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Title

A duality result for almost split sequences

Authors 1, 1

Affiliations

  1. Mathematisches Institut der Universität, Theresienstraße 39, D-80333 München, Germany

Abstract

Over an artinian hereditary ring R, we discuss how the existence of almost split sequences starting at the indecomposable non-injective preprojective right R-modules is related to the existence of almost split sequences ending at the indecomposable non-projective preinjective left R-modules. This answers a question raised by Simson in [27] in connection with pure semisimple rings.

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Colloquium Mathematicum
1999/80/2
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Pages:
267-292
Main language of publication
English
Received
1998-08-11
Accepted
1998-12-30
Published
1999
Exact and natural sciences