Unipotent character sheaves and strata of a reductive group, II

2022/12/20 by G. Lusztig, Lusztig, G.
Mathematics · #Advanced Algebra and Geometry #Algebraic Geometry and Number Theory #Algebraic structures and combinatorial models #FOS: Mathematics #Representation Theory (math.RT)

paper · pdf · doi:10.48550/arxiv.2212.10412

openalex publication_date 2022/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Let D be a connected component of a reductive group over an algebraically closed field. We define a surjective map from the unipotent character sheaves on D to the set of strata of D, extending an earlier result which applied to connected reductive groups.

Related

• Unipotent character sheaves and strata of a reductive group
• Character sheaves on disconnected groups, X
• Non-unipotent character sheaves as a categorical centre
• Restriction of a character sheaf to conjugacy classes
• Character sheaves and generalizations