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<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center'><b><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial;font-weight:bold'>Dr. Kürşat Aker<o:p></o:p></span></font></b></p>
<p class=MsoNormal align=center style='mso-margin-top-alt:auto;margin-bottom:
12.0pt;text-align:center'><font size=3 color=black face=Arial><span
style='font-size:12.0pt;font-family:Arial;color:black'>Feza Gürsey Institute </span></font><font
face=Tahoma><span style='font-family:Tahoma'> <br>
18 December Friday, at <font color=blue><span style='color:blue'>14:00</span></font>;<br>
Bilgi Üniversitesi Dolapdere Kampüsü, Room:<font color=blue><span
style='color:blue'>130.</span></font></span></font><font color=red><span
style='color:red'><o:p></o:p></span></font></p>
<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center'><b><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial;font-weight:bold'>Title: </span></font></b><o:p></o:p></p>
<p class=MsoNormal align=center style='text-align:center;text-autospace:none'><font
size=3 face=Tahoma><span style='font-size:12.0pt;font-family:Tahoma'>Farahat-Higman
Rings<o:p></o:p></span></font></p>
<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center'><b><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial;font-weight:bold'> Abstract:<o:p></o:p></span></font></b></p>
<p class=MsoNormal style='text-autospace:none'><font size=3 face=Tahoma><span
style='font-size:12.0pt;font-family:Tahoma'>To study the center of the group
rings of symmetric groups, Farahat and Higman introduced a new ring, which we
call the Farahat-Higman ring.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=3 face=Tahoma><span
style='font-size:12.0pt;font-family:Tahoma'>In recent years, Wang has studied a
generalization of Farahat-Higman rings to investigate the centers of group
rings of wreath products of finite groups by symmetric groups.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=3 face=Tahoma><span
style='font-size:12.0pt;font-family:Tahoma'>In this seminar, we will introduce
a new Farahat-Higman type ring constructed from symmetric groups on even number
of letters and a hyperoctahedral subgroup.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face=Tahoma><span
style='font-size:12.0pt;font-family:Tahoma'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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