theorem lower_rho_more_averse {ρ₁ ρ₂ : ℝ} (h : ρ₁ < ρ₂) : inequalityAversion ρ₂ < inequalityAversion ρ₁ := by simp only [inequalityAversion]; linarith
thesis/CESProofs/Applications/SocialWelfare.lean:78
CES as Atkinson Social Welfare Function