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arXiv · 1610.01310

An Euler-Poincar\'e formula for depth zero Bernstein projector

Dan Barbasch·Dan Ciubotaru·Allen Moy
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Abstract

Work of Bezrukavnikov--Kazhdan--Varshavsky uses an equivariant system of trivial idempotents of Moy--Prasad groups to obtain an Euler--Poincar\'e formula for the r--depth Bernstein projector. We establish an Euler--Poincar\'e formula for the projector to an individual depth zero Bernstein component in terms of an equivariant system of Peter--Weyl idempotents of parahoric subgroups P associated to a block of the reductive quotient of P.

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BibTeXRIS

Dan Barbasch, Dan Ciubotaru, Allen Moy. 2016-10-05. An Euler-Poincar\'e formula for depth zero Bernstein projector. https://arxiv.org/abs/1610.01310

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