Patric Östergård

Professor

Research outputs

  1. 2019
  2. Published

    New lower bounds on q-ary error-correcting codes

    Laaksonen, A. & Östergård, P. R. J., 15 Sep 2019, In : CRYPTOGRAPHY AND COMMUNICATIONS. 11, 5, p. 881-889 9 p.

    Research output: Contribution to journalArticle

  3. Published

    New Results on Tripod Packings

    Östergård, P. R. J. & Pöllänen, A., 15 Mar 2019, In : Discrete and Computational Geometry. 61, 2, p. 271–284 14 p.

    Research output: Contribution to journalArticle

  4. Published

    The sextuply shortened binary Golay code is optimal

    Östergård, P. R. J., 15 Mar 2019, In : Designs, Codes and Cryptography. 87, 2-3, p. 341–347 7 p.

    Research output: Contribution to journalArticle

  5. E-pub ahead of print

    On the structure of small strength-2 covering arrays

    Kokkala, J., Meagher, K., Naserasr, R., Nurmela, K. J., Östergård, P. R. J. & Stevens, B., 1 Jan 2019, In : Journal of Combinatorial Designs.

    Research output: Contribution to journalArticle

  6. 2018
  7. Published

    Mappings of Butson-type Hadamard matrices

    Östergård, P. R. J. & Paavola, W. T., 1 Sep 2018, In : Discrete Mathematics. 341, 9, p. 2387-2397 11 p.

    Research output: Contribution to journalArticle

  8. Published

    Switching of covering codes

    Östergård, P. R. J. & Weakley, W. D., Jun 2018, In : Discrete Mathematics. 341, 6, p. 1778-1788 11 p.

    Research output: Contribution to journalArticle

  9. Published

    There is no McLaughlin geometry

    Östergård, P. R. J. & Soicher, L. H., 1 Apr 2018, In : Journal of Combinatorial Theory. Series A. 155, p. 27-41 15 p.

    Research output: Contribution to journalArticle

  10. Published

    Enumeration of Seidel matrices

    Szöllősi, F. & Östergård, P. R. J., 1 Mar 2018, In : European Journal of Combinatorics. 69, p. 169-184 16 p.

    Research output: Contribution to journalArticle

  11. Published

    On the domination number of 2-dimensional torus graphs

    Crevals, S. & Östergard, P. R. J., 1 Mar 2018, In : Utilitas Mathematica. 106, p. 289-300 12 p.

    Research output: Contribution to journalArticle

  12. Published

    The chromatic number of the square of the 8-cube

    Kokkala, J. I. & Östergård, P. R. J., 1 Jan 2018, In : Mathematics of Computation. 87, 313, p. 2551-2561 11 p.

    Research output: Contribution to journalArticle

  13. Published

    New Lower Bounds for Binary Constant-Dimension Subspace Codes

    Braun, M., Östergård, P. R. J. & Wassermann, A., 2018, In : Experimental Mathematics. 27, 2, p. 179-183 5 p.

    Research output: Contribution to journalArticle

  14. 2017
  15. Published

    LCL problems on grids

    Brandt, S., Hirvonen, J., Korhonen, J. H., Lempiäinen, T., Östergård, P. R. J., Purcell, C., Rybicki, J., Suomela, J. & Uznański, P., 26 Jul 2017, PODC 2017 - Proceedings of the ACM Symposium on Principles of Distributed Computing. Vol. Part F129314. p. 101-110 10 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  16. Published

    New lower bounds for the Shannon capacity of odd cycles

    Mathew, K. A. & Östergård, P. R. J., Jul 2017, In : DESIGNS CODES AND CRYPTOGRAPHY. 84, 1-2, p. 13-22 10 p.

    Research output: Contribution to journalArticle

  17. Published

    Total domination of grid graphs

    Crevals, S. & Ostergard, P. R. J., 1 May 2017, In : JCMCC. 101, p. 175-192 18 p.

    Research output: Contribution to journalArticle

  18. Published

    Classification of Cyclic Steiner Quadruple Systems

    Chang, Y., Fan, B., Feng, T., Holt, D. F. & Östergård, P. R. J., Mar 2017, In : Journal of Combinatorial Designs. 25, 3, 19 p.

    Research output: Contribution to journalArticle

  19. Published

    Planar Hypohamiltonian Graphs on 40 Vertices

    Jooyandeh, M., Mckay, B. D., Östergård, P. R. J., Pettersson, V. H. & Zamfirescu, C. T., Feb 2017, In : JOURNAL OF GRAPH THEORY. 84, 2, p. 121-133 13 p.

