
theorem Th69:
  for a being Ordinal, n being non zero Nat
  holds CantorNF(n *^ exp(omega,a)) = <% n *^ exp(omega,a) %>
proof
  let a be Ordinal, n be non zero Nat;
  Sum^ <% n *^ exp(omega,a) %> = n *^ exp(omega,a) by ORDINAL5:53;
  hence thesis;
end;
