Noncommutative rings


their applications

LENS 1-4 July 2013

  1. General overview
  2. Scientific committee
  3. Participants
  4. Program
  5. Talks
  6. Abstracts
  7. Proceedings
  8. Pictures
  9. Social and cultural events
  10. Arriving in Lens
  11. The faculty Jean Perrin
  12. Hotels
  13. Meals
  14. Contacts
  15. Sponsors

General overview

a) The congress took place from July 1st till July 4th in the Science Faculty of the University of Artois.
b) The aim was to gather specialists in ring theory and in areas where this theory is used (for example in coding theory and cryptography). Prof. Steven Dougherty gave a course showing some of the ways (noncommutative) ring theory has influenced coding theory. The 4 invited speakers were: Alberto Facchini, Dolors Herbera, Edmund Puczylowski and Patrick Solé. Participants will have the possibility of presenting their results.

Scientific committee

  1. Steven Dougherty, University of Scranton, USA.
  2. Alberto Facchini, University of Padova, Italy.
  3. Dolors Herbera, Universitat Automna de Barcelona, Spain.
  4. S.K. Jain, University of Ohio,USA and King Abdulaziz University Saudi Arabia.
  5. Jerzy Matczuk, Warsaw University, Poland.
  6. Edmund Puczylowski, Warsaw University, Poland
  7. Patrick Solé, ParisTech, France.
  8. Félix Ulmer, University of Rennes, France.

Back to top of the page

List of participants

  1. Abrams Gene, University of Colorado, Colorado Springs (USA)
  2. Ahmad Dar Nadeem, Aligarh Muslim University (India)
  3. Alkan Mustafa, Akdeniz University Antalya(Turkey)
  4. Barry Mamadou, Université Cheikh Anta Diop Dakar (Sénégal)
  5. Bavula Vladimir, Sheffield University (U.K.)
  6. Bien Mai Hoang, Leiden University (Nederland) and Padova University (Italie)
  7. Booth Geoffrey, N. Mandela Metropolitan University Port Elizabeth (South Africa)
  8. Boulagouaz M'Hammed, Faculté des sciences et techniques Fès (Morroco)
  9. Buckley Stephen, National University of Ireland Maynooth (Ireland).
  10. Candau Marion, Université de Bretagne Occidentale à Brest (France)
  11. Catoiu Stefan, De Paul university, Chicago (USA)
  12. Cherchem Ahmed, Université USTHB, Alger (Algérie)
  13. Dougherty Steven, Scranton University, Pensylvania (USA)
  14. Facchini Alberto, Padova University, Italy (Italy)
  15. Fernandez-Cordoba Cristina, Universitat autonoma de Barcelona (Spain)
  16. Ferrer Walter, Universidad de la República, Montevideo (Uruguay)
  17. Ginosar Yuval, Haifa University (Israel)
  18. Gursoy Fatmanur, Yildiz Technical university, Istanbul (Turkey)
  19. Herbera Dolors, Universitat autonoma de Barcelona (Spain)
  20. Hryniewicka Malgorzata, Bialystok University (Poland)
  21. Jakelic Dijana, University of North Carolina, Wilmington (USA) and Max Planck Institute for Mathematics, Bonn (Germany)
  22. Jordan David, Sheffield University (U.K.)
  23. Kanwar Pramod, Ohio University (USA)
  24. Kharchenko Vladislav, National Autonomous University of Mexico UNAM (Mexique)
  25. Karadeniz Suat Fatih University, Istanbul (Turkey)
  26. Krempa Jan, Warsaw University (Poland)
  27. Leroy André, Université d'Artois, Lens (France)
  28. Lomp Christian, Porto University (Portugal)
  29. Matczuk Jerzy, Warsaw University (Poland)
  30. Nadim Khan Abdul Aligarh, university (India)
  31. Nguyen Khan Tung University of Padova (Italy)
  32. Odemis-Ozger Zeynep Fatih university, Istanbul (Turkey)
  33. Polcino Miles César, Universidade Federal do ABC and the Universidade de São Paulo (Brazil).
  34. Puczylowski Edmund Warsaw University (Poland)
  35. Salahuddin Mohammad Aligarh Muslim University (India)
  36. Salturk Esengul, Yildiz Technical University Istanbul (Turkey)
  37. Schnabel Ofir, Haifa University (Israel)
  38. Serda Javier,Universidade de São Paulo (Brazil)
  39. Smertnig Daniel, University of Graz (Austria)
  40. Solé Patrick, Telecom Paris-Tech (France)
  41. Sow Djiby, departement de mathématiques et informatique, Université Cheik Anta Diop (Senegal)
  42. Swistek Lukasz Warsaw University (Poland)
  43. Szabo Steve, Eastern Kentucky University (USA)
  44. Ten Roger, Universitat autonoma de Barcelona (Spain)
  45. Ulmer Felix, Université de Rennes (France)
  46. Usefi Hamid, Memorial University St John's, Newfoundland (Canada)
  47. Vivas Quimey, Universidad de Buenos Aires (Argentina)
  48. Yemen Olfa, Université de Tunias El Manar (Tunisia)
  49. Yildiz Bahattin, Fatih university Istanbul (Turkey)
  50. Yousif Mohammed, Ohio State University (USA)
  51. Zhou Yiqiang, Memorial University, Newfoundland (Canada)
  52. Ziembowski Michal, Warsaw University (Poland)

Back to top


Program (Schedule and abstracts)


