fact: Definition zero_limit_succ_dec : forall alpha, nf alpha -> ({alpha = zero} + {T1limit alpha }) + {beta : T1 | nf beta /\ alpha = succ beta} .
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)