theorem
  for f be PartFunc of CNS,RNS st f is_uniformly_continuous_on X holds -
  f is_uniformly_continuous_on X
proof
  let f be PartFunc of CNS,RNS;
A1: -f = (-1)(#)f by VFUNCT_1:23;
  assume f is_uniformly_continuous_on X;
  hence thesis by A1,Th11;
end;
