reserve n for non zero Element of NAT;
reserve a,b,r,t for Real;

theorem Th22:
  for X be non empty closed_interval Subset of REAL,
      Y be RealNormSpace holds
    ContinuousFunctions(X,Y)
      is closed Subset of R_NormSpace_of_BoundedFunctions(X,Y)
by Lm5;
