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A KK-theoretic perspective of quantization commutes with reduction

2020/11/01 by Rudy Rodsphon, Rodsphon, Rudy
Mathematics · #Advanced Operator Algebra Research #Advanced Topics in Algebra #Mathematical Analysis and Transform Methods

paper · pdf · doi:10.48550/arxiv.2011.00643

Abstract

We reframe Paradan-Vergne's approach to quantization commutes with reduction in KK-theory through a recent formalism introduced by Kasparov, focusing more especially the index theoretic parts that lead to their "Witten non-abelian localization formula". While our method uses the same ingredients as their's in spirit, interesting conceptual simplifications occur, and the relationship to the Ma-Tian-Zhang analytic approach becomes quite transparent.

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