Some Results on Derivation Groups

Authors: MURAT ALP

Abstract: In this paper we describe a share package XMOD of functions for computing with finite, permutation crossed modules, their morphisms and derivations; cat$^1$-groups, their morphisms and their sections, written using the GAP \cite{GAP} group theory programming language. We also give some mathematical results for derivations. These results are suggested by the output produced by the XMOD package.

Keywords: Crossed modules, derivation, whitehead multiplication.

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