`BookProof.ChapterMackeyImprimitivity.mackeyMap_reconstruct` (ψ : E) : ∑ x : X, S.U (s x) (mackeyMap S s ψ x) = ψ

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`BookProof.ChapterMackeyImprimitivity.mackeyMap_reconstruct` (ψ : E) : ∑ x : X, S.U (s x) (mackeyMap S s ψ x) = ψ · Prove2Me