reserve n   for Nat,
        r,s for Real,
        x,y for Element of REAL n,
        p,q for Point of TOP-REAL n,
        e   for Point of Euclid n;

theorem Th9:
  for D being non empty set, x being Tuple of n, D holds x in Funcs(Seg n,D)
  proof
    let D be non empty set, x be Tuple of n,D;
    x in n-tuples_on D by FINSEQ_2:131;
    hence thesis by FINSEQ_2:93;
  end;
