Gorenstein triangular matrix rings and category algebras

Published 29 Dec 2014 in math.RT | (1412.8278v1)

Abstract: We give conditions on when a triangular matrix ring is Gorenstein of a given selfinjective dimension. We apply the result to the category algebra of a finite EI category. In particular, we prove that for a finite EI category, its category algebra is 1-Gorenstein if and only if the given category is free and projective.

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Authors (1)

Ren Wang

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