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Mathematics Colloquium EVENT DETAIL Date:  Tuesday, January 18, 2011 Title:  Lie theory for noncrystallographic dihedral groups Abstract:  It was known for about 100 years that the only finite Coxeter groups which appear as Weyl groups of simple Lie groups are "crystallographic" and have type A, B, D, G2, F4 and E6, E7, E8. Thus, almost all finite dihedral groups are missing from this list. I will talk about our project with Arkady Berenstein, on developing "Lie theory'' for noncrystallographic finite Coxeter groups, including "Schubert pre-calculus," stability inequalities and tensor product decomposition. Speaker:  Misha Kapovich Institution:  UC Davis   Back to current Colloquium List Back to UM Math seminars page .