Geodesic
Computing second cohomology of finite groups with trivial coefficients
Homology, homotopy, and applications, Tome 1 (1999) no. 1, pp. 163-168.

Voir la notice de l'article provenant de la source International Press of Boston

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 Magma implementation of the procedure.
DOI : 10.4310/HHA.1999.v1.n1.a7
Classification : 20J06
Keywords: second cohomology, group extensions, Magma software 
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     author = {Graham Ellis and Irina Kholodna},
     title = {Computing second cohomology of finite groups with trivial coefficients},
     journal = {Homology, homotopy, and applications},
     pages = {163--168},
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     doi = {10.4310/HHA.1999.v1.n1.a7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4310/HHA.1999.v1.n1.a7/}
}
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Graham Ellis; Irina Kholodna. Computing second cohomology of finite groups with trivial coefficients. Homology, homotopy, and applications, Tome 1 (1999) no. 1, pp. 163-168. doi : 10.4310/HHA.1999.v1.n1.a7. http://geodesic.mathdoc.fr/articles/10.4310/HHA.1999.v1.n1.a7/

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