internal crossed module

Crossed modules of groups, differential crossed modules, and crossed modules of crossed modules, are a special case of an (internal) crossed module in a semi-abelian category which is along with precrossed modules introduced in

- G. Janelidze,
*Internal crossed modules*, Georgian Math. J. 10 (2003) 99114 (journal).

In Mal’cev categories there is an article on precrossed modules

- T. Everaerta, M. Gran,
*Precrossed modules and Galois theory*, J. Algebra**297**, no. 1 (2006) 292–309 doi:10.1016/j.jalgebra.2005.06.034.

Created on September 28, 2009 at 18:52:41. See the history of this page for a list of all contributions to it.