fact: Definition MapsTo_iff1 elt k v (m : t elt) : MapsTo k v m <-> PositiveMap.MapsTo (nonterminal_to_positive k) v m := reflexivity _.
imports: Coq.PArith.BinPos Coq.PArith.Pnat Coq.Arith.Arith Coq.FSets.FMapInterface Coq.FSets.FMapPositive Fiat.Parsers.ContextFreeGrammar.Carriers Fiat.Common.List.ListFacts Fiat.Common.List.ListMorphisms Fiat.Common.Prod