1. Gröbner bases of contraction ideals

   • Takafumi Shibuta

   OriginalPaper 15 October 2011 Pages: 1 - 19

2. Arc-regular cubic graphs of order four times an odd integer

   • Marston D. E. Conder
   • Yan-Quan Feng

   OriginalPaper 19 October 2011 Pages: 21 - 31

3. A group theoretic characterization of classical unitals

   • Giorgio Donati
   • Nicola Durante

   OriginalPaper 13 October 2011 Pages: 33 - 43

4. Further Pieri-type formulas for the nonsymmetric Macdonald polynomial

   • W. Baratta

   OriginalPaper 19 October 2011 Pages: 45 - 66

5. Signed enumeration of ribbon tableaux: an approach through growth diagrams

   • Dominique Gouyou-Beauchamps
   • Philippe Nadeau

   OriginalPaper 10 November 2011 Pages: 67 - 102

6. Geometric complexity theory III: on deciding nonvanishing of a Littlewood–Richardson coefficient

   • Ketan D. Mulmuley
   • Hariharan Narayanan
   • Milind Sohoni

   OriginalPaper 04 November 2011 Pages: 103 - 110

7. Isomorphisms of groups related to flocks

   • Koen Thas

   OriginalPaper 12 November 2011 Pages: 111 - 121

8. On the cyclically fully commutative elements of Coxeter groups

   • T. Boothby
   • J. Burkert
   • M. Macauley

   OriginalPaper 19 November 2011 Pages: 123 - 148

9. Weighted intriguing sets of finite generalised quadrangles

   • John Bamberg
   • Alice Devillers
   • Jeroen Schillewaert

   OriginalPaper 29 November 2011 Pages: 149 - 173