Distinguished strata in a reductive group

Lusztig, G.

doi:10.1090/ert/619

Distinguished strata in a reductive group
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Represent. Theory 26 (2022), 698-713 Request permission

Abstract:

The set of strata of a reductive group can be viewed as an enlargement of the set of unipotent classes. In this paper the notion of distinguished unipotent class is extended to this larger set. The strata of a Weyl group are also introduced and studied.

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