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ON FLATNESS COVERS OF CYCLIC ACTS OVER MONOIDS
Published online by Cambridge University Press: 09 December 2011
Abstract
The covers of cyclic acts over monoids were investigated by Mahmoudi and Renshaw (M. Mahmoudi and J. Renshaw, On covers of cyclic acts over monoids, Semigroup Forum77 (2008), 325–338) and the authors posed some open problems. In the present paper, we give answers to their problems 1 and 5, and we also give a sufficient and necessary condition that a cyclic act has a weakly pullback flat cover.
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- Copyright © Glasgow Mathematical Journal Trust 2011
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