`BookProof.ChapterShannonSampling.bandSignal_hasSum_sinc` (F : Lp ℂ 2 (haarAddCircle (T := T))) (x : ℝ) : HasSum (fun n : ℤ => bandSignal (T := T) (F : AddCircle T → ℂ) (n / T) * (

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`BookProof.ChapterShannonSampling.bandSignal_hasSum_sinc` (F : Lp ℂ 2 (haarAddCircle (T := T))) (x : ℝ) : HasSum (fun n : ℤ => bandSignal (T := T) (F : AddCircle T → ℂ) (n / T) * ( · Prove2Me