Coarsification of hte module isomorphism relation

Peteris Daugulis
Department of Mathematics, Daugavpils University
Parades 1, Daugavpils, Latvia

September 1, 2006

Abstract

In this paper new equivalence relations on the category Mod(A) for any associative
algebra A and several related results are given. The new equivalence relations are
defined using restrictions to subalgebras and the action of algebra automorphisms on
modules.

MSV 16G30, 16G60.