Theorem groupCohomology.exists_div_of_norm_eq_one

Modification history

2026-01-05 14:32
Mathlib/RepresentationTheory/Homological/GroupCohomology/Hilbert90.lean
feat(RepresentationTheory/Homological/GroupCohomology/Hilbert90): add Hilbert 90 for cyclic groups (#33124) …
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