1. Dedication to Prof. Dr. Otto H. Kegel

   Dedication Pages: 1 - 2

2. A probabilistic version of a theorem of Kegel

   • John S. Wilson

   Original Paper Pages: 3 - 8

3. A solubility criterion for finite groups

   • Bernhard Amberg
   • Lev Kazarin

   Original Paper Pages: 9 - 14

4. Permutation groups of prime degree, a quick proof of Burnside’s theorem

   • Peter Müller

   Original Paper Pages: 15 - 17

5. Mutually permutable subgroups and group classes

   • James C. Beidleman
   • Hermann Heineken

   Original Paper Pages: 18 - 30

6. Maximal cyclic subgroups and prime divisors in finite groups

   • Z. Arad
   • W. Herfort

   Original Paper Pages: 31 - 36

7. Der Verband der zusammenhängenden Untergruppen einer kommutativen algebraischen Gruppe

   • P. Plaumann
   • K. Strambach
   • G. Zacher

   Original Paper Pages: 37 - 48

8. A nilregular element property

   • Thierry Coquand
   • Henri Lombardi
   • Peter Schuster

   Original Paper Pages: 49 - 54

9. Maximal ℓ-Frattini quotients of ℓ-Poincaré duality groups of dimension 2

   • Thomas Weigel

   Original Paper Pages: 55 - 69

10. Several types of algebraic numbers on the unit circle

    • G. Kuba

    Original Paper Pages: 70 - 78

11. Describing the real numbers in terms of integers

    • Theo Grundhöfer

    Original Paper Pages: 79 - 81

12. An arithmetic proof of John’s ellipsoid theorem

    • Peter M. Gruber
    • Franz E. Schuster

    Original Paper Pages: 82 - 88

13. 16-dimensional compact projective planes with a large group fixing two points and two lines

    • Hermann Hähl
    • Helmut Salzmann

    Original Paper Pages: 89 - 100