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<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>Mercoledi'
9/7/2003, ore 14:45<BR>Aula Magna (piano terra - dip. di
Matematica)<BR></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman"
size=3></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT face="Times New Roman" size=3>Prof. Yuval
Roichman, Bar Ilan University<BR>"A Unified construction of Coxeter group
representations"<BR><BR>abstract: We present a unified construction of
representations for<BR>Coxeter groups and their Iwahori-Hecke algebras.<BR>The
construction is carried out by a natural assumption on the<BR>representation
matrices. For simply laced Coxeter groups, this assumption <BR>turns out to give
explicit simple representation matrices, generalizing <BR>the Young Orthogonal
Form. For the symmetric groups the resulting <BR>representations include the
irreducible ones, as in Kazhdan-Lusztig
<BR>theory.</FONT><BR></DIV></FONT></BODY></HTML>