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		<id>https://dictionary.iucr.org/index.php?action=history&amp;feed=atom&amp;title=Center</id>
		<title>Center - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://dictionary.iucr.org/index.php?action=history&amp;feed=atom&amp;title=Center"/>
		<link rel="alternate" type="text/html" href="https://dictionary.iucr.org/index.php?title=Center&amp;action=history"/>
		<updated>2026-06-04T00:36:25Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
		<generator>MediaWiki 1.30.0</generator>

	<entry>
		<id>https://dictionary.iucr.org/index.php?title=Center&amp;diff=4406&amp;oldid=prev</id>
		<title>BrianMcMahon: Tidied translations.</title>
		<link rel="alternate" type="text/html" href="https://dictionary.iucr.org/index.php?title=Center&amp;diff=4406&amp;oldid=prev"/>
				<updated>2017-11-09T17:00:02Z</updated>
		
		<summary type="html">&lt;p&gt;Tidied translations.&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 17:00, 9 November 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot; &gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;blue&lt;/del&gt;&amp;quot;&amp;gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Centre&lt;/del&gt;&amp;lt;/font&amp;gt; (''&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Fr&lt;/del&gt;'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;red&lt;/del&gt;&amp;quot;&amp;gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Zentrum&lt;/del&gt;&amp;lt;/font&amp;gt; (''&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Ge&lt;/del&gt;'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;green&lt;/del&gt;&amp;quot;&amp;gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Centro&lt;/del&gt;&amp;lt;/font&amp;gt; (''&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Sp&lt;/del&gt;'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;purple&amp;quot;&amp;gt;中心&amp;lt;/font&amp;gt; (''Ja'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;orange&lt;/del&gt;&amp;quot;&amp;gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;مركز&lt;/del&gt;&amp;lt;/font&amp;gt; (''&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Ar&lt;/del&gt;'').&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;orange&lt;/ins&gt;&amp;quot;&amp;gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;مركز&lt;/ins&gt;&amp;lt;/font&amp;gt; (''&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Ar&lt;/ins&gt;'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;blue&lt;/ins&gt;&amp;quot;&amp;gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Centre&lt;/ins&gt;&amp;lt;/font&amp;gt; (''&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Fr&lt;/ins&gt;'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;red&lt;/ins&gt;&amp;quot;&amp;gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Zentrum&lt;/ins&gt;&amp;lt;/font&amp;gt; (''&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Ge&lt;/ins&gt;'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;purple&amp;quot;&amp;gt;中心&amp;lt;/font&amp;gt; (''Ja'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;green&lt;/ins&gt;&amp;quot;&amp;gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Centro&lt;/ins&gt;&amp;lt;/font&amp;gt; (''&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Sp&lt;/ins&gt;'').&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BrianMcMahon</name></author>	</entry>

	<entry>
		<id>https://dictionary.iucr.org/index.php?title=Center&amp;diff=4287&amp;oldid=prev</id>
		<title>MassimoNespolo: Lang (Ar)</title>
		<link rel="alternate" type="text/html" href="https://dictionary.iucr.org/index.php?title=Center&amp;diff=4287&amp;oldid=prev"/>
				<updated>2017-09-14T09:14:38Z</updated>
		
		<summary type="html">&lt;p&gt;Lang (Ar)&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 09:14, 14 September 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot; &gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;blue&amp;quot;&amp;gt;Centre&amp;lt;/font&amp;gt; (''Fr'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/del&gt;&amp;lt;font color=&amp;quot;red&amp;quot;&amp;gt;Zentrum&amp;lt;/font&amp;gt; (''Ge'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/del&gt;&amp;lt;font color=&amp;quot;green&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''Sp'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/del&gt;&amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/del&gt;&amp;lt;font color=&amp;quot;purple&amp;quot;&amp;gt;中心&amp;lt;/font&amp;gt; (''Ja'').&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;blue&amp;quot;&amp;gt;Centre&amp;lt;/font&amp;gt; (''Fr'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/ins&gt;&amp;lt;font color=&amp;quot;red&amp;quot;&amp;gt;Zentrum&amp;lt;/font&amp;gt; (''Ge'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/ins&gt;&amp;lt;font color=&amp;quot;green&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''Sp'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/ins&gt;&amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/ins&gt;&amp;lt;font color=&amp;quot;purple&amp;quot;&amp;gt;中心&amp;lt;/font&amp;gt; (''Ja&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;''); &amp;lt;font color=&amp;quot;orange&amp;quot;&amp;gt;مركز&amp;lt;/font&amp;gt; (''Ar&lt;/ins&gt;'').&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>MassimoNespolo</name></author>	</entry>

