Wild blocks of type $A$ Hecke algebras are strictly wild
Representation Theory
2025-05-12 v3 Rings and Algebras
Abstract
We prove that all wild blocks of type Hecke algebras with quantum characteristic -- i.e. blocks of weight at least -- are strictly wild, with the possible exception of the weight Rouquier block for . As a corollary, we show that for , all wild blocks of the -Schur algebras are strictly wild, without exception.
Cite
@article{arxiv.2408.16477,
title = {Wild blocks of type $A$ Hecke algebras are strictly wild},
author = {Liron Speyer},
journal= {arXiv preprint arXiv:2408.16477},
year = {2025}
}
Comments
23 pages, comments welcome. v2 includes an analogous result for q-Schur algebras. v3 includes some fixes of small typos, and some other minor improvements. This is the final version, to appear in the Bulletin of the London Mathematical Society, with some extra detail in the arXiv version