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A new invariant of stable equivalences of Morita type


Author: Zygmunt Pogorzaly
Journal: Proc. Amer. Math. Soc. 131 (2003), 343-349
MSC (2000): Primary 16D50; Secondary 16G20
DOI: https://doi.org/10.1090/S0002-9939-02-06553-X
Published electronically: June 5, 2002
MathSciNet review: 1933322
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Abstract: It was proved in an earlier paper by the author that the Hochschild cohomology algebras of self-injective algebras are invariant under stable equivalences of Morita type. In this note we show that the orbit algebra of a self-injective algebra $A$ (considered as an $A$-$A$-bimodule) is also invariant under stable equivalences of Morita type, where the orbit algebra is the algebra of all stable $A$-$A$-bimodule morphisms from the non-negative Auslander-Reiten translations of $A$ to $A$.


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Additional Information

Zygmunt Pogorzaly
Affiliation: Faculty of Mathematics and Computer Science, Nicholas Copernicus University, Chopina 12/18, 87-100 Toruń, Poland
Email: zypo@mat.uni.torun.pl

DOI: https://doi.org/10.1090/S0002-9939-02-06553-X
Received by editor(s): May 2, 2001
Received by editor(s) in revised form: September 6, 2001
Published electronically: June 5, 2002
Dedicated: Dedicated to Professor Idun Reiten on the occasion of her sixtieth birthday
Communicated by: Martin Lorenz
Article copyright: © Copyright 2002 American Mathematical Society

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