	<entry>
		<id>https://dictionary.iucr.org/index.php?title=Center&amp;diff=3945&amp;oldid=prev</id>
		<title>BrianMcMahon: Style edits to align with printed edition</title>
		<link rel="alternate" type="text/html" href="https://dictionary.iucr.org/index.php?title=Center&amp;diff=3945&amp;oldid=prev"/>
				<updated>2017-05-13T10:22:48Z</updated>
		
		<summary type="html">&lt;p&gt;Style edits to align with printed edition&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 10:22, 13 May 2017&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot; &gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;blue&amp;quot;&amp;gt;Centre&amp;lt;/font&amp;gt; (''Fr'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;red&amp;quot;&amp;gt;Zentrum&amp;lt;/font&amp;gt; (''Ge'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;green&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''Sp'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'')&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;; &lt;/del&gt;&amp;lt;font color=&amp;quot;purple&amp;quot;&amp;gt;中心&amp;lt;/font&amp;gt; (''Ja'').&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;blue&amp;quot;&amp;gt;Centre&amp;lt;/font&amp;gt; (''Fr'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;red&amp;quot;&amp;gt;Zentrum&amp;lt;/font&amp;gt; (''Ge'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;green&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''Sp'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'')&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/ins&gt;&amp;lt;font color=&amp;quot;purple&amp;quot;&amp;gt;中心&amp;lt;/font&amp;gt; (''Ja'').&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The '''&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;center&lt;/del&gt;''' (or '''&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;centre&lt;/del&gt;''') of a [[group]] ''G'' is the set ''Z(G)'' = &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The '''&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;centre&lt;/ins&gt;''' (or '''&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;center&lt;/ins&gt;''') of a [[group]] ''G'' is the set ''Z(G)'' = &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{ ''a'' in ''G'' : ''a*g'' = ''g*a'' for all ''g'' in ''G'' } of elements commuting with all elements of ''G''. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{ ''a'' in ''G'' : ''a*g'' = ''g*a'' for all ''g'' in ''G'' } of elements commuting with all elements of ''G''. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;center &lt;/del&gt;is an [[Abelian group]].&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;centre &lt;/ins&gt;is an [[Abelian group]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;center &lt;/del&gt;of a group ''G'' is always a [[normal subgroup]] of ''G'', namely the [[group homomorphism|kernel]] &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;centre &lt;/ins&gt;of a group ''G'' is always a [[normal subgroup]] of ''G'', namely the [[group homomorphism|kernel]] &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;of the [[group homomorphism|homomorphism]] mapping an element ''a'' of ''G'' to the [[automorphism|inner automorphism]] ''f&amp;lt;sub&amp;gt;a&amp;lt;/sub&amp;gt;'': ''g'' &amp;amp;rarr; ''aga&amp;lt;sup&amp;gt;-1&amp;lt;/sup&amp;gt;''. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;of the [[group homomorphism|homomorphism]] mapping an element ''a'' of ''G'' to the [[automorphism|inner automorphism]] ''f&amp;lt;sub&amp;gt;a&amp;lt;/sub&amp;gt;'': ''g'' &amp;amp;rarr; ''aga&amp;lt;sup&amp;gt;-1&amp;lt;/sup&amp;gt;''. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>BrianMcMahon</name></author>	</entry>

	<entry>
		<id>https://dictionary.iucr.org/index.php?title=Center&amp;diff=3416&amp;oldid=prev</id>
		<title>MassimoNespolo: see also</title>
		<link rel="alternate" type="text/html" href="https://dictionary.iucr.org/index.php?title=Center&amp;diff=3416&amp;oldid=prev"/>
				<updated>2014-08-27T13:59:23Z</updated>
		
