1. On (k, n)-blocking sets which can be obtained as a union of conics

   • Emanuela Ughi

   OriginalPaper 01 June 1988 Pages: 241 - 245

2. Timelike isometries and killing fields

   • John K. Beem
   • Paul E. Ehrlich
   • Steen Markvorsen

   OriginalPaper 01 June 1988 Pages: 247 - 258

3. Die Stellentopologie projektiver Ebenen und Lenz-topologische Ebenen

   • Peter Hartmann

   OriginalPaper 01 June 1988 Pages: 259 - 272

4. On a set of lines of PG(3, q) corresponding to a maximal cap contained in the Klein quadric of PG (5, q)

   • David G. Glynn

   OriginalPaper 01 June 1988 Pages: 273 - 280

5. Minimal regular polygons serving as universal covers in R ²

   • Don Chakerian
   • Dave Logothetti

   OriginalPaper 01 June 1988 Pages: 281 - 297

6. Infinite series of combinatorially regular polyhedra in three-space

   • P. McMullen
   • E. Schulte
   • J. M. Wills

   OriginalPaper 01 June 1988 Pages: 299 - 307

7. Sharply 1-transitive subsets of certain permutation groups

   • Arrigo Bonisoli
   • Carla Fiori

   OriginalPaper 01 June 1988 Pages: 309 - 314

8. Algebre de lie attachee a la structure presque tangente d'ordre 2

   • Tong-Van-Duc

   OriginalPaper 01 June 1988 Pages: 315 - 321

9. Bijections of #x211D; ⁿ onto itself

   • R. J. Gardner
   • R. Daniel Mauldin

   OriginalPaper 01 June 1988 Pages: 323 - 332

10. An improved bound for the embedding of linear spaces into projective planes

    • Klaus Metsch

    OriginalPaper 01 June 1988 Pages: 333 - 340

11. Isoperimetric inequalities, isometric actions and the higher Newman numbers

    • Hsu-Tung Ku
    • Mei-Chin Ku
    • L. N. Mann

    OriginalPaper 01 June 1988 Pages: 341 - 359

12. A quick geometrical proof that G₂ (K) is maximal in PΘ₇ (K)

    • R. H. Dye

    OriginalPaper 01 June 1988 Pages: 361 - 364