theorem Th32:
  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;
  assume A1: u in H;
  H left-right-mult-closed (Mlt H) by Def38;
  hence thesis by A1;
end;
