Group-groupoid actions and liftings of crossed modules

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MUCUK O. , Sahan T.

GEORGIAN MATHEMATICAL JOURNAL, cilt.26, ss.437-447, 2019 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 26 Konu: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1515/gmj-2018-0001
  • Sayfa Sayıları: ss.437-447


The aim of this paper is to define the notion of lifting via a group morphism for a crossed module and give some properties of this type of liftings. Further, we obtain a criterion for a crossed module to have a lifting crossed module. We also prove that the category of the lifting crossed modules of a certain crossed module is equivalent to the category of group-groupoid actions on groups, where the group-groupoid corresponds to the crossed module.