Poincaré duality and Langlands duality for extended affine Weyl groups
Niblo, Graham A. · Plymen, Roger · Wright, Nick
Original · EN
In this paper we construct an equivariant Poincaré duality between dual tori equipped with finite group actions. We use this to demonstrate that Langlands duality induces a rational isomorphism between the group C*-algebras of extended affine Weyl groups at the level of K-theory.
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