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arXiv · 1812.07354

On the Bonnafé--Dat--Rouquier Morita equivalence

Lucas Ruhstorfer
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Abstract

We prove that the cohomology group of a Deligne-Lusztig variety defines a Morita equivalence in a case which is not covered by the argument by Bonnafé, Dat and Rouquier, specifically we consider the situation for semisimple elements in type $D$ whose centralizer has non-cyclic component group.

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Lucas Ruhstorfer. 2018-12-18. On the Bonnafé--Dat--Rouquier Morita equivalence. https://arxiv.org/abs/1812.07354

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