reserve x for set,
  i,j,k,n for Nat,
  K for Field;
reserve a,b,c,d for Element of K;
reserve D for non empty set;

theorem
  for p being odd Permutation of Seg 3 holds p = <*3,2,1*> or p = <*1,3,
  2*> or p = <*2,1,3*>
proof
  let p be odd Permutation of Seg 3;
  p in Permutations 3 by MATRIX_1:def 12;
  hence thesis by Lm12,Lm13,Lm14,Th19,ENUMSET1:def 4;
end;
