`BookProof.ChapterA3.inv_of_sq_neg_one` {S : Matrix (Fin 4) (Fin 4) ℝ} (h : S * S = -1) : S⁻¹ = -S

Initializing...

`BookProof.ChapterA3.inv_of_sq_neg_one` {S : Matrix (Fin 4) (Fin 4) ℝ} (h : S * S = -1) : S⁻¹ = -S · Prove2Me