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Projectivity and flatness over the graded ring of semi-coinvariants

Let \(k\) be a field, \(C\) a bialgebra with bijective antipode, \(A\) a right \(C\)-comodule algebra, \(G\) any subgroup of the monoid of grouplike elements of \(C\). We give necessary and sufficient conditions for the projectivity and flatness over the graded ring of semi-coinvariants of \(A\). Wh...

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Bibliographic Details
Date:	2018
Main Author:	Guedenon, T.
Format:	Article
Language:	English
Published:	Lugansk National Taras Shevchenko University 2018
Subjects:
Online Access:	https://admjournal.luguniv.edu.ua/index.php/adm/article/view/640
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Journal Title:	Algebra and Discrete Mathematics

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Algebra and Discrete Mathematics

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