theorem cramerRao_diverges_at_symmetry [NeZero J]
{c : ℝ} (hc : 0 < c) (ρ : ℝ) (N : ℕ) (_hN : 0 < N) :
cramerRaoBound N (fun _ : Fin J => c) ρ =
1 / (↑N * 0) := by
simp only [cramerRaoBound, fisherInfoRho,
escort_fisher_zero_at_symmetry hc]CES Estimation Theory: Connecting Theory to Data