fact: Definition Let_InAx : forall {A P} (x : A) (f : forall a : A, P a), P x := @Let_In.
imports: Coq.micromega.Lia Coq.ZArith.ZArith Coq.QArith.QArith Coq.Classes.Morphisms Coq.Setoids.Setoid Coq.Lists.List PerformanceExperiments.Harness PerformanceExperiments.LetIn PerformanceExperiments.ListRectInstances