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

Initializing...

`BookProof.ChapterF8.operatorBasis_card` (m : ℕ) : Fintype.card (Fin m × Fin m) = m * m · Prove2Me