1. A proof for Theodorus' theorem by drawing diagrams

   • Benno Artmann

   OriginalPaper Pages: 3 - 35

2. Transnormal graphs of polynomial curves

   • Ana M. Azevedo Breda
   • Francisco J. Craveiro de Carvalho

   OriginalPaper Pages: 36 - 41

3. Ruled submanifolds with finite type Gauss map

   • Christos Baikoussis

   OriginalPaper Pages: 42 - 45

4. Zum Drehvorgang der Darboux-Achse einer Raumkurve

   • Woldemar Barthel

   OriginalPaper Pages: 46 - 49

5. Bewegungen in der Einsteinschen Zylinderwelt

   • Walter Benz

   OriginalPaper Pages: 50 - 54

6. When is the tangent sphere bundle conformally flat?

   • David E. Blair
   • Themis Koufogiorgos

   OriginalPaper Pages: 55 - 66

7. On the extremality of the polynomials used for obtaining the best known upper bounds for the kissing numbers

   • Peter Boyvalenkov

   OriginalPaper Pages: 67 - 71

8. The geometry of circumscribing polygons of minimal perimeter

   • Duane DeTemple

   OriginalPaper Pages: 72 - 89

9. Every convexn-dimensional body with a smooth belt can be illuminated byn + 1 directions

   • Boris V. Dekster

   OriginalPaper Pages: 90 - 95

10. Determination of the automorphism group of a hyperbolic K-loop

    • Bokhee Im
    • Helmut Karzel

    OriginalPaper Pages: 96 - 105

11. Holomorphically projective transformations on complex Riemannian manifold

    • Stefan Ivanov

    OriginalPaper Pages: 106 - 116

12. Translation planes admitting many homologies

    • Norman L. Johnson
    • Rolando Pomareda

    OriginalPaper Pages: 117 - 149

13. The Fermat-Torricelli point and isosceles tetrahedra

    • Yaakov S. Kupitz
    • Horst Martini

    OriginalPaper Pages: 150 - 162

14. A sphere can be characterized as a smooth ovaloid which contains one circle through each point

    • Koichi Ogiue
    • Nobuko Takeuchi

    OriginalPaper Pages: 163 - 165

15. Real hypersurfaces of quaternionic projective space satisfying\(\nabla _{U_i } A = 0\)

    • Juan de Dios Pérez

    OriginalPaper Pages: 166 - 177

16. Tangent sphere bundles satisfying ∇_ξτ=0

    • Domenico Perrone

    OriginalPaper Pages: 178 - 188

17. Flags in affine planes and maximal spreads in a non-singular quadric of PG(4,q)

    • Sandro Rajola

    OriginalPaper Pages: 189 - 203