-- -*- M2-comint -*- {* hash: -130979847 *}

i1 : G = {a,b,c,d,e}; -- the ground set

i2 : R = {(a,b),(b,c),(a,c),(a,d),(d,e)}; --a set of sequences representing relations that "generate" all other relations

i3 : P = poset (G,R) -- the matrix encoding these relations is computed by calling this function

o3 = Poset{cache => CacheTable                                  }
           GroundSet => {a, b, c, d, e}
           RelationMatrix => | 1 1 1 1 1 |
                             | 0 1 1 0 0 |
                             | 0 0 1 0 0 |
                             | 0 0 0 1 1 |
                             | 0 0 0 0 1 |
           Relations => {(a, b), (b, c), (a, c), (a, d), (d, e)}

o3 : Poset

i4 :