fact: Fixpoint succ (a: T1) : T1 := match a with | zero => T1nat 1 | cons zero n _ => cons zero (S n) zero | cons b n c => cons b n (succ c) end.
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)