Article ID Journal Published Year Pages File Type
4595698 Journal of Pure and Applied Algebra 2017 21 Pages PDF
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 give in [6] a criterion for when the tensor product of an n-representation finite algebra and an m  -representation finite algebra is (n+m)(n+m)-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.

Related Topics
Physical Sciences and Engineering Mathematics Algebra and Number Theory
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