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`BookProof.ChapterObservableOperator.bornProb_sum_one` (b : OrthonormalBasis (Fin m) ℂ (EuclideanSpace ℂ (Fin n))) (q : EuclideanSpace ℂ (Fin n)) (hq : ‖q‖ = 1) : ∑ j, bornProb (fu · Prove2Me