Classifying Nakayama algebras with a braid group action on $\tau$-exceptional sequences
Representation Theory
2026-01-07 v2
Abstract
We characterise those basic and connected Nakayama algebras for which the mutation of -exceptional sequences respects the braid group relations. We show that this is the case if and only if is hereditary or all indecomposable projective -modules have length at least .
Keywords
Cite
@article{arxiv.2507.07608,
title = {Classifying Nakayama algebras with a braid group action on $\tau$-exceptional sequences},
author = {Maximilian Kaipel and Håvard Utne Terland},
journal= {arXiv preprint arXiv:2507.07608},
year = {2026}
}
Comments
24 pages, 1 figure, comments are welcome! v2: Added Sections 5 and 6 to complete the classification, Maximilian Kaipel added as author