reserve X for set,
        n,m,k for Nat,
        K for Field,
        f for n-element real-valued FinSequence,
        M for Matrix of n,m,F_Real;

theorem Th6:
  0.(TOP-REAL n) = 0.(REAL-NS n)
  proof
    thus 0.(TOP-REAL n)
     = 0.(the RLSStruct of TOP-REAL n)
    .= 0.(the RLSStruct of REAL-NS n) by Th1
    .= 0.(REAL-NS n);
  end;
