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Verlinde formulas for nonsimply connected groups
In 1999, Fuchs and Schweigert proposed formulas of Verlinde type for moduli
spaces of surface group representations in compact nonsimply connected Lie
groups. In this paper, we will prove a symplectic version of their conjecture
for surfaces with at most one boundary component. A key tool in our
computations is Kostant's notion of a maximal torus in apposition.Comment: 30 pages, to appear in Kostant Memorial Volume, Progress in
Mathematics (Birkhauser
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