1. Guest Editors’ Foreword

   • Peter Gritzmann
   • Bernd Sturmfels
   • Günter M. Ziegler

   OriginalPaper Open access 07 May 2009 Pages: 131 - 131

2. The Odd-Distance Plane Graph

   • Hayri Ardal
   • Ján Maňuch
   • Ladislav Stacho

   OriginalPaper 12 May 2009 Pages: 132 - 141

3. Very Colorful Theorems

   • Jorge L. Arocha
   • Imre Bárány
   • Luis Montejano

   OriginalPaper 08 May 2009 Pages: 142 - 154

4. On the Graph Connectivity of Skeleta of Convex Polytopes

   • Christos A. Athanasiadis

   OriginalPaper 12 May 2009 Pages: 155 - 165

5. Three-Dimensional Polyhedra Can Be Described by Three Polynomial Inequalities

   • Gennadiy Averkov
   • Martin Henk

   OriginalPaper 06 May 2009 Pages: 166 - 186

6. Pivoting in Linear Complementarity: Two Polynomial-Time Cases

   • Jan Foniok
   • Komei Fukuda
   • Hans-Jakob Lüthi

   OriginalPaper 12 May 2009 Pages: 187 - 205

7. Finite Sets as Complements of Finite Unions of Convex Sets

   • Jim Lawrence
   • Walter Morris

   OriginalPaper 07 May 2009 Pages: 206 - 218

8. Blocking Visibility for Points in General Position

   • Jiří Matoušek

   OriginalPaper 02 May 2009 Pages: 219 - 223

9. Regular Apeirotopes of Dimension and Rank 4

   • Peter McMullen

   OriginalPaper 20 May 2009 Pages: 224 - 260

10. Applications of Klee’s Dehn–Sommerville Relations

    • Isabella Novik
    • Ed Swartz

    OriginalPaper 08 May 2009 Pages: 261 - 276

11. A Jordan–Brouwer Separation Theorem for Polyhedral Pseudomanifolds

    • Micha A. Perles
    • Horst Martini
    • Yaakov S. Kupitz

    OriginalPaper 16 May 2009 Pages: 277 - 304

12. Diagrams, Tensors and Geometric Reasoning

    • Jürgen Richter-Gebert
    • Peter Lebmeir

    OriginalPaper 16 May 2009 Pages: 305 - 334

13. Simultaneous Packing and Covering in Sequence Spaces

    • Konrad J. Swanepoel

    OriginalPaper 07 May 2009 Pages: 335 - 340