1. Eulerian abstract polytopes

   • Michael I.  Hartley

   OriginalPaper 10 March 2011 Pages: 1 - 23

2. The {k}-domatic number of a graph

   • D. Meierling
   • S. M. Sheikholeslami
   • L. Volkmann

   OriginalPaper 12 February 2011 Pages: 25 - 34

3. Realizations of regular polytopes, III

   • Peter McMullen

   OriginalPaper 03 February 2011 Pages: 35 - 63

4. Rank numbers for some trees and unicyclic graphs

   • Emily Sergel
   • Peter Richter
   • Darren A. Narayan

   OriginalPaper 05 May 2011 Pages: 65 - 79

5. The set of dynamically special points

   • B. Sankara Rao
   • I. Subramania Pillai
   • V. Kannan

   OriginalPaper 03 March 2011 Pages: 81 - 90

6. Topological transitivity for a class of monotonic mod one transformations

   • Peter Raith
   • Angela Stachelberger

   OriginalPaper 24 March 2011 Pages: 91 - 109

7. On cyclic compositions of positive integers

   • Arnold Knopfmacher
   • Florian Luca
   • Neville Robbins

   OriginalPaper 15 May 2011 Pages: 111 - 122

8. Nilpotent and invertible values in semiprime rings with generalized derivations

   • Asma Ali
   • Shakir Ali
   • Vincenzo De Filippis

   OriginalPaper 01 February 2011 Pages: 123 - 134

9. A note on a modification of Gajda’s equation

   • Żywilla Fechner

   OriginalPaper Open access 26 May 2011 Pages: 135 - 141

10. Twofold 2-perfect bowtie systems with an extra property

    • Elizabeth J. Billington
    • C. C. Lindner
    • Mariusz Meszka

    OriginalPaper 20 April 2011 Pages: 143 - 153

11. Optimal difference systems of sets and difference sets

    • Xin Wang
    • Jinhua Wang

    OriginalPaper 03 June 2011 Pages: 155 - 164

12. Systèmes hamiltoniens complètement intégrables

    • A. Lesfari

    OriginalPaper 17 May 2011 Pages: 165 - 200