`BookProof.LorentzGroup.isLorentz_mul` {a b : Matrix (Fin 4) (Fin 4) ℝ} (ha : IsLorentz a) (hb : IsLorentz b) : IsLorentz (a * b)

Initializing...

`BookProof.LorentzGroup.isLorentz_mul` {a b : Matrix (Fin 4) (Fin 4) ℝ} (ha : IsLorentz a) (hb : IsLorentz b) : IsLorentz (a * b) · Prove2Me