`BookProof.LorentzOrthochronous.lorentz_time_sq_ge_one` {l : Matrix (Fin 4) (Fin 4) ℝ} (h : IsLorentz l) : 1 ≤ (l 0 0) ^ 2

Initializing...

`BookProof.LorentzOrthochronous.lorentz_time_sq_ge_one` {l : Matrix (Fin 4) (Fin 4) ℝ} (h : IsLorentz l) : 1 ≤ (l 0 0) ^ 2 · Prove2Me