theorem friction_increases_with_cost {T₀ f_c₁ f_c₂ : ℝ} (hT₀ : 0 < T₀) (hf : f_c₁ < f_c₂) : T₀ * f_c₁ < T₀ * f_c₂ := mul_lt_mul_of_pos_left hf hT₀
thesis/CESProofs/Hierarchy/EndogenousCrossing.lean:56
Proposition: Endogenous Crossing