		<summary type="html">&lt;p&gt;see also&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 13:59, 27 August 2014&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l9&quot; &gt;Line 9:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 9:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;of the [[group homomorphism|homomorphism]] mapping an element ''a'' of ''G'' to the [[automorphism|inner automorphism]] ''f&amp;lt;sub&amp;gt;a&amp;lt;/sub&amp;gt;'': ''g'' &amp;amp;rarr; ''aga&amp;lt;sup&amp;gt;-1&amp;lt;/sup&amp;gt;''. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;of the [[group homomorphism|homomorphism]] mapping an element ''a'' of ''G'' to the [[automorphism|inner automorphism]] ''f&amp;lt;sub&amp;gt;a&amp;lt;/sub&amp;gt;'': ''g'' &amp;amp;rarr; ''aga&amp;lt;sup&amp;gt;-1&amp;lt;/sup&amp;gt;''. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;==See also==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;*[[Centralizer]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;*[[Normalizer]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;*[[Stabilizer]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Fundamental crystallography]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Fundamental crystallography]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>MassimoNespolo</name></author>	</entry>

	<entry>
		<id>https://dictionary.iucr.org/index.php?title=Center&amp;diff=3399&amp;oldid=prev</id>
		<title>MassimoNespolo: Ja</title>
		<link rel="alternate" type="text/html" href="https://dictionary.iucr.org/index.php?title=Center&amp;diff=3399&amp;oldid=prev"/>
				<updated>2014-08-24T15:39:02Z</updated>
		
		<summary type="html">&lt;p&gt;Ja&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 15:39, 24 August 2014&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot; &gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;blue&amp;quot;&amp;gt;Centre&amp;lt;/font&amp;gt; (''Fr''); &amp;lt;font color=&amp;quot;red&amp;quot;&amp;gt;Zentrum&amp;lt;/font&amp;gt; (''Ge''); &amp;lt;font color=&amp;quot;green&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''Sp''); &amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'').&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;blue&amp;quot;&amp;gt;Centre&amp;lt;/font&amp;gt; (''Fr''); &amp;lt;font color=&amp;quot;red&amp;quot;&amp;gt;Zentrum&amp;lt;/font&amp;gt; (''Ge''); &amp;lt;font color=&amp;quot;green&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''Sp''); &amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;''); &amp;lt;font color=&amp;quot;purple&amp;quot;&amp;gt;中心&amp;lt;/font&amp;gt; (''Ja&lt;/ins&gt;'').&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>MassimoNespolo</name></author>	</entry>

	<entry>
		<id>https://dictionary.iucr.org/index.php?title=Center&amp;diff=2979&amp;oldid=prev</id>
		<title>BerndSouvignier: initial definition</title>
		<link rel="alternate" type="text/html" href="https://dictionary.iucr.org/index.php?title=Center&amp;diff=2979&amp;oldid=prev"/>
				<updated>2009-04-02T11:34:34Z</updated>
		
		<summary type="html">&lt;p&gt;initial definition&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;lt;font color=&amp;quot;blue&amp;quot;&amp;gt;Centre&amp;lt;/font&amp;gt; (''Fr''); &amp;lt;font color=&amp;quot;red&amp;quot;&amp;gt;Zentrum&amp;lt;/font&amp;gt; (''Ge''); &amp;lt;font color=&amp;quot;green&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''Sp''); &amp;lt;font color=&amp;quot;black&amp;quot;&amp;gt;Centro&amp;lt;/font&amp;gt; (''It'').&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The '''center''' (or '''centre''') of a [[group]] ''G'' is the set ''Z(G)'' = &lt;br /&gt;
{ ''a'' in ''G'' : ''a*g'' = ''g*a'' for all ''g'' in ''G'' } of elements commuting with all elements of ''G''. &lt;br /&gt;
The center is an [[Abelian group]].&lt;br /&gt;
&lt;br /&gt;
The center of a group ''G'' is always a [[normal subgroup]] of ''G'', namely the [[group homomorphism|kernel]] &lt;br /&gt;
of the [[group homomorphism|homomorphism]] mapping an element ''a'' of ''G'' to the [[automorphism|inner automorphism]] ''f&amp;lt;sub&amp;gt;a&amp;lt;/sub&amp;gt;'': ''g'' &amp;amp;rarr; ''aga&amp;lt;sup&amp;gt;-1&amp;lt;/sup&amp;gt;''. &lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Fundamental crystallography]]&lt;/div&gt;</summary>
		<author><name>BerndSouvignier</name></author>	</entry>

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