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The stable Auslander-Reiten components of certain monomorphism categories. (English) Zbl 07838102

Summary: Let A be an Artin algebra and let \(\operatorname{Gprj}\)-\(\Lambda\) denote the class of all the finitely generated Gorenstein projective \(\Lambda \)-modules. In this paper, we study the components of the stable Auslander-Reiten quiver of a certain subcategory of the monomorphism category \({\mathcal{S}}(\operatorname{Gprj}\)-\(\Lambda)\) containing boundary vertices. We describe the shape of such components. It is shown that certain components are linked to the orbits of an auto-equivalence on the stable category \(\underline{\operatorname{Gprj}}\)-\(\Lambda\). In particular, for the finite components, we show that under certain mild conditions, their cardinalities are divisible by 3. We see that this three-periodicity phenomenon reoccurs several times in the paper.

MSC:

16G20 Representations of quivers and partially ordered sets
16E65 Homological conditions on associative rings (generalizations of regular, Gorenstein, Cohen-Macaulay rings, etc.)
16G70 Auslander-Reiten sequences (almost split sequences) and Auslander-Reiten quivers
16G10 Representations of associative Artinian rings

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