proposition: Corollary nf_Wf : well_founded_restriction _ nf lt.
proof: Proof. red; intros; now apply nf_Acc. Qed.
imports: Coq(Arith Max Bool Lia Compare_dec Relations Ensembles Wellfounded Bool RelationClasses Operators_Properties ArithRing Logic.Eqdep_dec) hydras(More_Arith Restriction DecPreOrder) hydras(OrdNotations)