1. Every self-dual ordering has a self-dual linear extension

   • Zhong-Qiang Yang

   OriginalPaper Pages: 97 - 100

2. The fixed point property in ordered sets of width two

   • Tatyana S. Fofanova
   • Aleksander Rutkowski

   OriginalPaper Pages: 101 - 106

3. A note on Dilworth's theorem in the infinite case

   • Uri Abraham

   OriginalPaper Pages: 107 - 125

4. The poset of closures as a model of changing databases

   • G. Burosch
   • J. Demetrovics
   • G. O. H. Katona

   OriginalPaper Pages: 127 - 142

5. NP-completeness properties about linear extensions

   • Vincent Bouchitte
   • Michel Habib

   OriginalPaper Pages: 143 - 154

6. Regressions and monotone chains II: The poset of integer intervals

   • Noga Alon
   • W. T. Trotter
   • Douglas B. West

   OriginalPaper Pages: 155 - 164

7. Measurement structures with archimedean ordered translation groups

   • R. Duncan Luce

   OriginalPaper Pages: 165 - 189

8. Special-valued l-groups and Abelian covers

   • Michael Darnel

   OriginalPaper Pages: 191 - 194

9. Rational preemptive scheduling

   • N. W. Sauer
   • M. G. Stone

   OriginalPaper Pages: 195 - 206

10. Unsolved problems

    BriefCommunication Pages: 207 - 207