`BookProof.ChapterE3.euler_density_matrix` (l w : Fin n → ℝ) (θ : ℝ) : Matrix.vecMulVec (fun i => Real.cos θ * l i + Real.sin θ * w i) (fun i => Real.cos θ * l i + Real.sin θ * w i

Initializing...

`BookProof.ChapterE3.euler_density_matrix` (l w : Fin n → ℝ) (θ : ℝ) : Matrix.vecMulVec (fun i => Real.cos θ * l i + Real.sin θ * w i) (fun i => Real.cos θ * l i + Real.sin θ * w i · Prove2Me