
theorem
  for T being with_equivalence naturally_generated non empty TopRelStr,
      A being Subset of T holds
    card Kurat14Set A <= 6
  proof
    let T be with_equivalence naturally_generated non empty TopRelStr,
        A be Subset of T;
    Kurat14Set A = { A, UAp A, (UAp A)`, A`, (LAp A)`, LAp A }
      by Fourteen;
    hence thesis by CARD_2:54;
  end;
