 reserve o,o1,o2 for object;
 reserve n for Ordinal;
 reserve R,L for non degenerated comRing;
 reserve b for bag of 1;

theorem Th9:
   for n being Ordinal holds BagOrder n linearly_orders Bags n
   proof
     let n be Ordinal;
     BagOrder n linearly_orders field BagOrder n by ORDERS_1:37;
     hence BagOrder n linearly_orders Bags n by ORDERS_1:12;
   end;
