Polynomial tensor restrictions and exact coefficient extraction.
theorem
MatrixMultiplicationAllFields.MatrixMultiplication.Foundation.tendsto_affine_mul_geometric_zero
(D C : ℝ)
{q : ℝ}
(hq : 0 ≤ q)
(hq_one : q < 1)
:
Filter.Tendsto (fun (n : ℕ) => (D * ↑n + C) * q ^ n) Filter.atTop (nhds 0)