theorem hessLogF_from_cesEigenvalue (J : ℕ) {ρ c : ℝ}
(hc : c ≠ 0) (hJ : (↑J : ℝ) ≠ 0) :
hessLogFEigenvalue J ρ c = cesEigenvaluePerp J ρ c / c := by
simp only [hessLogFEigenvalue, cesEigenvaluePerp]
field_simp
ringInformation Geometry of CES: