COMPUTING SECOND COHOMOLOGY OF FINITE GROUPS WITH TRIVIAL COEFFICIENTS 

Graham Ellis and Irina Kholodna 

The paper describes a simple procedure for computing the second cohomology 
$H^2(G,A)$ of a finitely presented finite group $G$ with coefficients in a 
finitely presented finite abelian group $A$. An accompanying text-file 
contains a {\scshape Magma} implementation of the procedure.