theorem fisherInfoRho_zero_at_symmetry [NeZero J] {c : ℝ} (hc : 0 < c) (ρ : ℝ) : fisherInfoRho (fun _ : Fin J => c) ρ = 0 := escort_fisher_zero_at_symmetry hc ρ
thesis/CESProofs/Foundations/CESEstimation.lean:143
CES Estimation Theory: Connecting Theory to Data