1. Diameter-vital edges in a graph

   • H. B. Walikar
   • Fred Buckley
   • Medha Itagi Huilgol

   OriginalPaper 14 July 2011 Pages: 201 - 211

2. Axiomatizations of quasi-Lovász extensions of pseudo-Boolean functions

   • Miguel Couceiro
   • Jean-Luc Marichal

   OriginalPaper 31 July 2011 Pages: 213 - 231

3. Converse Jensen–Steffensen inequality

   • S. Ivelić
   • M. Klaričić Bakula
   • J. Pečarić

   OriginalPaper 17 May 2011 Pages: 233 - 246

4. Quotient mean, its invariance with respect to a quasi-arithmetic mean-type mapping, and some applications

   • Janusz Matkowski

   OriginalPaper Open access 12 July 2011 Pages: 247 - 253

5. On ω-strongly quasiconvex and ω-strongly quasiconcave sequences

   • Jacek Tabor
   • Józef Tabor
   • Marek Żołdak

   OriginalPaper 10 September 2011 Pages: 255 - 268

6. Jensen’s functional equation on the symmetric group S_n

   • Công-Trình Lê
   • Trung-Hiêu Thái

   OriginalPaper 12 July 2011 Pages: 269 - 276

7. Decomposing complete tripartite graphs into 5-cycles when the partite sets have similar size

   • Elizabeth J. Billington
   • Nicholas J. Cavenagh

   OriginalPaper 28 September 2011 Pages: 277 - 289

8. A functional equation with a symmetric binary operation

   • Zoltán Daróczy
   • Judita Dascăl

   OriginalPaper 09 September 2011 Pages: 291 - 297

9. The symmetrized Sine addition formula

   • Dilian Yang

   OriginalPaper 02 August 2011 Pages: 299 - 318

10. Erratum to: On the pairs of multiplicative functions satisfying some relations

    • Nader L. Bassily
    • Imre Kátai

    Erratum 01 September 2011 Pages: 319 - 320