1. Some characterizing properties of the simplex

   • Horst Martini

   OriginalPaper Pages: 1 - 6

2. A structure theory for two-dimensional translation planes of order q ² that admit collineation groups of order q ²

   • Mauro Biliotti
   • Vikram Jha
   • Giampaolo Menichetti

   OriginalPaper Pages: 7 - 43

3. Eine Kennzeichnung der Ähnlichkeiten affiner Räume mit definiter Orthogonalitätsstruktur

   • Heinrich Brauner

   OriginalPaper Pages: 45 - 51

4. A polyhedron of genus 4 with minimal number of vertices and maximal symmetry

   • Jürgen Bokowski
   • Ulrich Brehm

   OriginalPaper Pages: 53 - 64

5. Isometries of bi-invariant pseudo-Riemannian metrics on Lie groups

   • Detlef Müller

   OriginalPaper Pages: 65 - 96

6. Regular embeddings of coloured digraphs

   • Attilia Ceré

   OriginalPaper Pages: 97 - 107

7. Rank-2 vector bundles with many sections and low c ₂ on a surface

   • Edoardo Ballico

   OriginalPaper Pages: 109 - 124