates calculate &amp;#039;&amp;#039;d&amp;#039;&amp;#039; = 999 - abs(BCE date) and set &amp;lt;code&amp;gt;sortdates=&amp;amp;&amp;#039;&amp;#039;d&amp;#039;&amp;#039;&amp;lt;/code&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Hence Aristotle 384 – 322 BCE becomes&lt;br /&gt;
&amp;lt;syntaxhighlight lang=&amp;quot;wikitext&amp;quot;&amp;gt;&lt;br /&gt;
{{Mathematician data|{{{key}}}&lt;br /&gt;
|dates=384 – 322 BCE&lt;br /&gt;
|sortdates=&amp;amp;615&lt;br /&gt;
|sortname= Aristotle&lt;br /&gt;
|contribs= &lt;br /&gt;
}}&lt;br /&gt;
&amp;lt;/syntaxhighlight&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Similarly for dates between 1 AD and 999 AD extra 0s need to be added.&lt;br /&gt;
For Ptolemy 90 - 168 AD set &amp;lt;code&amp;gt;sortdates=0090&amp;lt;/code&amp;gt;&lt;br /&gt;
&amp;lt;syntaxhighlight lang=&amp;quot;wikitext&amp;quot;&amp;gt;&lt;br /&gt;
{{Mathematician data|{{{key}}}&lt;br /&gt;
|dates=90 - 168 &lt;br /&gt;
|sortdates=0090&lt;br /&gt;
|sortname= Ptolemy&lt;br /&gt;
|contribs= &lt;br /&gt;
}}&lt;br /&gt;
&amp;lt;/syntaxhighlight&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&amp;lt;includeonly&amp;gt;{{Sandbox other||&lt;br /&gt;
&amp;lt;!-- Categories below this line --&amp;gt;&lt;br /&gt;
[[Category:Mathematician templates]]&lt;br /&gt;
}}&amp;lt;/includeonly&amp;gt;&lt;/div&gt;</summary>
		<author><name>imported&gt;DB1729</name></author>
	</entry>
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