Tensor products of higher almost split sequences
Representation Theory
2019-04-09 v2
Abstract
We investigate how the higher almost split sequences over a tensor product of algebras are related to those over each factor. Herschend and Iyama gave a precise criterion for when the tensor product of an -representation finite algebra and an -representation finite algebra is -representation finite. In this case we give a complete description of the higher almost split sequences over the tensor product by expressing every higher almost split sequence as the mapping cone of a suitable chain map and using a natural notion of tensor product for chain maps.
Keywords
Cite
@article{arxiv.1505.04980,
title = {Tensor products of higher almost split sequences},
author = {Andrea Pasquali},
journal= {arXiv preprint arXiv:1505.04980},
year = {2019}
}
Comments
20 pages