Displaying similar documents to “A note on Hacque's cohomology of rings-groups and extensions of rings-groups by groups.”

Realization of long exact sequences of abelian groups.

Irwin S. Pressman (1990)

Publicacions Matemàtiques

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Given a long exact sequence of abelian groups L: ... → Li-1ξi-1 Liξi Li+1 → ... a short exact sequence of complexes of free abelian groups is constructed whose cohomology long exact sequence is precisely L. In this sense, L is realized. Two techniques which are introduced...