English

(Co)Minuscule Hecke categories

Representation Theory 2024-09-25 v1 Combinatorics

Abstract

We determine the p-Kazhdan-Lusztig bases for antispherical (co)minuscule Hecke categories in all characteristics, and for spherical (co)minuscule Hecke categories in good characteristic. This is achieved using geometric and diagrammatic methods. The 2-Kazhdan-Lusztig bases of antispherical cominuscule Hecke categories exhibit extremely pathological behaviour. The notions of p-small resolutions and p-tight elements are introduced and conjecturally explain this behaviour.

Keywords

Cite

@article{arxiv.2409.16131,
  title  = {(Co)Minuscule Hecke categories},
  author = {Joseph Baine},
  journal= {arXiv preprint arXiv:2409.16131},
  year   = {2024}
}

Comments

45 pages. View in colour

R2 v1 2026-06-28T18:55:23.560Z