reserve X for RealUnitarySpace;
reserve x for Point of X;
reserve i, n for Nat;

theorem
  for X st the addF of X is commutative associative & the addF of X is
  having_a_unity for Y be Subset of X st Y is summable_set for L be
linear-Functional of X st L is Lipschitzian holds Y is_summable_set_by L
by Th3,Th7;
