Piotr Malicki, José A. de la Peña, Andrzej Skowroński
Published 2013-02-11Version 1
We prove that the number of terms in the middle of an almost split sequence in the module category of a cycle-finite artin algebra is bounded by 5.
Journal: Central European Journal of Mathematics 12 (2014), no. 1, 39--45
Finiteness and purity of subcategories of the module categories
Image-extension-closed subcategories of module categories of hereditary algebras
Tensor products of higher almost split sequences
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