Title of article
On Covers of Acts over Semigroups
Author/Authors
Naghipoor، M. A نويسنده Department of Mathematics, College of Sciences, Shiraz University, P. O. Box 71454, Shiraz, Iran Naghipoor, M. A , Ershad، M نويسنده Department of Mathematics, College of Sciences, Shiraz University, P. O. Box 71454, Shiraz, Iran Ershad, M
Issue Information
دوفصلنامه با شماره پیاپی 0 سال 2014
Pages
5
From page
117
To page
121
Abstract
Let S be a monoid and X a class of S-acts which is closed under coproducts. The object of this article is to find
conditions under which all S-acts have X-precovering. We have shown that the existence of torsion-free
precovering implies the existence of torsion-free covering. This work is an attempt to further facilitate the study of
the conjecture that all S-acts have flat cover.
Journal title
Iranian Journal of Science and Technology Transaction A: Science
Serial Year
2014
Journal title
Iranian Journal of Science and Technology Transaction A: Science
Record number
1502645
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