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arXiv · 2210.14422

Unipotent character sheaves and strata of a reductive group

G. Lusztig
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Abstract

Let H be a connected reductive group over an algebraically closed field. We define a surjective map from the set CS(H) of unipotent character sheaves on H (up to isomorphism) to the set of strata of H. To do this we use the generalized Springer correspondence. We also give a new parametrization of CS(H) in terms of data coming from bad characteristic. Some minor errors corrected.

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BibTeXRIS

G. Lusztig. 2022-10-26. Unipotent character sheaves and strata of a reductive group. https://arxiv.org/abs/2210.14422

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