`BookProof.ChapterRieszFischer.riesz_fischer_hasSum` (f : Ell2) : HasSum (fun i => lp.single 2 i ((f : ℕ → ℝ) i)) f

Proved

BookProof.ChapterRieszFischer.riesz_fischer_hasSum

by leonardopedro · Oct 10, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterRieszFischer.

BookProof.ChapterRieszFischer.riesz_fischer_hasSum (f : Ell2) : HasSum (fun i => lp.single 2 i ((f : ℕ → ℝ) i)) f

Formalization note: Lean 4 identifier BookProof.ChapterRieszFischer.riesz_fischer_hasSum.

Preamble

-- Generated from ChapterRieszFischer.lean — theorem BookProof.ChapterRieszFischer.riesz_fischer_hasSum
import Mathlib
import Definitions.Def_ChapterRieszFischer
open BookProof.ChapterRieszFischer


open Filter
open scoped ENNReal

Formal statement

theorem BookProof.ChapterRieszFischer.riesz_fischer_hasSum (f : Ell2) :
    HasSum (fun i => lp.single 2 i ((f : ℕ → ℝ) i)) f := by sorry

View graph