theorem liquidity_trap_escape {J : ℕ} (hJ : 2 ≤ J) {ρ : ℝ} (hρ : ρ < 1)
{T Tstar : ℝ} (hTs : 0 < Tstar) (hT_nn : 0 ≤ T) (hT : T < Tstar) :
0 < effectiveCurvatureKeff J ρ T Tstar :=
effectiveCurvatureKeff_pos hJ hρ hT_nn hTs hTMonetary Policy and the Liquidity Trap