fact: Definition LIP_app : LIP -> LIP -> LIP := fix f l1 := match l1 with | lnil => fun l2 => l2 | lcons ip l1 => fun l2 => lcons ip (f l1 l2) end.
imports: Coq.Strings.String Mtac2(List Base) Mtac2.tactics(TacticsBase Tactics ImportedTactics)