Issue Information
روزنامه با شماره پیاپی سال 1997
Pages
25
From page
388
To page
412
Abstract
We prove a Maschke type theorem for Doi–Hopf modules. A sufficient condition in order to have a Maschke type property is that there exists a normalized integral map for the Doi–Hopf datum in question. The results are applied to graded modules and to Yetter–Drinfelʹd modules. As another application, a characterization of cosemisimple coalgebras over a field is given.
Journal title
Journal of Algebra
Serial Year
1997
Journal title
Journal of Algebra
Record number
700331
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