Title of article
Graded extensions of categories
Author/Authors
A. M. Cegarra، نويسنده , , A. R. Garz?n، نويسنده , , A. R. Grandjean، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
25
From page
117
To page
141
Abstract
The problem of extending categories by groups, including theory of obstructions, is studied by means of factor systems and various homological invariants, generalized from Schreier–Eilenberg–Mac Lane group extension theory. Explicit applications are then given to the classification of several algebraic constructions long known as crossed products, appearing in many different contexts such as monoids, Clifford systems or twisted group rings.
Journal title
Journal of Pure and Applied Algebra
Serial Year
2000
Journal title
Journal of Pure and Applied Algebra
Record number
816711
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