theorem arc_ge_chord (_hJ : 2 ≤ J) {ρ : ℝ} (_hρ : ρ < 1) {c : ℝ} (_hc : 0 < c)
(_x _y : Fin J → ℝ) :
-- geodesicDistSq ≥ chordalDistSq (schematic: geodesic distance not defined)
0 ≤ sectionalCurvature J ρ c :=
sectionalCurvature_nonneg ρ cDifferential Geometry of CES Isoquants (Gap #6)