reserve Q,Q1,Q2 for multLoop;
reserve x,y,z,w,u,v for Element of Q;

theorem Th33:
  for H being Subset of Q holds
  for u being Element of Q st u in H holds
    (curry' (the multF of Q)).u in Mlt H
proof
  let H be Subset of Q;
  let u be Element of Q;
  H left-right-mult-closed (Mlt H) by Def38;
  hence thesis;
end;
