`BookProof.ChapterE4.density_recursion` (θ : ℕ → ℝ) (s d i j : ℕ) : wave θ s (d + 1) i * wave θ s (d + 1) j = Real.cos (θ s) ^ 2 * (basisVec s i * basisVec s j) + Real.sin (θ s) ^

Initializing...

`BookProof.ChapterE4.density_recursion` (θ : ℕ → ℝ) (s d i j : ℕ) : wave θ s (d + 1) i * wave θ s (d + 1) j = Real.cos (θ s) ^ 2 * (basisVec s i * basisVec s j) + Real.sin (θ s) ^ · Prove2Me