theorem curvatureK_from_hessLogF {J : ℕ} (ρ c : ℝ)
(hc : c ≠ 0) (hJ : (↑J : ℝ) ≠ 0) :
curvatureK J ρ = -(↑J - 1) * c ^ 2 * hessLogFEigenvalue J ρ c := by
simp only [curvatureK, hessLogFEigenvalue]
field_simp
ringInformation Geometry of CES: