theorem higher_tax_wider_discount {D₀ δ_gap τ₁ τ₂ : ℝ} (hδ : 0 < δ_gap) (hτ : τ₁ < τ₂) : discountGap D₀ δ_gap τ₁ < discountGap D₀ δ_gap τ₂ := discountGap_increasing hδ hτ
thesis/CESProofs/Macro/GrowthTax.lean:430
Growth and Dynamic Tax Revenue (Layer 4-5 of Macro Extension)