`BookProof.ChapterF8.operatorBasis_card` (m : ℕ) : Fintype.card (Fin m × Fin m) = m * m

Proved

BookProof.ChapterF8.operatorBasis_card

by leonardopedro · Oct 8, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterF8.

BookProof.ChapterF8.operatorBasis_card (m : ℕ) : Fintype.card (Fin m × Fin m) = m * m

Formalization note: Lean 4 identifier BookProof.ChapterF8.operatorBasis_card.

Preamble

-- Generated from ChapterF8.lean — theorem BookProof.ChapterF8.operatorBasis_card
import Mathlib
import Definitions.Def_ChapterF8
open BookProof.ChapterF8


noncomputable section

open scoped BigOperators

Formal statement

theorem BookProof.ChapterF8.operatorBasis_card (m : ℕ) : Fintype.card (Fin m × Fin m) = m * m := by sorry

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