Further remarks on group-2-groupoids

Sedat Temel


The aim of this paper is to obtain a group-2-groupoid as a 2-groupoid object in the category of groups and also as a special kind of an internal category in the category of group-groupoids. Corresponding group-2-groupoids, we obtain some categorical structures related to crossed modules and group-groupoids and prove categorical equivalences between them. These results enable us to obtain 2-dimensional notions of group-groupoids.


crossed module; group-groupoid; 2-groupoid

Subject classification

20L05; 18D05; 18D35; 20J15

Full Text:



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