1. Depth and regularity modulo a principal ideal

   • Giulio Caviglia
   • Huy Tài Hà
   • Ngo Viet Trung

   OriginalPaper 30 January 2018 Pages: 1 - 20

2. Construction and nonexistence of strong external difference families

   • Jonathan Jedwab
   • Shuxing Li

   OriginalPaper 01 February 2018 Pages: 21 - 48

3. Defective dual varieties for real spectra

   • Jens Forsgård

   OriginalPaper Open access 27 February 2018 Pages: 49 - 67

   

4. Reflexive polytopes arising from partially ordered sets and perfect graphs

   • Takayuki Hibi
   • Akiyoshi Tsuchiya

   OriginalPaper 20 February 2018 Pages: 69 - 81

5. The power graph of a torsion-free group

   • Peter J. Cameron
   • Horacio Guerra
   • Šimon Jurina

   OriginalPaper 28 February 2018 Pages: 83 - 98

6. Heisenberg algebra, wedges and crystals

   • Thomas Gerber

   OriginalPaper 19 March 2018 Pages: 99 - 124