1. Preface

   EditorialNotes Pages: 7 - 7

2. A Life's Work in Geometry: An Homage to Hanfried Lenz

   • Dieter Jungnickel
   • Günter Pickert

   OriginalPaper Pages: 9 - 22

3. A life's work in geometry: An homage to Hanfried Lenz

   OriginalPaper Pages: 9 - 22

4. Impossibility of a Certain Cyclotomic Equation with Applicationsto Difference Sets

   • K. T. Arasu
   • Alexander Pott

   OriginalPaper Pages: 23 - 27

5. Impossibility of a certain cyclotomic equation with applications to difference sets

   • K. T. Arasu
   • Alexander Pott

   OriginalPaper Pages: 23 - 27

6. On the Binary Codes of Steiner Triple Systems

   • Alphonse Baartmans
   • Ivan Landjev
   • Vladimir D. Tonchev

   OriginalPaper Pages: 29 - 43

7. On the binary codes of Steiner triple systems

   • Alphonse Baartmans
   • Ivan Landjev
   • Vladimir D. Tonchev

   OriginalPaper Pages: 29 - 43

8. Orthogonal Partitions in Designed Experiments

   • R.A. Bailey

   OriginalPaper Pages: 45 - 77

9. Orthogonal partitions in designed experiments

   • R. A. Bailey

   OriginalPaper Pages: 45 - 77

10. Regulus-free Spreads of PG(3,q)

    • R. D. Baker
    • G. L. Ebert

    OriginalPaper Pages: 79 - 89

11. Regulus-free spreads ofPG (3,q)

    • R. D. Baker
    • G. L. Ebert

    OriginalPaper Pages: 79 - 89

12. Designs, Codes and Crypts—A Puzzle Altogether

    • Thomas Beth

    OriginalPaper Pages: 91 - 101

13. Designs, codes and crypts—A puzzle altogether

    OriginalPaper Pages: 91 - 101

14. 5-Cycle Systems with Holes

    • Darryn E. Bryant
    • D. G. Hoffman
    • C. A. Rodger

    OriginalPaper Pages: 103 - 108

15. 5-Cycle systems with holes

    • Darryn E. Bryant
    • D. G. Hoffman
    • C. A. Rodger

    OriginalPaper Pages: 103 - 108

16. Stories about Groups and Sequences

    • Peter J. Cameron

    OriginalPaper Pages: 109 - 133

17. Stories about groups and sequences

    • Peter J. Cameron

    OriginalPaper Pages: 109 - 133

18. Groups Admitting a Kantor Family and a Factorized NormalSubgroup

    • Dirk Hachenberger

    OriginalPaper Pages: 135 - 143

19. Groups admitting a Kantor family and a factorized normal subgroup

    • Dirk Hachenberger

    OriginalPaper Pages: 135 - 143

20. Spreads in Strongly Regular Graphs

    • Willem H. Haemers
    • Vladimir D. Tonchev

    OriginalPaper Pages: 145 - 157

21. Spreads in strongly regular graphs

    • Willem H. Haemers
    • Vladimir D. Tonchev

    OriginalPaper Pages: 145 - 157

22. Codes Based on Complete Graphs

    • Dieter Jungnickel
    • Marialuisa J. de Resmini
    • Scott A. Vanstone

    OriginalPaper Pages: 159 - 165

23. Codes based on complete graphs

    • Dieter Jungnickel
    • Marialuisa J. De Resmini
    • Scott A. Vanstone

    OriginalPaper Pages: 159 - 165

24. A Construction of Partial Difference Sets in \({\mathbb{Z}}_{p^{2 \times } } {\mathbb{Z}}_{p^{2 \times \cdot \cdot \cdot \times } } {\mathbb{Z}}_{p^2 } \)

    • Ka Hin Leung
    • Siu Lun Ma

    OriginalPaper Pages: 167 - 172

25. A construction of partial difference sets in ℤ_p ² × ℤ_p ² × ⋯ ℤ_p ²

    • Ka Hin Leung
    • Siu Lun Ma

    OriginalPaper Pages: 167 - 172

26. On the Characterisation of AG(n, q) by its Parameters asa Nearly Triply Regular Design

    • Arlene A. Pascasio
    • Cheryl E. Praeger
    • Blessilda P. Raposa

    OriginalPaper Pages: 173 - 179

27. On the characterisation of AG(n, q) by its parameters as a nearly triply regular design

    • Arlene A. Pascasio
    • Cheryl E. Praeger
    • Blessilda P. Raposa

    OriginalPaper Pages: 173 - 179

28. The Fundamental Theorem of q-Clan Geometry

    • S. E. Payne

    OriginalPaper Pages: 181 - 202

29. The fundamental theorem ofq-clan geometry

    • S. E. Payne

    OriginalPaper Pages: 181 - 202

30. Extension of Gravity Centers Configuration to Steiner TripleSystems

    • Günter Pickert

    OriginalPaper Pages: 203 - 214

31. Extension of gravity centers configuration to Steiner triple systems

    • Günter Pickert

    OriginalPaper Pages: 203 - 214

32. Constructions of Partial Difference Sets and Relative DifferenceSets Using Galois Rings

    • D. K. Ray-Chaudhuri
    • Qing Xiang

    OriginalPaper Pages: 215 - 227

33. Constructions of partial difference sets and relative difference sets using Galois rings

    • D. K. Ray-Chaudhuri
    • Qing Xiang

    OriginalPaper Pages: 215 - 227

34. m-Systems and Partial m-Systemsof Polar Spaces

    • E. E. Shult
    • J. A. Thas

    OriginalPaper Pages: 229 - 238

35. m-Systems and partialm-systems of polar spaces

    • E. E. Shult
    • J. A. Thas

    OriginalPaper Pages: 229 - 238

36. Piotrowski's Infinite Series of Steiner Quadruple SystemsRevisited

    • Helmut Siemon

    OriginalPaper Pages: 239 - 254

37. Piotrowski's infinite series of Steiner Quadruple Systems revisited

    • Helmut Siemon

    OriginalPaper Pages: 239 - 254