fact: Definition repInvAbsR (r_o r_n : rep) := r_o = r_n /\ repInv r_n.
imports: Fiat.Common Fiat.Computation Coq.Sets.Ensembles Fiat.ADT.ADTSig Fiat.ADT.Core Fiat.ADTRefinement.Core Fiat.ADTRefinement.SetoidMorphisms Fiat.ADTRefinement.GeneralRefinements