1. Relation between the distribution of the zeros of the solutions of a 2^nd order linear differential equation and the boundedness of these solutions

   • F. Neuman

   OriginalPaper Pages: 1 - 6

2. Graphs defined by coverings of a set

   • R. K. Guy
   • E. C. Milner

   OriginalPaper Pages: 7 - 21

3. Zur Theorie der Halbkörper. I

   • R. Eilhauer

   OriginalPaper Pages: 23 - 45

4. On topological spaces associated with digraphs

   • T. N. Bhargava
   • T. J. Ahlborn

   OriginalPaper Pages: 47 - 52

5. Operational results connected with some classical polynomials

   • S. K. Chatterjea

   OriginalPaper Pages: 53 - 58

6. On chromatic number of finite set-systems

   • L. Lovász

   OriginalPaper Pages: 59 - 67

7. On some extremal graphs

   • U. S. R. Murty

   OriginalPaper Pages: 69 - 74

8. A problem of the theory of communication networks

   • B. Bollobás

   OriginalPaper Pages: 75 - 80

9. Rational approximation in certain classes of functions

   • J. Szabados

   OriginalPaper Pages: 81 - 85

10. On a problem of strong summability of Fourier series

    • L. Leindler

    OriginalPaper Pages: 87 - 94

11. Structural properties of continuous functions connected with the order of rational approximation. II

    • J. Szabados

    OriginalPaper Pages: 95 - 102

12. On the minimal density of maximal packings of the plane by convex bodies

    • R. P. Bambah
    • A. C. Woods

    OriginalPaper Pages: 103 - 116

13. A limit theorem for the maximum of cumulative sums

    • M. Sreehari

    OriginalPaper Pages: 117 - 120

14. Idempotent signed measures on a discrete group

    • J. H. B. Kemperman

    OriginalPaper Pages: 121 - 128

15. Plus grand groupe image homomorphe et isotone d'un monoïde ordonné: Caractérisations des anneaux «Clos»

    • J. Querré

    OriginalPaper Pages: 129 - 146

16. Translations and congruences in lattices

    • P. A. Grillet

    OriginalPaper Pages: 147 - 162

17. Some remarks about the duality relation in queues

    • A. Ghosal

    OriginalPaper Pages: 163 - 170

18. One-sided ideals in the endomorphism ring of an abelianp-group

    • G. S. Monk

    OriginalPaper Pages: 171 - 185

19. Halbgruppen, deren elemente durch primideale trennbar sind

    • G. Szász

    BriefCommunication Pages: 187 - 189

20. О Распределении Значений Целой Функции Ро Аргументам

    • А. А. Гольдберг

    OriginalPaper Pages: 191 - 199

21. Über Starke Approximation mit Hilfe Einer Klasse von Interpolationspolynomen

    • G. Freud

    OriginalPaper Pages: 201 - 208

22. On sets of almost disjoint subsets of a set

    • P. Erdős
    • A. Hajnal
    • E. C. Milner

    OriginalPaper Pages: 209 - 218

23. Eine Charakterisierung der Primitiven Ideale Eines Ringes

    • O. Steinfeld

    BriefCommunication Pages: 219 - 220