theorem integration_boundary {K_eff T c₀ : ℝ} (_hK : 0 < K_eff) (_hc : 0 < c₀)
(hT : 0 < T) :
-- Integration profitable iff K_eff > c₀ · T
K_eff > c₀ * T ↔ K_eff / T > c₀ := by
rw [gt_iff_lt, gt_iff_lt, lt_div_iff₀ hT]Propositions 12-17 and Corollary 5: