Authors: Boyu, Li

Citation: Boyu, Li, Finite Antichain Cutsets in Posets, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 7(1), 1991, pp. 51-61

Authors: Boyu, Li

Citation: Boyu, Li, All Retraction Operators on a Complete Lattice Form a Complete Lattice, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 7(3), 1991, pp. 247-251