On the extension-closed property for the subcategory $\text{Tr}(\Omega^2({\rm mod}-A))$
Representation Theory
2021-06-09 v2
Abstract
We present a monomial quiver algebra having the property that the subcategory is not extension-closed. This answers a question raised by Idun Reiten.
Keywords
Cite
@article{arxiv.2105.14911,
title = {On the extension-closed property for the subcategory $\text{Tr}(\Omega^2({\rm mod}-A))$},
author = {Bernhard Böhmler and René Marczinzik},
journal= {arXiv preprint arXiv:2105.14911},
year = {2021}
}