Prof. Steven Dougherty's course is divided in 5 parts. Many thanks, Steven for letting me put these on the web page! Part A, Part B, Part C, Part D, Part E.
The slides of most of the talks are available hereunder. I thank the participants to allow me to make these "world-wide visible"!
  1. Abrams Gene, Primitive Leavitt path algebras and a question of Kaplansky.
  2. Alkan Mustafa, Second Modules over Noncommutative Ring.
  3. Bavula Vladimir, Characterizations of left orders in left Artinian rings.
  4. Booth Geoffrey, Primeness in near-rings of Continuous Functions.
  5. Boulagouaz M'Hammed, About Polynomial Codes.
  6. Buckley Stephen, Notions of isoclinism for rings, with applications.
  7. Candau Marion, Non-commutative convolutional codes over the infinite dihedral group.
  8. Catoiu Stephan, Ideals of the algebra U(sl_3).
  9. Cherchem Ahmed, Recurrences over division rings.
  10. Facchini Alberto, Semilocal categories, local functors and applications.
  11. Ginosar Yuval, Maximal isotropic subgroups.
  12. Herbera Dolors, Inversion height, rational series and crossed products.
  13. Hryniewicka Malgorzata, On rings with finite number of orbits.
  14. Jakelic Dijana, On q-characters of fundamental representations of quantum affine algebras at roots of unity.
  15. Jordan David, Simple ambiskew polynomial rings.
  16. Kanwar Pramod, On idempotents and clean elements in certain ring extensions.
  17. Karadeniz Suat, Extremal binary self-dual codes of length $64$ from four-circulant constructions over $\F_2+u\F_2$.
  18. Kharchenko Vladislav, Quantifications of Kac-Moody algebras.
  19. Krempa Jan, Every lattice is a lattice of annihilators.
  20. Lomp Chrstian, Noetherian rings whose injective hulls of simple modules are locally Artinian.
  21. Odemis-Ozger Zeynep, Bounds On Codes Over Zps With The Extended Lee Weight.
  22. Polcino Miles Cesar, Jordan Nilpotency in Group Rings.
  23. Puczylowski Edmund, On prime ideals and radicals of polynomial rings and Z-graded rings.
  24. Salturk Esengul, Counting Additive Z2 Z4 Codes.
  25. Schnabel Ofir, Simply-connected gradings of complex matrix algebras.
  26. Serda Javier, Free group algebras generated by symmetric elements inside division rings with involution.
  27. Smertnig Daniel, Sets of lengths in maximal orders in central simple algebras.
  28. Solé Patrick, Lower bounds on the minimum distance of long codes in the Lee metric.
  29. Sow Djiby, Gr\"obner bases over "Dual Euclidean domain".
  30. Szabo Steve, Algebras Having Bases Consisting Entirely of Units.
  31. Usefi Hamid, Isomorphism problem for enveloping algebras.
  32. Yildiz Bahattin, Linear codes over $\Z_4+u\Z_4$]{Linear Codes over $\Z_4+u\Z_4$:Projections, Lifts and formally self-dual codes.
  33. Yousif Mohamed, Tau-Projective Modules.
  34. Zhou Yiqiang, On Modules over Group Rings.
  35. Ziembowski Michal, On classical rings of quotients of duo rings.

Back to top


Abstracts and program


If enough participants are ready to submit an article there will be a proceedings. The papers submitted will be refereed in a classical way. The scientific committee will serve as an editorial board. Contact with potential publishers will soon be taken. Please do consider to submit such an article.
The AMS contemporary Math. series have given a preliminary approval for publishing the proceedings of the conference.
You will soon be contacted by Christine Thiverge (from AMS contemporary Math.) about this. Please do consider to submit an article.
Back to top of the page


Here are some of the pictures:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15

Social and cultural event

The famous museum "Le Louvre" just opened "a branch" in Lens (It was inaugurated by the French President on 4th December 2012). This is the result of a very long history. I have not yet visited the museum, but I'll do it soon, for sure. It is at walking distance from the faculty and it seems that the museum will during the first year. Here are some links....take a look! Louvre II or also the following one.
Back to top of the page

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. Notice that as far as I know there are no connection by plane between Charles de Gaulle airport and Lesquin so even if your ticket plane says that you have a stop in CDG and then go to Lesquin it is highly probable that this last part of your journey (from CDG to Lesquin) will be by train!
    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 faster since there are not too many direct train from CDG to Lens).
    CDG airport
    Connection between CDG airport and Lens Train from CDG airport

  • Beauvais (IATA code BVA) This airport 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
    train connections from Beauvais

  • 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 Charleroi and then take a train to Lens (probably via Lille). There are quite a few low cost companies using this airport.
    Charleroi 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

    Back to top of the page

    The faculty Jean Perrin

    The talks will take place in the "Faculté Jean Perrin", probably in room E7-E8 in the building A. This Faculty 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 and solve your math. problems!
    Here is a map of Lens
    The picture of the faculty is on my web page.


    I can reserve a room for you but of course you can do it directly as well (if you want me to do so, please mention it while registering).
    1) The closest hotel is the Hotel Bollaert. I get a special discount for the participants: a single room without breakfast will cost 75 Euros/night. Here is a link for the hotel Bollaert
    2) The hotel "Campanile Lens" is not too far (about 30 minuts walk). If you have a car... Here is a link for the hotel Campanile
    3) The hotel "Le Paris Brest-Brest" is located nearly in front of the train station. This means at about 15 minuts walk from the faculty. For more information on this hotel click here


    The breakfasts and the lunches will be offered to all the participants during the congress.


    Address of organizer :
    André Leroy
    Home page ou ICI


    1. LML (laboratoire de mathématiques de Lens).
    2. BQR
    3. Conseil général du nord pas de Calais.
    4. Fédération des universités du nord pas de Calais.
    5. Banque populaire du Nord.