1. On Study's übertragungsprinzip

   • Walter Benz

   OriginalPaper Pages: 1 - 7

2. Duality in stable planes and related closure and kernel operations

   • Holger Bickel

   OriginalPaper Pages: 8 - 15

3. Bilinear flocks of quadratic cones

   • Mauro Biliotti
   • Norman L. Johnson

   OriginalPaper Pages: 16 - 50

4. Halving PSL(2,q)

   • Jürgen Bierbrauer
   • Yves Edel

   OriginalPaper Pages: 51 - 54

5. On cyclic bra nched coverings of torus knots

   • Alberto Cavicchioli
   • Friedrich Hegenbarth
   • Ann Chi Kim

   OriginalPaper Pages: 55 - 66

6. Embedding the planar structure of 4-dimensional linear spaces into projective spaces

   • Paola De Vito
   • Eva Ferrara Dentice
   • Klaus Metsch

   OriginalPaper Pages: 67 - 79

7. Two classes of conformally flat contact metric 3-manifolds

   • Florence Gouli-Andreou
   • Philippos J. Xenos

   OriginalPaper Pages: 80 - 88

8. Triangles in arrangements of lines

   • Haiwei Gu

   OriginalPaper Pages: 89 - 94

9. A time-like surface in Minkowski 3-space which contains light-like lines

   • Shyuichi Izumiya
   • Akihiro Takiyama

   OriginalPaper Pages: 95 - 101

10. Semiquadratic sets and embedded polar spaces

    • Peter M. Johnson

    OriginalPaper Pages: 102 - 127

11. Some remarks on compact constant mean curvature hypersurfaces in a halfspace of ℍ ⁿ⁺¹

    • Barbara Nelli
    • Beate Semmler

    OriginalPaper Pages: 128 - 140

12. Translation surfaces with constant mean curvature in 3-dimensional spaces

    • Huili Liu

    OriginalPaper Pages: 141 - 149

13. On a characteristic property of minimal-ruled surfaces

    • Abdülkadir özdeğer

    OriginalPaper Pages: 150 - 159

14. Eine Bemerkung über absolute Ebenen

    • Kay Sörensen

    OriginalPaper Pages: 160 - 166

15. Characterization of ordered bilinear contexts

    • Uta Wille

    OriginalPaper Pages: 167 - 207