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<
title >Atlas of Brauer Characters -- Corrections</
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<
font color=
"#AF0000" ><
h1 align=
"center" >Corrections to the A<
small >TLAS</
small > of Brauer Chara
cters</h1 ></font >
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<br /><br /> <body bgcolor="FFFFFF" >
<div class="p" ><!----></div>
This is the list of known errors in the A<font size="-2" >TLAS</font > of Brauer Characters.
<div class="p" ><!----></div>
We denote mathematical errors by ***.
We use C to denote improvements concerning grammar or
notational consistency.
Changes are shown in order of appearance.
<div class="p" ><!----></div>
<br /><br /><b>Introduction</b>
<div class="p" ><!----></div>
<br /><br />
<table >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > xi</td ><td valign="top" > : </td ><td valign="top" >
<td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Replace the last paragraph of Section 10 by the following.
<div class="p" ><!----></div>
If the indicator is 0 , then D(G) may or may not embed in a suitable unitary
group. Let *q be the map on the Brauer characters induced by the
field automorphism x 8594 ; x<sup >q</sup >.
Then D is unitary if and only if D(G) is defined over a field
with q<sup >2 </sup > elements and 966 ;<sup >*q</sup > is the complex conjugate
of 966 ;.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr ></td ></tr ></table ><!--hboxt--></table>
<div class="p" ><!----></div>
<br /><br /><b>The Tables</b>
<div class="p" ><!----></div>
<br /><br />
<table >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 22 </td ><td valign="top" > L<sub >3 </sub >(3 )</td ><td valign="top" > : </td ><td valign="top" >
<td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
In the 13 modular table , change 12 A 12 A
to 12 A 8727 ;.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 30 -32 </td ><td valign="top" > L<sub >2 </sub >(25 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Change element orders of 4 C, 12 C, 12 D
in 4 .G.2 <sub >3 </sub > to 4 , 12 , 12 .
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 71 -73 </td ><td valign="top" > U<sub >3 </sub >(4 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Change class names 10 A-B in G.2
to 10 E-F.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 79 -81 </td ><td valign="top" > U<sub >3 </sub >(5 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
In G.2 , change 6 C to 6 D and 8 B
to 8 C where applicable.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 108 </td ><td valign="top" > S<sub >4 </sub >(4 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
In G.4 , insert fusion signs joining characters 3 and
4 , 6 and 7 , 9 to 12 , 13 and 14 .
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 118 </td ><td valign="top" > L<sub >3 </sub >(7 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Change D8727 ;40 to D8727 ;tyle='color: green'>8727 ;5 .
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 130 -139 </td ><td valign="top" > U<sub >4 </sub >(3 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Change class name 12 J in G.2 <sub >3 </sub > to 12 K.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >C</td ><td valign="top" > p.</td ><td valign="top" align="right" > 170 </td ><td valign="top" > L<sub >4 </sub >(3 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Swap the two fusion markers for 966 ;<sub >27 </sub >-966 ;<sub >30 </sub >
in 2 .G.2 <sub >1 </sub >.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >C</td ><td valign="top" > p.</td ><td valign="top" align="right" > 181 </td ><td valign="top" > U<sub >5 </sub >(2 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Change chis to phis.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >C</td ><td valign="top" > p.</td ><td valign="top" align="right" > 186 </td ><td valign="top" > L<sub >3 </sub >(8 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Rewrite y8242 ;63 8727 ;le='color: green'>8727 ;8722 ; z218727 ;10 &17 to
y8242 ;63 8727 ;8727 ;+ z7. (Both expressions are equal.)
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > </td ><td valign="top" align="right" > </td ><td valign="top" > </td ><td valign="top" > </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
In the third and fourth degree 511 rows of the 73 modular table ,
exchange the indicators 176 ;6 and >176 ;2 in G.3 .
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 204 -205 </td ><td valign="top" > L<sub >3 </sub >(9 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
In the 7 modular table of G.2 <sub >1 </sub >, change the
indicator of the second degree 910 character from ++ to ++2 .
In the 13 modular table of G.2 <sub >3 </sub >, change the indicator of the second
degree 91 character from 176 ;176 ; to 176 ;176 ;2 .
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 206 </td ><td valign="top" > U<sub >3 </sub >(9 )</td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Change the value of the first degree 584 character
on the class 5 EF from 8727 ; to 2 +b58727 ;.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 219 </td ><td valign="top" > J<sub >3 </sub ></td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Swap the character values in G and 3 .G on the classes
17 A and 17 B, and the character values in G.2 on the classes
34 A and 34 B.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr ></td ></tr ></table ><!--hboxt--></table>
<div class="p" ><!----></div>
<br /><br /><b>Appendix 1 </b>
<div class="p" ><!----></div>
<br /><br />
<table >
<tr ><td valign="top" align="right" >C</td ><td valign="top" > p.</td ><td valign="top" align="right" > 284 </td ><td valign="top" > : </td ><td valign="top" >
<td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Add the entry w418727 ;3 124 ; X<sup >3 </sup > + X<sup >2 </sup > + X 124 ; C<sub >5 </sub >.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 286 </td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
The entries for b29 and b298727 ; must be as follows.
b29 124 ; X + 2 124 ; C<sub >2 </sub >, b29pan style='color: green'>8727;124 ; 2 X 124 ; C<sub >2 </sub >.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr >
<tr ><td valign="top" align="right" >***</td ><td valign="top" > p.</td ><td valign="top" align="right" > 288 </td ><td valign="top" > : </td ><td valign="top" >
</td ><td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Replace y98727 ;8727 ; by y9style='color: green'>8727 ;2 .
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr ></td ></tr ></table ><!--hboxt--></table>
<div class="p" ><!----></div>
<br /><br /><b>Appendix 2 </b>
<div class="p" ><!----></div>
<br /><br />
<table >
<tr ><td valign="top" align="right" >C</td ><td valign="top" > p.</td ><td valign="top" align="right" > 300 </td ><td valign="top" > : </td ><td valign="top" >
<td valign="top" ><table border="0" ><tr ><td valign="top" ></td ><td width="558" >
Remove the last change for U<sub >3 </sub >(8 ), which suggests to add a note
to the map . Note that the isoclines of 3 .G.3 <sub >1 </sub > are in fact isomorphic.
</td ></tr ></table ><!--vbox-->
</td ><td valign="top" ></td ></tr ></td ></tr ></table ><!--hboxt--></table>
<div class="p" ><!----></div>
<br /><br />The number of changes of each type is as follows:
14 ***
5 C.
<div class="p" ><!----></div>
<br /> File created on 18 April 2000 <br >
Last modified: 17 October 2024 by
<a href="mailto:sam@math.rwth-aachen.de" >Thomas Breuer</a>
<div class="p" ><!----></div>
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