`BookProof.ChapterA3.toC_det` (M : Matrix (Fin 4) (Fin 4) ℝ) : (toC M).det = (M.det : ℂ)

Initializing...

`BookProof.ChapterA3.toC_det` (M : Matrix (Fin 4) (Fin 4) ℝ) : (toC M).det = (M.det : ℂ) · Prove2Me