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Singular Hecke categories and thick KLR diagrammatics

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  • UserAmit Hazri, University of Leeds
  • ClockWednesday 11 March 2026, 16:30-17:30
  • HouseMR12.

If you have a question about this talk, please contact Adam Jones .

Hecke categories have been the driving force for understanding of how (p-)Kazhdan–Lusztig theory controls representation theory. As one would expect, singular Hecke categories (should) extend this picture to more singular settings (e.g. singular blocks of algebraic groups). In this talk we construct an explicit diagrammatic isomorphism between a two-colour singular Hecke category and the rational quiver Temperley-Lieb algebra, an extension of the usual KLR algebra with “thick strands”. This is based on joint work with Chris Bowman, Maud De Visscher, and Catharina Stroppel.

This talk is part of the Algebra and Representation Theory Seminar series.

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