1. A Characterisation of Posets that Are nearly Antichains

   • Siaw-Lynn Ng

   OriginalPaper Pages: 1 - 5

2. On Operations and Linear Extensions of Well Partially Ordered Sets

   • Maciej Malicki
   • Aleksander Rutkowski

   OriginalPaper Pages: 7 - 17

3. Explicit 2-Factorisations of the Odd Graph

   • J. Robert Johnson
   • H. A. Kierstead

   OriginalPaper Pages: 19 - 27

4. Representable Lexicographic Products

   • Alfio Giarlotta

   OriginalPaper Pages: 29 - 41

5. Closure Operators and Lattice Extensions

   • J. B. Nation

   OriginalPaper Pages: 43 - 48

6. Characterizations of Standard Elements in Posets

   • B. N. Waphare
   • Vinayak Joshi

   OriginalPaper Pages: 49 - 60

7. The Biorder Polytope

   • Julie Christophe
   • Jean-Paul Doignon
   • Samuel Fiorini

   OriginalPaper Pages: 61 - 82

8. The Number of Hierarchical Orderings

   • N. J. A. Sloane
   • Thomas Wieder

   OriginalPaper Pages: 83 - 89