CcGroup(N,f):: GOuterGroup, StandardCocycle --> CcGroup

Inputs a G-outer group N with nonabelian cocycle describing some extension N \rightarrowtail E \twoheadrightarrow G together with standard 2-cocycle f\colon G \times G \rightarrow A where A=Z(N). It returns the extension group determined by the cocycle f. The group is returned as a cocyclic group.

This function is part of the HAPcocyclic package of functions implemented by Robert F. Morse.