
theorem Th6:
  for I being non degenerated non empty multLoopStr_0 holds Quot.
  I is non empty
proof
  let I be non degenerated non empty multLoopStr_0;
  1.I <> 0.I;
  then reconsider u = [1.I,1.I] as Element of Q.I by Def1;
  QClass.u in Quot.I by Def5;
  hence thesis;
end;
