Wydział Matematyki i Informatyki / Faculty of Mathematics and Computer Science Przeglądanie wg słów kluczowych "almost split sequence"

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On the number of terms in the middle of almost split sequences over cycle-finite artin algebras

Malicki, Piotr; Skowroński, Andrzej; Pena, Jose Antonio (Versita, 2014)

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.