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Computing second cohomology of finite groups with trivial coefficients. (English) Zbl 0998.20044
Summary: The paper describes a simple procedure for computing the second cohomology $$H^2(G,A)$$ of a finite group $$G$$ with coefficients in a finite Abelian group $$A$$. An accompanying text-file contains a Magma implementation of the procedure.

##### MSC:
 20J06 Cohomology of groups 20-04 Software, source code, etc. for problems pertaining to group theory
##### Keywords:
group extensions; Magma software; second cohomology groups
Magma
Full Text: