Noncommutative rings


their applications

LENS 14th June- 16th June 2011

  1. Thanks
  2. Participants
  3. Program
  4. Talks
  5. Abstracts
  6. Arriving in Lens
  7. The faculty Jean Perrin
  8. Pictures
  9. Contacts
  10. Sponsors


The mini-course and related congress took place from june 14th till June 16th 2011 in Lens. Many thanks to all the participants, specially to those who presented their work. Many thanks to Professor Srivastava for his very nice exposition. I hope to see you soon...maybe in 2013?!

List of participants

Z.A. Balogh, University College NYIREGYHAZA, Hungary (
J. Baudry, IUT Lens, France (
D. Boucher, UFR des Sciences, Université de Rennes, France (
M. Boulagouaz, Faculté des Sciences et Techniques de Fès, Marocco (
S. Catoiu, De Paul University, USA (
G. Cauchon, Université de Reims, France (
M.C. Cauchon PRAG, Meaux, France
A. Cherchem, Faculty of Mathematics, USTHB, Alger, Algeria (
S. Dougherty, University of Scranton, USA (
A. Facchini, Padova University, Italy (
M. Hryniewicka, University of Bialystok, Poland (
P. Kanwar, University of Ohio, Zanesville, USA (
A. Kaucikas, M. Romeris University, Vilnius, Lithuania (
A. Leroy, Université d'Artois, Lens, France (
J. Matczuk, University of Warsaw, Poland (
E. Ozman, Max Planck Institute of mthemtics (
A. Srivastava, Saint Louis Unversity, Missouri (
A. Stocka University of Bialystok, Poland (
D. Sow, departement de mathématiques et informatique, Université Cheik Anta Diop, Senegal (
J. Ye, Université de Lille1, France
M. Ziembowski, Warsaw University of Technology, Poland.



Z.A. Balogh, Involutions in group algebras.
D. Boucher, About codes defined over skew polynomials
M. Boulagouaz, (sigma, delta)-codes over rings.
S. Dougherty, Avenues of research for codes over rings.
A. Facchini, Krull-Schmidt theorem: the case two.
A. Kaucikas, Strongly prime modules, rings and radicals.
E. Ozman, Jacobians of Modular Curves, Divisors and Twists.
D. Sow, Généralisation des courbes de Huff et applications en crypto.
M. Ziembowski, Right Gaussian rings and skew power series rings.


Queques résumés.

Arriving in Lens

BY PLANE There are 4 different airports not too far from Lens;

  • Lesquin (International Air Transport Association: LIL). This the airport of Lille (the biggest city in north of France) It is the closest (35 km from Lens). If you arrive via this airport you will have to take a bus to the Lille railway station (Lille Flandres) and then take a train to Lens.
    Lesquin (Lille) airport;

  • Charles de Gaulle at Roissy (IATA code: PAR; ICAO code: CDG). This is the most likely airport of arrival if you are coming from abroad. There is a train station and you can connect directly to Lens or go to Lille and in Lille take a train to Lens (this is sometimes quicker since there are not too many direct train from CDG to Lens).
    CDG airport:
    Connection between CDG airport and Lens

  • Beauvais (IATA code BVA) This airoprt is very close to the city of Beauvais (Tillé). You could arrive to this airport specially if you use low fare airlines. There is frequent bus shuttle to the center of Beauvais and from there you can take a train to Lens via Paris nord 'and possibly with a stop in Arras).
    Beauvais airport:
    for train connection:

  • Charleroi (IATA code CRL) This airport is in Belgium (also called Brussels south airport). This airport is not too far from Lens but you will have to take a shuttle to Brussels or to Charlroi and then take a train to Lens (probably via Lille). There are quite a few low cost companies using this airport.
    Note !!: if you want to arrive via this airport and need a visa, be sure you are OK. I think you need a visa from the country you are entering Europe so in this case this would mean Belgium....

    BY CAR From Paris take the A1 in direction of Lille and in Hennin Beaumont take the A 21. Leave this highway at Lens centre. The building of the "faculté Jean Perrin" is very close to the Bollaert stadium. This building is known as the "batiments des mines".

    BY TRAIN You can get information on the connections at the following URL

    The faculty Jean Perrin

    The talks took place in the local P100 of the "Faculté Jean Perrin". This building is part of the university of Artois. The address is "23 Rue Jean Souvraz, Lens, France". It is located in a very nice and impressive building that served as offices for the coal mines till the 60's. It is still known as "le bureau des mines" by the local population. It is about 15 minutes walk from the train station and is quite close to the "Stade Bollaert". In front of this building there is a nice park where you can have a walk and relax or just think!
    Here is a map of Lens
    The picture of the faculty is on my web page.
    Here is another address where you can see it:
    Picture of the Faculty
    look at these !


    Here are some pictures...


    Address of organizer :
    André Leroy (gmail, prefered)
    André Leroy
    Home page


    1. LML (laboratoire de mathématiques de Lens).
    2. Fédération des universités du nord pas de Calais.
    3. Relations internationales de l'Université d'Artois.