`BookProof.ChapterRieszFischer.core_proper_and_dense` : Dense FinSupport ∧ FinSupport ≠ (Set.univ : Set Ell2)

Proved

BookProof.ChapterRieszFischer.core_proper_and_dense

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

theoremstimepiece

Prove the following Lean 4 theorem from ChapterRieszFischer.

BookProof.ChapterRieszFischer.core_proper_and_dense : Dense FinSupport ∧ FinSupport ≠ (Set.univ : Set Ell2)

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

Preamble

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


open Filter
open scoped ENNReal

Formal statement

theorem BookProof.ChapterRieszFischer.core_proper_and_dense :
    Dense FinSupport ∧ FinSupport ≠ (Set.univ : Set Ell2) := by sorry

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