reserve a,a1,a2,v,v1,v2,x for object;
reserve V,A for set;
reserve m,n for Nat;
reserve S,S1,S2 for FinSequence;
reserve D,D1,D2 for NonatomicND of V,A;

theorem
  {v,v1} c= V & {a,a1} c= A implies
  ND_ex_3(v,v1,a,a1) is TypeSCNominativeData of V,A by Th52;