    Research output: Contribution to journalArticle

  20. Published

    Constructing error-correcting binary codes using transitive permutation groups

    Laaksonen, A. & Östergård, P. R. J., 2017, In : Discrete Applied Mathematics. 233, p. 65-70

    Research output: Contribution to journalArticle

  21. Published

    New lower bounds on error-correcting ternary, quaternary and quinary codes

    Laaksonen, A. & Östergård, P. R. J., 2017, Coding Theory and Applications - 5th International Castle Meeting, ICMCTA 2017,Proceedings. Springer Verlag, Vol. 10495 LNCS. p. 228-237 10 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 10495 LNCS).

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

  22. 2016
  23. Published

    Existence of q-analogs of Steiner systems

    Braun, M., Etzion, T., Östergård, P. R. J., Vardy, A. & Wassermann, A., 30 Aug 2016, In : FORUM OF MATHEMATICS, PI. 4, 14 p., e7.

    Research output: Contribution to journalArticle

  24. Published

    Further results on the classification of MDS codes

    Kokkala, J. I. & Östergård, P. R. J., 1 Aug 2016, In : Advances in Mathematics of Communications. 10, 3, p. 489-498 10 p.

    Research output: Contribution to journalArticle

  25. Published

    Non-existence of a ternary constant weight (16, 5, 15; 2048) diameter perfect code

    Krotov, D. S., Östergård, P. R. J. & Pottonen, O., 1 May 2016, In : Advances in Mathematics of Communications. 10, 2, p. 393-399 7 p.

    Research output: Contribution to journalArticle

  26. Published

    Algorithms for finding maximum transitive subtournaments

    Kiviluoto, L., Östergård, P. R. J. & Vaskelainen, V. P., 1 Feb 2016, In : JOURNAL OF COMBINATORIAL OPTIMIZATION. 31, 2, p. 802-814 13 p.

    Research output: Contribution to journalArticle

  27. 2015
  28. Published

    Bounds on the domination number of Kneser graphs

    Östergård, P. R. J., Shao, Z. & Xu, X., 2015, In : ARS MATHEMATICA CONTEMPORANEA. 9, 2, p. 197-205

    Research output: Contribution to journalArticle

  29. Published

    Classification of Graeco-Latin cubes

    Kokkala, J. I. & Östergård, P. R. J., 2015, In : Journal of Combinatorial Designs. 23, 12, p. 509-521

    Research output: Contribution to journalArticle

  30. Published

    Classification of MDS codes over small alphabets

    Kokkala, J. I., Krotov, D. S. & Östergård, P. R. J., 2015, Coding Theory and Applications. Pinto, R., Rocha Malonek, P. & Vettori, P. (eds.). Sveitsi, p. 227-235

    Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

  31. Published

    Enumeration of Steiner triple systems with subsystems,

    Kaski, P., Östergård, P. R. J. & Popa, A., 2015, In : Mathematics of Computation. 84, p. 3051-3067

    Research output: Contribution to journalArticle

  32. Published

    Exhaustive search for snake-in-the-box codes

    Östergård, P. R. J. & Pettersson, V. H., 2015, In : Graphs and Combinatorics. 31, 4, p. 1019-1028

    Research output: Contribution to journalArticle

  33. Published

    Hypercube packings and their holes

    Kizhakkepallathu, A. M. & Östergård, P. R. J., 2015, In : Congressus Numerantium. 219, p. 89-95

    Research output: Contribution to journalArticle

  34. Published

    Independent domination of grids

    Crevals, S. & Östergård, P. R. J., 2015, In : Discrete Mathematics. 338, 8, p. 1379-1384

    Research output: Contribution to journalArticle

  35. Published

    On hypercube packings, blocking sets and a covering problem

    Kizhakkepallathu, A. M. & Östergård, P. R. J., 2015, In : Information Processing Letters. 115, 2, p. 141-145

    Research output: Contribution to journalArticle

  36. Published

    On the Classification of MDS codes

    Kokkala, J. I., Krotov, D. S. & Östergård, P. R. J., 2015, In : IEEE Transactions on Information Theory. 61, 12, p. 6485-6492

    Research output: Contribution to journalArticle

  37. Published

    Permutation codes invariant under isometries

    Janiszczak, I., Lempken, W., Östergård, P. R. J. & Staszewski, R., 2015, In : DESIGNS CODES AND CRYPTOGRAPHY. 75, 3, p. 497-507

