1. An application of an optimal behaviour of the greedy solution in number theory

   • B. Vizvári

   OriginalPaper Pages: 69 - 83

2. On PP-rings

   • W. K. Nicholson

   OriginalPaper Pages: 85 - 88

3. Asymptotic expansion of norm associated with conjugate trigonometric polynomial

   • T. Jiang

   OriginalPaper Pages: 89 - 93

4. Greatest common divisors and least common multiples of graphs

   • G. Chartrand
   • L. Holley
   • M. Schultz

   OriginalPaper Pages: 95 - 104

5. Mortality of iterated Gallai graphs

   • Van Bang Le

   OriginalPaper Pages: 105 - 124

6. Finite invariant simplices in infinite graphs

   • N. Polat

   OriginalPaper Pages: 125 - 136

7. Iterative reading of numbers and “black-holes”

   • J. Dassow
   • S. Marcus
   • G. Paun

   OriginalPaper Pages: 137 - 152

8. Errata to Máté's paper “Remarks on the Ptak-Stein theorem” in vol. 23(1)

   Erratum Pages: 153 - 153