1. Helly-Type Theorems on Common Supporting Lines for Nonoverlapping Families of Convex Bodies in the Plane

   • Sorin Revenko
   • Valeriu Soltan

   OriginalPaper Pages: 225 - 237

2. An Extremal Class of Three-Dimensional Hyperbolic Affine Spheres

   • Marcus Kriele
   • Luc Vrancken

   OriginalPaper Pages: 239 - 252

3. Hamiltonian Systems Derived from Constant Mean Curvature Surfaces in Hyperbolic Three-Space

   • Masatoshi Kokubu

   OriginalPaper Pages: 253 - 269

4. Four-Dimensional Compact Projective Planes with a Solvable Collineation Group

   • Hauke Klein

   OriginalPaper Pages: 271 - 277

5. Fagnano Orbits of Polygonal Dual Billiards

   • Serge Tabachnikov

   OriginalPaper Pages: 279 - 286

6. Notes on Two Geometric Inequalities for a Finite Set of Points

   • Yang Shiguo

   OriginalPaper Pages: 287 - 288

7. On Almost Hermitian 4-manifolds with J-invariant Ricci Tensor

   • Philippos J. Xenos

   OriginalPaper Pages: 289 - 295

8. On the Ricci Curvature of Compact Spacelike Hypersurfaces in de Sitter Space

   • Luis J. Alías

   OriginalPaper Pages: 297 - 304

9. Osculating Hyperplanes and Asymptotic Directions of Codimension Two Submanifolds of Euclidean Spaces

   • D. K. H. Mochida
   • M. C. Romero-Fuster
   • M. A. S. Ruas

   OriginalPaper Pages: 305 - 315

10. Locally Vacant Double Lie Groupoids and the Integration of Matched Pairs of Lie Algebroids

    • K. C. H. Mackenzie
    • T. Mokri

    OriginalPaper Pages: 317 - 330