def policyResponse (J : ℕ) (ρ T_new T_old Tstar : ℝ) : ℝ := effectiveCurvatureKeff J ρ T_new Tstar - effectiveCurvatureKeff J ρ T_old Tstar
thesis/CESProofs/Hierarchy/MonetaryPolicy.lean:35
Monetary Policy and the Liquidity Trap