1. On the Projective Normality of Smooth Surfaces of Degree Nine

   • Gian Mario Besana
   • Sandra Di Rocco

   OriginalPaper Pages: 1 - 21

2. Isometry Groups of Hyperbolic Three-Manifolds which are Cyclic Branched Coverings

   • Marco Reni
   • Bruno Zimmermann

   OriginalPaper Pages: 23 - 35

3. On Quasi-Polarized Surfaces of General Type Whose Sectional Genus is Equal to the Irregularity

   • Yoshiaki Fukuma

   OriginalPaper Pages: 37 - 47

4. Principal Normal Indicatrices of Closed Space Curves

   • Peter RØgen

   OriginalPaper Pages: 49 - 60

5. Solution of Hadwiger-Levi's Covering Problem for Duals of Cyclic 2k-Polytopes

   • IstvÁn Talata

   OriginalPaper Pages: 61 - 71

6. Ceva-Transitivität

   • Günter Pickert

   OriginalPaper Pages: 73 - 78

7. Locally Lagrange-Symplectic Manifolds

   • Izu Vaisman

   OriginalPaper Pages: 79 - 89

8. On the Size of a Cap in PG(n,q) with q Even and n ≥ 3

   • Jin-Ming Chao

   OriginalPaper Pages: 91 - 94

9. Eigenvalue Comparison Theorems of the Discrete Laplacians for a Graph

   • Hajime Urakawa

   OriginalPaper Pages: 95 - 112