Def groupCohomology.twoCochainsLequiv

Modification history

2023-11-08 04:41
Mathlib/RepresentationTheory/GroupCohomology/LowDegree.lean
feat(RepresentationTheory/GroupCohomology/LowDegree): `H¹(G, A) ≃ Hom(G, A)` for a trivial representation (#7988)
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