reserve o,m for set;

theorem Th8:
  for a being Object of c1Cat(o,m) holds a is terminal
proof
  let a be Object of c1Cat(o,m);
  let b be Object of c1Cat(o,m);
  set f = the Morphism of b,a;
  thus Hom(b,a)<>{} by Th5;
  take f;
  thus thesis by Th4;
end;
