1. Generalized Boolean Algebras in Lattice-Ordered Groups

   • Paul F. Conrad
   • Michael R. Darnel

   OriginalPaper Pages: 295 - 319

2. Games of Chains and Cutsets in the Boolean Lattice

   • Rebecca Gutterman
   • Shahriar Shahriari

   OriginalPaper Pages: 321 - 325

3. The Complexity of Upward Drawings on Spheres

   • S. Mehdi Hashemi
   • Ivan Rival
   • Andrzej Kisielewicz

   OriginalPaper Pages: 327 - 363

4. Invariant Functions on Simple Orders

   • Sergei Ovchinnikov

   OriginalPaper Pages: 365 - 371

5. Using an Eraser or a Pencil for Two-Processor Scheduling

   • Bernard Roux

   OriginalPaper Pages: 373 - 383