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Mathlib.RepresentationTheory.Homological.GroupCohomology.LongExactSequence | {
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Mathlib.RepresentationTheory.Homological.GroupCohomology.LongExactSequence | {
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Mathlib.RepresentationTheory.Homological.GroupCohomology.LowDegree | {
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Mathlib.RepresentationTheory.Homological.GroupCohomology.LowDegree | {
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{
"pp": "k G : Type u\ninst✝⁴ : CommRing k\ninst✝³ : CommGroup G\ninst✝² : Fintype G\nA : Rep k G\ng : G\ninst✝¹ : DecidableEq G\nhg : ∀ (x : G), x ∈ Subgroup.zpowers g\ni : ℕ\ninst✝ : NeZero i\nhi : Even i\nx : ↥(LinearMap.ker A.ρ.norm)\n⊢ (ConcreteCategory.hom (groupHomologyπEven A g hg i hi)) x = 0 ↔ ↑x ∈ (H... | [] | by | [anonymous] | by |
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