1. A Geometric Approach to Acyclic Orientations

   • Richard Ehrenborg
   • MLE Slone

   OriginalPaper 20 August 2009 Pages: 283 - 288

2. The Partial Ordering on the Automorphism Group of the Countable Generic Partial Order

   • David Michael Knipe

   OriginalPaper 24 September 2009 Pages: 289 - 307

3. Sums of Lattices and a Relational Category

   • Gábor Czédli

   OriginalPaper 28 August 2009 Pages: 309 - 318

4. An Explicit Derivation of the Möbius Function for Bruhat Order

   • Brant C. Jones

   OriginalPaper Open access 16 September 2009 Pages: 319 - 330

5. A Poset with Spectral Scott Topology is a Quasialgebraic Domain

   • Tomoo Yokoyama

   OriginalPaper 28 August 2009 Pages: 331 - 335

6. Rough Sets Determined by Quasiorders

   • Jouni Järvinen
   • Sándor Radeleczki
   • Laura Veres

   OriginalPaper 16 September 2009 Pages: 337 - 355

7. On Minimal Prime Graphs and Posets

   • Maurice Pouzet
   • Imed Zaguia

   OriginalPaper 01 October 2009 Pages: 357 - 375

8. Pointwise Debreu Lexicographic Powers

   • Alfio Giarlotta
   • Stephen Watson

   OriginalPaper 29 September 2009 Pages: 377 - 408