 reserve L for non empty LattStr;
 reserve v100,v102,v2,v1,v0,v3,v101 for Element of L;
 reserve L for WA_Lattice;
 reserve x,y,z,u for Element of L;

theorem Lemacik3:
  x "/\" y [= x
  proof
    (x "/\" y) "\/" x = x by LATTICES:def 8;
    hence thesis by LATTICES:def 3;
  end; :: LATTICES:5 but without associativity
