The brick chain complexity of an artin algebra
Representation Theory
2026-06-26 v1
Abstract
We consider the category of finitely generated modules over an artin algebra . It is known that any module has a brick chain filtration. We say that M has brick chain complexity at most provided has a brick chain filtration of length at most . The brick chain complexity of A is by definition the supremum of the brick chain complexity of the indecomposable -modules. The aim of this note is to calculate the brick chain complexity for some algebras. We will exhibit algebras with arbitrarily large brick chain complexity.
Keywords
Cite
@article{arxiv.2606.27879,
title = {The brick chain complexity of an artin algebra},
author = {Claus Michael Ringel},
journal= {arXiv preprint arXiv:2606.27879},
year = {2026}
}
Comments
9 pages