`BookProof.LorentzOrthochronous.lorentz_time_ne_zero` {l : Matrix (Fin 4) (Fin 4) ℝ} (h : IsLorentz l) : l 0 0 ≠ 0

Initializing...

`BookProof.LorentzOrthochronous.lorentz_time_ne_zero` {l : Matrix (Fin 4) (Fin 4) ℝ} (h : IsLorentz l) : l 0 0 ≠ 0 · Prove2Me