theorem price_convergence_linear {a δ : ℝ} {J : ℕ}
(hJ : 2 ≤ J) (ha : 0 ≤ a) (hδ : 0 ≤ δ) :
1 - compoundSymmetryCorr (a * δ) J ≤ ↑J * a * δ := by
have h := gap_from_one_le hJ (mul_nonneg ha hδ)
linarith [mul_assoc (↑J : ℝ) a δ]Correlation Convergence at the Regime Boundary