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2020

Constructions of maximum few-distance sets in euclidean spaces

Östergård, P. R. J. & Szollosi, F., 1 Jan 2020, In : Electronic Journal of Combinatorics. 27, 1, P1.23.

Research output: Contribution to journalArticleScientificpeer-review

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1 Citation (Scopus)
20 Downloads (Pure)

Kirkman triple systems with subsystems

Kokkala, J. I. & Östergård, P. R. J., Sep 2020, In : Discrete Mathematics. 343, 9, 111960.

Research output: Contribution to journalArticleScientificpeer-review

On the structure of small strength-2 covering arrays

Kokkala, J., Meagher, K., Naserasr, R., Nurmela, K. J., Östergård, P. R. J. & Stevens, B., Jan 2020, In : Journal of Combinatorial Designs. 28, 1, p. 5-24

Research output: Contribution to journalArticleScientificpeer-review

ORDERLY GENERATION OF BUTSON HADAMARD MATRICES

Lampio, P. H. J., Ostergard, P. R. J. & Szollosi, F., Jan 2020, In : Mathematics of Computation. 89, 321, p. 313-331 19 p.

Research output: Contribution to journalArticleScientificpeer-review

2019

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 journalArticleScientificpeer-review

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 journalArticleScientificpeer-review

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83 Downloads (Pure)

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 journalArticleScientificpeer-review

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1 Citation (Scopus)
71 Downloads (Pure)
2018

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 journalArticleScientificpeer-review

6 Citations (Scopus)

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 journalArticleScientificpeer-review

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3 Citations (Scopus)
1 Downloads (Pure)

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 journalArticleScientificpeer-review

6 Citations (Scopus)

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 journalArticleScientificpeer-review

5 Citations (Scopus)

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 journalArticleScientificpeer-review

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 journalArticleScientificpeer-review

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105 Downloads (Pure)

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 journalArticleScientificpeer-review

2017

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 journalArticleScientificpeer-review

1 Citation (Scopus)

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 journalArticleScientificpeer-review

3 Citations (Scopus)

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 journalArticleScientificpeer-review

2 Citations (Scopus)

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 journalArticleScientificpeer-review

12 Citations (Scopus)

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 journalArticleScientificpeer-review

2016

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 journalArticleScientificpeer-review

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 journalArticleScientificpeer-review

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31 Citations (Scopus)
310 Downloads (Pure)

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 journalArticleScientificpeer-review

1 Citation (Scopus)

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 journalArticleScientificpeer-review

2015

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 journalArticleScientificpeer-review

4 Citations (Scopus)

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 journalArticleScientificpeer-review

7 Citations (Scopus)

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 journalArticleScientificpeer-review

1 Citation (Scopus)

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 journalArticleScientificpeer-review

Hypercube packings and their holes

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

Research output: Contribution to journalArticleScientificpeer-review

Independent domination of grids

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

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

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 journalArticleScientificpeer-review

3 Citations (Scopus)

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 journalArticleScientificpeer-review

13 Citations (Scopus)

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 journalArticleScientificpeer-review

11 Citations (Scopus)
2014

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 journalArticleScientificpeer-review

1 Citation (Scopus)

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 journalArticleScientificpeer-review

3 Citations (Scopus)

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 journalArticleScientificpeer-review

14 Citations (Scopus)

Om q-analogier

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

Research output: Contribution to journalArticleProfessional

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 journalArticleScientificpeer-review

1 Citation (Scopus)

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 journalArticleScientificpeer-review

7 Citations (Scopus)

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 journalArticleScientificpeer-review

6 Citations (Scopus)

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 journalArticleScientificpeer-review

2 Citations (Scopus)
2013

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 journalArticleScientificpeer-review

3 Citations (Scopus)

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 journalArticleScientificpeer-review

2 Citations (Scopus)

On optimal binary codes with unbalanced coordinates, Applicable Algebra in Engineering

Östergård, P. R. J., 2013, In : APPLICABLE ALGEBRA IN ENGINEERING COMMUNICATION AND COMPUTING. 24, 3-4, p. 197-200

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

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 journalArticleScientificpeer-review

1 Citation (Scopus)

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 journalArticleScientificpeer-review

5 Citations (Scopus)
2012

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 journalArticleScientificpeer-review

3 Citations (Scopus)

Packing Costas arrays

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

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

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 journalArticleScientificpeer-review

1 Citation (Scopus)

Switching codes and designs

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

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)
2011

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 journalArticleScientificpeer-review

3 Citations (Scopus)