S pecial Lattice am dle Given a poset<(,a, b,c, 1, R>described in following fir igure Figure: Complemented LatticeSpecial Lattice . Example . . Given a poset < {0, a, b, c, 1}, R > described in following figure. a b c 1 0 Figure : Complemented Lattice. Yi Li (Fudan University) Discrete Mathematics March 5, 2013 10 / 17