theorem
  for V being ComplexLinearSpace, L being C_Linear_Combination of V, v
  being VECTOR of V holds Carrier L = {v} implies Sum L = L.v * v
proof
  let V be ComplexLinearSpace;
  let L be C_Linear_Combination of V;
  let v be VECTOR of V;
  assume Carrier L = {v};
  then L is C_Linear_Combination of {v} by Def4;
  hence thesis by Th14;
end;
