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- W4293344028 abstract "We give an elementary proof of the well-known fact that the third cohomology group H^3(G, M) of a group G with coefficients in an abelian G-module M is in bijection to the set Ext^2(G, M) of equivalence classes of crossed module extensions of G with M." @default.
- W4293344028 created "2022-08-27" @default.
- W4293344028 creator A5037456991 @default.
- W4293344028 date "2009-11-15" @default.
- W4293344028 modified "2023-09-27" @default.
- W4293344028 title "The third cohomology group classifies crossed module extensions" @default.
- W4293344028 doi "https://doi.org/10.48550/arxiv.0911.2861" @default.
- W4293344028 hasPublicationYear "2009" @default.
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