Group Extensions of the Co-type of a Crossed Module and Strict Categorical Groups

2015/03/15 by Nguyễn Tiến Quang, Nguyen Tien Quang, Quang, Nguyen Tien
Computer Science · Mathematics · #Advanced Algebra and Logic #math.CT #msc:18D10 #msc:20J05 #msc:20J06

paper · pdf · doi:10.48550/arxiv.1503.04379

14 pages

arxiv created 2015/03/15 · arxiv updated 2015/03/17

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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