fact: Definition StepF_eq {X : RSetoid} (f g:StepF X):Prop:= (StepFfoldProp (st_eqS ^@> f <@> g)).
imports: CoRN.algebra.RSetoid CoRN.metric2.StepFunction CoRN.model.structures.OpenUnit CoRN.tactics.CornTac CoRN.tactics.Qauto CoRN.model.ordfields.Qordfield CoRN.algebra.COrdFields