theorem fisherInfoRho_eq_escortVariance (x : Fin J → ℝ) (ρ : ℝ) : fisherInfoRho x ρ = escortVariance x ρ (fun j => Real.log (x j)) := rfl
thesis/CESProofs/Foundations/CESEstimation.lean:130
CES Estimation Theory: Connecting Theory to Data