`BookProof.ChapterE4.basisVec_sq` (k i : ℕ) : (basisVec k i) ^ 2 = if i = k then 1 else 0

Initializing...

`BookProof.ChapterE4.basisVec_sq` (k i : ℕ) : (basisVec k i) ^ 2 = if i = k then 1 else 0 · Prove2Me