fact: Axiom UnfoldDatagroups_def: forall p h f dgs, LocSet.In f (UnfoldDatagroups p h dgs) <-> exists dg, LocSet.In dg dgs /\ LocSet.In f (UnfoldDatagroup p h dg).
imports: Coq(List) Coq(Relation_Operators) Coq(DecidableType) Coq(FSetInterface)