    Research output: Contribution to journalArticle

  38. 2014
  39. Published

    A Note on Toeplitz' Conjecture

    Pettersson, V. H., Tverberg, H. A. & Östergård, P. R. J., 2014, In : Discrete and Computational Geometry. 51, 3, p. 722-728

    Research output: Contribution to journalArticle

  40. Published

    COUNTING HAMILTONIAN CYCLES IN BIPARTITE GRAPHS

    Haanpää, H. & Östergård, P. R. J., 2014, In : Mathematics of Computation. 83, 286, p. 979-995

    Research output: Contribution to journalArticle

  41. Published

    Large sets of t-designs over finite fields

    Braun, M., Kohnert, A., Östergård, P. R. J. & Wassermann, A., 2014, In : Journal of Combinatorial Theory Series A. 124, p. 195-202

    Research output: Contribution to journalArticle

  42. Published

    Om q-analogier

    Östergård, P. R. J., 2014, In : Arkhimedes. 3, p. 16-19

    Research output: Contribution to journalArticle

  43. Published

    On the Maximum Length of Coil-in-the-Box Codes in Dimension 8

    Östergård, P. R. J. & Pettersson, V. H., 2014, In : Discrete Applied Mathematics. 179, p. 193-200

    Research output: Contribution to journalArticle

  44. Published

    On the minimum size of 4-uniform hypergraphs without property B

    Östergård, P. R. J., 2014, In : Discrete Applied Mathematics. 163, 2, p. 199-204

    Research output: Contribution to journalArticle

  45. Published

    Switching in one-factorisations of complete graphs

    Kaski, P., de Souza Medeiros, A., Östergård, P. R. J. & Wanless, I. M., 2014, In : The Electronic Journal of Combinatorics. 21, 1, p. 24

    Research output: Contribution to journalArticle

  46. Published

    The Mendelsohn Triple Systems of Order 13

    Khatirinejad, M., Östergård, P. R. J. & Popa, A., 2014, In : Journal of Combinatorial Designs. 22, 1, p. 1-11

    Research output: Contribution to journalArticle

  47. 2013
  48. Published

    Enumerating Cube Tilings

    Kizhakkepallathu, A. M., Östergård, P. RJ. & Popa, A., 2013, In : Discrete and Computational Geometry. 50, 4, p. 1112-1122

    Research output: Contribution to journalArticle

  49. Published

    Enumerating Perfect Matchings in n-Cubes

    Östergård, P. R. J. & Pettersson, V., 2013, In : ORDER: A JOURNAL ON THE THEORY OF ORDERED SETS AND ITS APPLICATIONS. 30, 3, p. 821-835

    Research output: Contribution to journalArticle

  50. Published
  51. Published

    On the Shannon Capacity of Triangular Graphs

    Kizhakkepallathu, A. M., Östergård, P. RJ. & Popa, A., 2013, In : The Electronic Journal of Combinatorics. 20, 2, p. 27

    Research output: Contribution to journalArticle

  52. Published

    The quaternary complex Hadamard matrices of orders 10, 12 and 14

    Lampio, P., Szöllösi, F. & Östergård, P. R. J., 2013, In : Discrete Mathematics. 313, 2, p. 189-206

    Research output: Contribution to journalArticle

  53. 2012
  54. Published

    On triple systems and strongly regular graphs

    Behbahani, M., Lam, C. & Östergård, P. R. J., 2012, In : Journal of Combinatorial Theory Series A. 119, 7, p. 1414-1426

    Research output: Contribution to journalArticle

  55. Published

    Packing Costas arrays

    Dinitz, J. H., Östergård, P. R. J. & Stinson, D. R., 2012, In : JCMCC. 80, p. 385-403

    Research output: Contribution to journalArticle

  56. Published

    Steiner triple systems satisfying the 4-vertex condition

    Kaski, P., Khatirinejad, M. & Östergård, P. R. J., 2012, In : DESIGNS CODES AND CRYPTOGRAPHY. 62, 3, p. 323-330

    Research output: Contribution to journalArticle

  57. Published

    Switching codes and designs

    Östergård, P. R. J., 2012, In : Discrete Mathematics. 312, 3, p. 621-632

    Research output: Contribution to journalArticle

  58. 2011
  59. Published

    Classification of difference matrices over cyclic groups

    Lampio, P. & Östergård, P. R. J., 2011, In : Journal of Statistical Planning and Inference. 141, 3, p. 1194-1207

    Research output: Contribution to journalArticle

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