
theorem
for L being unital non degenerated doubleLoopStr
for a being Element of L
for n being non zero Nat
holds X^(n,a).0 = -a & X^(n,a).n = 1.L &
      for m being Nat st m <> 0 & m <> n holds X^(n,a).m = 0.L
by Lm10,Lm11;
