theorem policyMargin_narrowing {T1 T2 Tstar : ℝ} (h : T1 ≤ T2) : policyMargin T2 Tstar ≤ policyMargin T1 Tstar := by simp only [policyMargin]; linarith
thesis/CESProofs/Hierarchy/MonetaryPolicy.lean:169
Monetary Policy and the Liquidity Trap