Generic Hecke algebras in the infinite

Fuente: arXiv
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Main Author: Martello, Davide Dal
Format: Preprint
Published: 2025
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author Martello, Davide Dal
author_facet Martello, Davide Dal
contents Aiming for a revival of the theory of crystallographic complex reflection groups, we compute (minimal) Coxeter-like reflection presentations for the infinite families of those non-genuine groups which satisfy Steinberg's fixed point theorem. These new presentations behave à la Coxeter, encoding many of the group's properties at a glance, and their signature feature -- named the $x$-relation -- is fully understood in terms of configuration spaces. Crucially, the presentations further achieve the braid theorem, allowing to deform into the generic Hecke algebra. In particular, we revisit the affine GDAHA family in deformation terms of the most general class of Steinberg crystallographic complex reflection groups.
format Preprint
id arxiv_https___arxiv_org_abs_2510_08209
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Generic Hecke algebras in the infinite
Martello, Davide Dal
Group Theory
Quantum Algebra
20F55 (Primary), 20F36, 20F05, 20C08 (Secondary)
Aiming for a revival of the theory of crystallographic complex reflection groups, we compute (minimal) Coxeter-like reflection presentations for the infinite families of those non-genuine groups which satisfy Steinberg's fixed point theorem. These new presentations behave à la Coxeter, encoding many of the group's properties at a glance, and their signature feature -- named the $x$-relation -- is fully understood in terms of configuration spaces. Crucially, the presentations further achieve the braid theorem, allowing to deform into the generic Hecke algebra. In particular, we revisit the affine GDAHA family in deformation terms of the most general class of Steinberg crystallographic complex reflection groups.
title Generic Hecke algebras in the infinite
topic Group Theory
Quantum Algebra
20F55 (Primary), 20F36, 20F05, 20C08 (Secondary)
url https://arxiv.org/abs/2510.08209