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		<id>http://wiki.manchester.ac.uk/blocks/index.php?action=history&amp;feed=atom&amp;title=M%283%5En%2C1%2C3%29</id>
		<title>M(3^n,1,3) - Revision history</title>
		<link rel="self" type="application/atom+xml" href="http://wiki.manchester.ac.uk/blocks/index.php?action=history&amp;feed=atom&amp;title=M%283%5En%2C1%2C3%29"/>
		<link rel="alternate" type="text/html" href="http://wiki.manchester.ac.uk/blocks/index.php?title=M(3%5En,1,3)&amp;action=history"/>
		<updated>2026-04-17T08:18:37Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
		<generator>MediaWiki 1.30.1</generator>

	<entry>
		<id>http://wiki.manchester.ac.uk/blocks/index.php?title=M(3%5En,1,3)&amp;diff=287&amp;oldid=prev</id>
		<title>Charles Eaton: /* Other notatable representatives */</title>
		<link rel="alternate" type="text/html" href="http://wiki.manchester.ac.uk/blocks/index.php?title=M(3%5En,1,3)&amp;diff=287&amp;oldid=prev"/>
				<updated>2018-09-08T14:40:16Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Other notatable representatives&lt;/span&gt;&lt;/span&gt;&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-GB&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 14:40, 8 September 2018&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-l40&quot; &gt;Line 40:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 40:&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;== Other notatable representatives ==&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;== Other notatable representatives ==&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 style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&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 style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;math&amp;gt;B_0(kPSL_2(q_n))&amp;lt;/math&amp;gt; for any &amp;lt;math&amp;gt;q_n&amp;lt;/math&amp;gt; a prime power such that &amp;lt;math&amp;gt;(q_n+1)_3=3^n&amp;lt;/math&amp;gt;.&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;div&gt;== Covering blocks and covered blocks ==&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;== Covering blocks and covered blocks ==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key wki_blocks:diff:version:1.11a:oldid:286:newid:287 --&gt;
&lt;/table&gt;</summary>
		<author><name>Charles Eaton</name></author>	</entry>

