Sixth International Workshop on
Optimal Codes and Related Topics
June 16 - 22, 2009, Varna, BULGARIA


ORGANIZED BY

Institute of Mathematics and Informatics, Bulgarian Academy of Sciences


  PROGRAMME COMMITTEE   ORGANIZING COMMITTEE

    Stefan Dodunekov (Sofia)
    Marcus Greferath (Dublin)
    Tor Helleseth (Bergen)
    Ivan Landjev (Sofia)
    Juriaan Simonis (Delft)
    Leo Storme (Gent)
    Henk van Tilborg (Eindhoven)
    Wolfgang Willems (Magdeburg)

    Silvia Boumova (Sofia)
    Peter Boyvalenkov (Sofia)
    Emil Kolev (Sofia)
    Ivan Landjev (Sofia)
    Nikolay Manev (Sofia)
    Tsonka Biacheva (Veliko Tarnovo)


SCIENTIFIC PROGRAMME
Name
Full text paper
Conference presentation
Ts. Baicheva. Normality of some binary linear codes
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S. Bezzateev, N. Shekhunova. Goppa codes for correcting nonuniform distributed errors
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Yu. Borisov, K. Manev. Note on a class of Boolean functions
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I. Bouyukliev, E. Jacobsson. Minimum lengths for codes with given minimal primal and dual distance
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S. Bouyuklieva, A. Malevich, W. Willems. On extremal codes with automorphisms
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S. Bouyuklieva, R. Russeva, N. Yankov, N. Ziapkov, M. Nikolova. On the classification of binary self-dual [44,22,8] codes with an automorphism of order 3
full text
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S. Bouyuklieva, Z. Varbanov, K. Toncheva. A class of singly even self-dual codes
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P. Boyvalenkov, H. Kulina. On the structure of binary orthogonal arrays with small covering radius
full text
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P. Boyvalenkov, M. Stoyanova. New asymptotic bounds for some spherical designs
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E. Byrne, M. Greferath, A. Kohnert, V. Skachek. Refined bounds for ring-linear codes
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E. Chen. Computer construction of quasi-twisted two-weight codes
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R. Daskalov, E. Metodieva. Good (n, r)-arcs in P G(2, 23)
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R. Daskalov, E. Metodieva. Multiple blocking sets in P G(2, 23)
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Z. Furedi, M. Ruszinko. ́Regular union and cover free families
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O. Heden, F. Soloveva. On partitions into nonparallel Hamming codes
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P. Hristov. Some new linear codes over small finite fields
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S. Kapralov, M. Manev. New bounds for the length of the optimal (N, 11, 2, 3) superimposed codes
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M. Kiermaier, M. Koch. New complete 2-arcs in the uniform projective Hjelmslev planes over chain rings of order 25
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E. Kolev. Nonadaptive search for two elements with sets of equal sum
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H. Kostadinov, N. Manev, H. Morita. On ±1-error correctable integer residue codes
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D. Krotov. On weight distributions of perfect structures
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I. Landjev, S. Boev, Th. Honold. Optimal arcs in Hjelmslev spaces of higher dimension
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I. Landjev, A. Rousseva. The nonexistence of some optimal arcs in P G(4, 4)
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V. Lomakov. Additional relations connecting coefficients of the error locator polynomial
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M. Manev. The uniqueness of the optimal (28,8,2,3) and (30,10,2,3) superimposed codes
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C. Patsakis, N. Alexandris. Hiding information in products of integers
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R. Radescu. A new operating tool for coding in lossless image compression
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S. Shtrakov. On a class of functions in finite algebras
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D. Spasov, M. Gusev. Some notes on the binary Gilbert-Varshamov bound
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T. Todorov, G. Bogdanova. Methods for equidistant code search in computer package QPlus
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S. Topalova, S. Zhelezova. Parallelisms of PG(3,4) with automorphisms of order 7
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Z. Varbanov. Additive circulant graph codes over GF (4)
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TOPICS

  • Optimal linear codes over finite fields and rings
  • Spherical codes and designs
  • Covering problems for linear and nonlinear codes
  • Optimization problems for nonlinear codes
  • Sets of points in finite geometries
  • Combinatorial configurations and codes
  • Optimality problems in cryptography
  • Graph theory and codes;
  • Related topics

  • LOCATION


    .
    The Workshop will take place at hotel St. Elena. Varna is the nearest airport. More information by oc2009@math.bas.bg.


    DEADLINES


    March 31, 2008: to inform the organizers, if you intend to come;
    April 15, 2008: deadline for submission of papers;
    May 1, 2008: notification of acceptance (to be mailed out).


    ACCOMMODATION AND REGISTRATION FEES

    EURO 550/600 (Double/Single room) prior to May 16, 2009;
    EURO 600/650 (Double/Single room) after May 16, 2009;
    EURO 400 for students (Double room)
    EURO 350 for spouses.

    The registration fee includes accommodation in a hotel, full board, social events, workshop proceedings.

    Payment should be done in EURO by bank transfer to the following account:

    UNICREDIT BULBANK, Kaloyan Branch
    3 Kaloyan Str., Sofia 1000, Bulgaria
    BIC CODE: UNCRBGSF
    IBAN: BG 85 UNCR 7630 3400 0012 91 / EUR/
    Institute of Mathematics and Informatics, ACCT2008

    Payments after May 16, 2009, can be in cash upon arrival.


    LANGUAGE


    SUBMISSIONS

    Authors are invited to submit camera ready papers in Latex (at most six pages) by e-mail to oc2009@moi.math.bas.bg.


    SOCIAL EVENTS

    A welcome party, a banquet, an excursion.