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On countably Sigma-CS modules
Conference proceeding   Peer reviewed

On countably Sigma-CS modules

Adel N. Alahmadi, Husain S. Al-Hazmi and Pedro A. Guil Asensio
Algebra and its Applications, Vol.419, pp.1-6
CONTEMPORARY MATHEMATICS SERIES
01/01/2006

Abstract

Mathematics Physical Sciences Science & Technology
We study a criterion for a uniform countably Sigma-CS module to be (Sigma-)quasi-injective. As a consequence, we get necessary and sufficient conditions that force a direct sum of indecomposable modules to be Sigma-CS provided that it is countable Sigma-CS.

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