theorem quadratic_channel_present {ρ : ℝ} (hJ : 2 ≤ J) (hρ : ρ < 1) : 0 < curvatureK J ρ := curvatureK_pos hJ hρ
thesis/CESProofs/CurvatureRoles/CorrelationRobust.lean:96
Correlation robustness of CES (Paper 1, Section 7):