Table of contents : Bit-vector encoding for partially ordered sets....Pages 1-12 Intervals and orders: What comes after interval orders?....Pages 13-32 Dimension and algorithms....Pages 33-52 Upward drawings to fit surfaces....Pages 53-58 A cleanup on transitive orientation....Pages 59-85 A characterization of graphs with vertex cover up to five....Pages 86-99 Testing hereditary properties efficiently on average....Pages 100-116 Orders, k -sets and fast halfplane search on paged memory....Pages 117-127 Triangle graphs and their coloring....Pages 128-142 Representation of an order as union of interval orders....Pages 143-161 Minimal representation of semiorders with intervals of same length....Pages 162-175 The computation of the jump number of convex graphs....Pages 176-185 Fast lattice browsing on sparse representation....Pages 186-204