	<entry>
		<id>http://wiki.manchester.ac.uk/blocks/index.php?title=M(3%5En,1,3)&amp;diff=286&amp;oldid=prev</id>
		<title>Charles Eaton: Created page with &quot;{{blockbox |title = M(3^n,1,3) - &lt;math&gt;B_0(kPSL_2(2^{(3^{n-1})}))&lt;/math&gt;  |image = M(5,1,3)quiver.png |representative =  &lt;math&gt;B_0(kPSL_2(2^{(3^{n-1})}))&lt;/math&gt; |defect = C(...&quot;</title>
		<link rel="alternate" type="text/html" href="http://wiki.manchester.ac.uk/blocks/index.php?title=M(3%5En,1,3)&amp;diff=286&amp;oldid=prev"/>
				<updated>2018-09-08T14:37:02Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot;{{blockbox |title = M(3^n,1,3) - &amp;lt;math&amp;gt;B_0(kPSL_2(2^{(3^{n-1})}))&amp;lt;/math&amp;gt;  |image = M(5,1,3)quiver.png |representative =  &amp;lt;math&amp;gt;B_0(kPSL_2(2^{(3^{n-1})}))&amp;lt;/math&amp;gt; |defect = C(...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{blockbox&lt;br /&gt;
|title = M(3^n,1,3) - &amp;lt;math&amp;gt;B_0(kPSL_2(2^{(3^{n-1})}))&amp;lt;/math&amp;gt; &lt;br /&gt;
|image = M(5,1,3)quiver.png&lt;br /&gt;
|representative =  &amp;lt;math&amp;gt;B_0(kPSL_2(2^{(3^{n-1})}))&amp;lt;/math&amp;gt;&lt;br /&gt;
|defect = [[C(3^n)|&amp;lt;math&amp;gt;C_{3^n}&amp;lt;/math&amp;gt;]]&lt;br /&gt;
|inertialquotients = &amp;lt;math&amp;gt;C_2&amp;lt;/math&amp;gt;&lt;br /&gt;
|k(B) = &amp;lt;math&amp;gt;\frac{3^n+3}{2}&amp;lt;/math&amp;gt;&lt;br /&gt;
|l(B) = 2&lt;br /&gt;
|k-morita-frob = 1 &lt;br /&gt;
|Pic-k=&lt;br /&gt;
|cartan = &amp;lt;math&amp;gt;\left( \begin{array}{cc}&lt;br /&gt;
2 &amp;amp; 1 \\&lt;br /&gt;
1 &amp;amp; \frac{3^n+1}{2} \\&lt;br /&gt;
\end{array} \right)&amp;lt;/math&amp;gt;&lt;br /&gt;
|defect-morita-inv? = Yes&lt;br /&gt;
|inertial-morita-inv? = Yes&lt;br /&gt;
|O-morita? = Yes&lt;br /&gt;
|O-morita = &amp;lt;math&amp;gt;B_0(\mathcal{O} PSL_2(2^{(3^{n-1})}))&amp;lt;/math&amp;gt;&lt;br /&gt;
|decomp = &amp;lt;math&amp;gt;\left( \begin{array}{cc}&lt;br /&gt;
1 &amp;amp; 0 \\&lt;br /&gt;
0 &amp;amp; 1 \\&lt;br /&gt;
0 &amp;amp; 1 \\&lt;br /&gt;
\vdots &amp;amp; \vdots \\&lt;br /&gt;
0 &amp;amp; 1 \\&lt;br /&gt;
1 &amp;amp; 1 \\&lt;br /&gt;
\end{array}\right)&amp;lt;/math&amp;gt;&lt;br /&gt;
|O-morita-frob = 1&lt;br /&gt;
|Pic-O = &amp;lt;!-- &amp;lt;math&amp;gt;\mathcal{T}(B)=C_4&amp;lt;/math&amp;gt; --&amp;gt;|source? = Yes&lt;br /&gt;
|sourcereps = &lt;br /&gt;
|k-derived-known? = Yes&lt;br /&gt;
|k-derived = [[M(3^n,1,2)]]&lt;br /&gt;
|O-derived-known? = Yes&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
== Basic algebra ==&lt;br /&gt;
&lt;br /&gt;
'''Quiver:''' a:&amp;lt;1,2&amp;gt;, b:&amp;lt;2,1&amp;gt;, c:&amp;lt;2,2&amp;gt;&lt;br /&gt;
&lt;br /&gt;
'''Relations w.r.t. &amp;lt;math&amp;gt;k&amp;lt;/math&amp;gt;:''' &amp;lt;math&amp;gt;ac=cb=ba-c^{(3^n-1)/2}=0&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
== Other notatable representatives ==&lt;br /&gt;
&lt;br /&gt;
== Covering blocks and covered blocks ==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;!-- Let &amp;lt;math&amp;gt;N \triangleleft G&amp;lt;/math&amp;gt; with &amp;lt;math&amp;gt;p'&amp;lt;/math&amp;gt;-index and let &amp;lt;math&amp;gt;B&amp;lt;/math&amp;gt; be a block of &amp;lt;math&amp;gt;\mathcal{O} G&amp;lt;/math&amp;gt; covering a block &amp;lt;math&amp;gt;b&amp;lt;/math&amp;gt; of &amp;lt;math&amp;gt;\mathcal{O} N&amp;lt;/math&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
If &amp;lt;math&amp;gt;b&amp;lt;/math&amp;gt; lies in M(5,1,3), then &amp;lt;math&amp;gt;B&amp;lt;/math&amp;gt; must lie in M(5,1,3) or [[M(5,1,5)]]. &amp;lt;span style=&amp;quot;color: red&amp;quot;&amp;gt;Examples needed.&amp;lt;/span&amp;gt;&lt;br /&gt;
&lt;br /&gt;
If &amp;lt;math&amp;gt;B&amp;lt;/math&amp;gt; lies in M(5,1,3), then &amp;lt;math&amp;gt;b&amp;lt;/math&amp;gt; must lie in [[M(5,1,1)]], M(5,1,2) or [[M(5,1,4)]]. &amp;lt;span style=&amp;quot;color: red&amp;quot;&amp;gt;Examples needed.&amp;lt;/span&amp;gt;&lt;br /&gt;
 --&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Projective indecomposable modules ==&lt;br /&gt;
&lt;br /&gt;
Labelling the simple &amp;lt;math&amp;gt;B&amp;lt;/math&amp;gt;-modules by &amp;lt;math&amp;gt;S_1, S_2&amp;lt;/math&amp;gt;, the projective indecomposable modules have Loewy structure as follows:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;math&amp;gt;\begin{array}{cc}&lt;br /&gt;
   \begin{array}{c}&lt;br /&gt;
      S_1 \\&lt;br /&gt;
      S_2 \\&lt;br /&gt;
      S_1 \\&lt;br /&gt;
   \end{array}, &amp;amp; &lt;br /&gt;
\begin{array}{ccc}&lt;br /&gt;
     &amp;amp; S_2 &amp;amp; \\&lt;br /&gt;
      S_1 &amp;amp; &amp;amp; \begin{array}{c} S_2 \\ S_2 \\ \vdots \\ S_2 \\ \end{array} \\&lt;br /&gt;
     &amp;amp; S_2 &amp;amp; \\ &lt;br /&gt;
\end{array}&lt;br /&gt;
\end{array}&lt;br /&gt;
&amp;lt;/math&amp;gt;&lt;br /&gt;
          &lt;br /&gt;
== Irreducible characters ==&lt;br /&gt;
&lt;br /&gt;
All irreducible characters have height zero.&lt;br /&gt;
&lt;br /&gt;
[[C(3^n)|Back to &amp;lt;math&amp;gt;C_{3^n}&amp;lt;/math&amp;gt;]]&lt;/div&gt;</summary>
		<author><name>Charles Eaton</name></author>	</entry>

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