Symposium dedicated to the work of prof. Tor Helleseth

December 6-7, 2022, Solstrand Hotel & Bad

Organized by the Selmer Center of the University of Bergen

We are pleased to announce the Symposium dedicated to the work of prof. Tor Helleseth which aims to bring together friends, colleagues, and members of the Selmer Center. The event is dedicated to Tor Helleseth’s 75th anniversary and will focus on talks and discussions related to prof. Helleseth’s contributions to the fields of cryptography, coding theory, and sequence design, and their impact and consequences.

General chairs

  • Lilya Budaghyan, University of Bergen
  • Nikolay Kaleyski, University of Bergen

Organizing committee

  • Nadiia Ichanska
  • Enrico Piccione
  • Øyvind Ytrehus


  • Lilya Budaghyan, University of Bergen
  • Carlos Cid, Simula UiB and OIST
  • Ermes Franch, University of Bergen
  • Tor Helleseth, University of Bergen
  • Nadiia Ichanska, University of Bergen
  • Inge Jonassen, University of Bergen
  • Nikolay Kaleyski, University of Bergen
  • Oleksandr Kazymyrov, Storebrand
  • Oleksandr Kholosha, Ukrainian Catholic University and Banking University
  • Chunlei Li, University of Bergen
  • Dian Li, University of Bergen
  • Erik Mårtensson, University of Bergen
  • Leif Nilsen, Thales
  • Mohit Pal, University of Bergen
  • Enrico Piccione, University of Bergen
  • Håvard Raddum, Simula UiB
  • Vincent Rijmen, KU Leuven and University of Bergen
  • Chunming Rong, University of Stavanger
  • Eirik Rosnes, Simula UiB
  • Palash Sarkar, University of Bergen
  • Linda Vagtskjold, University of Bergen
  • Yanan Wu, Hubei University and University of Bergen
  • Øyvind Ytrehus, Simula UiB and University of Bergen


  • Lilya Budaghyan
  • Tor Helleseth
  • Nikolay Kaleyski
  • Oleksandr Kholosha
  • Chunlei Li
  • Chunming Rong
  • Øyvind Ytrehus

Tentative Program

Day 1
Day 2 
08:45 Departure from Bergen (Bus next to the department building)
Session 1 is led by Leif Nilsen
09:00 Lilya Budaghyan
10:00 Oleksandr Kholosha
09:40 Refreshments at Solstrand
11:00 Coffee break
Session 1 is led by Vincent Rijment
10:00 Tor Helleseth
                                          “Selmer and the Selmer Center
11:30 Chunming Rong
                                          “Computing from Gröbner-Bases to OpenIaC
Session 2
11:30 Nikolay Kaleyski
12:30 Lunch
12:30 Lunch
Session 2 is led by Carlos Cid
14:00 Øyvind Ytrehus
                       “Tor: Mentor”
15:00 Chunlei Li
                        “Pseudorandom Sequences for Good Randomness
15:00 Departure to Bergen
16:00 Back to Bergen
16:00 Break with refreshments

19:00 Apéritif
19:30 Banquet