Group Extensions of the Co-type of a Crossed Module and Strict Categorical Groups
Category Theory
2015-03-17 v1
Abstract
Prolongations of a group extension can be studied in a more general situation that we call group extensions of the co-type of a crossed module. Cohomology classification of such extensions is obtained by applying the obstruction theory of monoidal functors.
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Cite
@article{arxiv.1503.04379,
title = {Group Extensions of the Co-type of a Crossed Module and Strict Categorical Groups},
author = {Nguyen Tien Quang},
journal= {arXiv preprint arXiv:1503.04379},
year = {2015}
}
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14 pages