fact: Definition rec_contractive' A B (E:binary B) (P:A->Prop) (F:(A->B)->(A->B)) (R:binary A) (f:A->B) := forall f' x, P x -> (forall y, P y -> R y x -> E (f y) (f' y)) -> E (F f x) (F f' x).
imports: TLC(LibTactics LibLogic LibReflect LibEpsilon LibInt LibProd LibSum LibOperation LibRelation LibWf LibOrder LibMin)