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A symplectic proof of Verlinde factorization

Eckhard Meinrenken, Chris Woodward

dg-gaarXiv:dg-ga/9612018

Abstract

We prove a multiplicity formula for Riemann-Roch numbers of reductions of Hamiltonian actions of loop groups. This includes as a special case the factorization formula for the quantum dimension of the moduli space of flat connections over a Riemann surface.

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