1. Das kinematische Bild einer Regelfläche des einfach isotropen Raumes

   • Randolf Arnold

   OriginalPaper Pages: 1 - 11

2. On strict strong constructibility with a compass alone

   • Arnon Avron

   OriginalPaper Pages: 12 - 15

3. Quadrics of finite type

   • Bang-Yen Chen
   • Franki Dillen

   OriginalPaper Pages: 16 - 22

4. The discrete version of a geometric duality theorem

   • Partha Pratim Das

   OriginalPaper Pages: 23 - 38

5. Hexagonal-surface-webs formed by n-pencils of spheres belonging to the same bundle

   • Hakki İsmail Erdogan

   OriginalPaper Pages: 39 - 41

6. Degenerate conics revisited

   • Hans Havlicek

   OriginalPaper Pages: 42 - 51

7. A generalization of the circumcircle theorem

   • Janet A. Hoskins
   • William D. Hoskins
   • Ralph G. Stanton

   OriginalPaper Pages: 52 - 58

8. Anordnungsräume unter der Moulton Konstruktion und Ebenen der Lenz Klasse III

   • Franz Kalhoff

   OriginalPaper Pages: 59 - 77

9. Hjelmslevgruppen mit Nachbarhomomorphismus

   • Wolfgang Nolte

   OriginalPaper Pages: 78 - 94

10. Ovoids ofPG(3, 16) are elliptic quadrics

    • Christine M. O'Keefe
    • Tim Penttila

    OriginalPaper Pages: 95 - 106

11. Flat projective planes with 2-dimensional collineation group fixing at least two lines and more than two points

    • Hans-Joachim Pohl

    OriginalPaper Pages: 107 - 157

12. On some extensions of generalized quadrangles of grid type

    • Silvana Rinauro

    OriginalPaper Pages: 158 - 164

13. Hyperoskulierende logarithmische Spiralen in affinen CK-Ebenen

    • Otto Röschel

    OriginalPaper Pages: 165 - 170

14. Anordnungen und Halbordnungen in einer Klasse planarer Doppelloops

    • Helga Tecklenburg

    OriginalPaper Pages: 171 - 181

15. On the geometry of the nets in the n-dimensional space of Weyl

    • Bistra Tsareva
    • Georgi Zlatanov

    OriginalPaper Pages: 182 - 197

16. Arcs in projective planes over prime fields

    • José Felipe Voloch

    OriginalPaper Pages: 198 - 200