`BookProof.ChapterAbelianDiagonalCountable.norm_diagOp_le` (d : EllInf) : ‖diagOp d‖ ≤ ‖d‖

Proved

BookProof.ChapterAbelianDiagonalCountable.norm_diagOp_le

by leonardopedro · Oct 7, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterAbelianDiagonalCountable.

BookProof.ChapterAbelianDiagonalCountable.norm_diagOp_le (d : EllInf) : ‖diagOp d‖ ≤ ‖d‖

Formalization note: Lean 4 identifier BookProof.ChapterAbelianDiagonalCountable.norm_diagOp_le.

Preamble

-- Generated from ChapterAbelianDiagonalCountable.lean — theorem BookProof.ChapterAbelianDiagonalCountable.norm_diagOp_le
import Mathlib
import Definitions.Def_ChapterAbelianDiagonalCountable
open BookProof.ChapterAbelianDiagonalCountable


open scoped ENNReal

noncomputable section

Formal statement

theorem BookProof.ChapterAbelianDiagonalCountable.norm_diagOp_le (d : EllInf) : ‖diagOp d‖ ≤ ‖d‖ := by sorry

View graph