`BookProof.ChapterLorentzRealRepFull.gram_two` : ∀ i j : Fin 2, ((w2 i)ᵀ * w2 j).trace = if i = j then 4 else 0

Initializing...

`BookProof.ChapterLorentzRealRepFull.gram_two` : ∀ i j : Fin 2, ((w2 i)ᵀ * w2 j).trace = if i = j then 4 else 0 · Prove2Me