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`BookProof.ChapterSpectralDirectSum.one_lt_dist_of_orthogonalCyclicFamily` {S : Set H} (hS : OrthogonalCyclicFamily T hT S) {x y : H} (hx : x ∈ S) (hy : y ∈ S) (hxy : x ≠ y) : 1 < · Prove2Me