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2020
1 Ghorpade, Sudhir R; Johnsen, Trygve.
A polymatroid approach to generalized weights of rank metric codes. Designs, Codes and Cryptography 2020 ;Volum 88.(12) s. 2531-2546
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2 Johnsen, Trygve; Verdure, Hugues.
Greedy weights for matroids. Designs, Codes and Cryptography 2020 ;Volum 89. s. 387-405
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3 Johnsen, Trygve; Verdure, Hugues.
Higher weight spectra of codes from Veronese threefolds. Journal of Pure and Applied Algebra 2020 ;Volum 225.(7) s. -
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4 Johnsen, Trygve; Verdure, Hugues.
Higher Weight Spectra of Veronese Codes. IEEE Transactions on Information Theory 2020 ;Volum 66.(6) s. 3538-3546
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2019
5 Johnsen, Trygve.
An introduction to codes and matroids. Foredrag for ansatte ved DTU Compute; 2019-04-03 - 2019-04-03
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6 Johnsen, Trygve.
Generalized weight of rank metric codes, a combinatorial approach. 13th Nordic Combinatorial Conference (Norcom 2019); 2019-08-05 - 2019-08-07
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7 Johnsen, Trygve.
Generalized weights of rank metric codes, and q-analogues of matroids. Polynomials and curves over finite fields; 2019-05-20 - 2019-05-22
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8 Johnsen, Trygve; Verdure, Hugues.
About greedy weights.. CACAAG seminar.; 2019-11-15 - 2019-11-18
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9 Johnsen, Trygve; Verdure, Hugues.
Relative profiles and extended weight polynomials of almost affine codes. Cryptography and Communications 2019 ;Volum 11.(5) s. 1009-1020
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2018
10 Johnsen, Trygve.
Algebraic geometric codes. CIMPA Research School: Commutative algebra with applications to Statistics and Coding Theory; 2018-07-02 - 2018-07-06
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11 Johnsen, Trygve.
Coding theory and algebraic properties of matroids. CACAAG seminar in Mathematics; 2018-09-25 - 2018-09-25
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12 Johnsen, Trygve.
Error-Correcting Codes and Stanley-Reisner Ideals of Matroids. 84'th Annual Conference of Indian Mathematical Society; 2018-11-27 - 2018-11-30
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2017
13 Johnsen, Trygve.
Demi-matroids and chains of block codes. ASGARD Math 2017; 2017-04-27 - 2017-04-28
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14 Johnsen, Trygve; Verdure, Hugues.
Flags of almost affine codes and the two-party wire-tap channel of type II. Designs, Codes and Cryptography 2017 s. 1-16
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15 Johnsen, Trygve; Verdure, Hugues.
Generalized Hamming Weights for Almost Affine Codes. IEEE Transactions on Information Theory 2017 ;Volum 63.(4) s. 1941-1953
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16 Johnsen, Trygve; Verdure, Hugues.
Relative generalized hamming weights and extended weight polynomials of almost affine codes. Lecture Notes in Computer Science (LNCS) 2017 ;Volum 10495 LNCS. s. 207-216
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2016
17 Johnsen, Trygve.
Hamming weights of almost affine codes and matroids. 12th Nordic Combinatorial Conference; 2016-06-13 - 2016-06-15
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18 Johnsen, Trygve.
Matroids and almost affine codes. ASGARD Math 2016; 2016-04-21 - 2016-04-22
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19 Johnsen, Trygve.
Stanley-Reisner rings associated to matroids and codes. Conference to the Memory of Anatoly A. Karatsuba on Number Theory and Applications; 2016-01-28 - 2016-01-30
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20 Johnsen, Trygve; Roksvold, Jan Nyquist; Verdure, Hugues.
A generalization of weight polynomials to matroids. Discrete Mathematics 2016 ;Volum 339.(2) s. 632-645
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21 Verdure, Hugues; Johnsen, Trygve.
Kung's bound for almost affine codes. Combinatorics 2016; 2016-05-29 - 2016-06-04
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2015
22 Johnsen, Trygve.
"Linear sections of Grassmannians, applications to coding theory.". Special Trimester on Algebraic Geometry; 2015-04-01 - 2015-06-30
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23 Johnsen, Trygve; Roksvold, Jan Nyquist; Verdure, Hugues.
Betti numbers associated to the facet ideal of a matroid. Bulletin of the Brazilian Mathematical Society, New Series 2015 ;Volum 45.(4) s. 727-744
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24 Johnsen, Trygve; Shiromoto, Keisuke; Verdure, Hugues.
A generalization of Kung’s theorem. Designs, Codes and Cryptography 2015 ;Volum 81. s. 169-178
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2014
25 Britz, Thomas; Johnsen, Trygve; Martin, James A..
Chains, demi-matroids, and profiles. IEEE Transactions on Information Theory 2014 ;Volum 60.(2) s. 986-991
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26 Johnsen, Trygve; Verdure, Hugues.
Stanley-Reisner resolution of constant weight linear codes. Designs, Codes and Cryptography 2014 ;Volum 72.(2) s. 471-481
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2013
27 Johnsen, Trygve.
About chains of codes, demi-matroids and profiles. The 11th Nordic Combinatorial Conference (NORCOM 11); 2013-06-17 - 2013-06-19
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28 Johnsen, Trygve.
About Hamming weights and Betti numbers of Stanley-Reisner rings associated to matroids. Nasjonalt algebramøte 2013; 2013-11-07 - 2013-11-08
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29 Johnsen, Trygve.
Linear codes and Stanley-Reisner rings associated to matroids. International Conference on Algebraic Geometry and Coding Theory; 2013-12-02 - 2013-12-06
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30 Johnsen, Trygve.
Om årets vinner av Abelprisen, Pierre Deligne, og hans arbeider. Norsk matematikkråds årsmøte; 2013-09-25 - 2013-09-27
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31 Johnsen, Trygve; Verdure, Hugues.
Hamming weights and Betti numbers of Stanley-Reisner rings associated to matroids. Applicable Algebra in Engineering, Communication and Computing 2013 ;Volum 24.(1) s. 73-93
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2012
32 Britz, Thomas; Johnsen, Trygve; Mayhew, Dillon; Shiromoto, Keisuke.
Wei-type duality theorems for matroids. Designs, Codes and Cryptography 2012 ;Volum 62.(3) s. 331-341
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33 Johnsen, Trygve.
Codes and Matroid Structures. ALGA 2012 (konferanse i algebra); 2012-08-13 - 2012-08-17
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2011
34 Fløystad, Gunnar; Johnsen, Trygve; Knutsen, Andreas Leopold.
Combinatorial Aspects of Commutative Algebra and Algebraic Geometry: The Abel Symposium 2009. Springer 2011 (ISBN 3642194915) ;Volum 6.198 s. Abel Symposia(-)
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35 Johnsen, Trygve.
Algebraic-geometric codes, and matroid structures. Algebraic Geometry with a view towards applications; 2011-01-17 - 2011-06-15
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36 Knutsen, Andreas Leopold; Johnsen, Trygve; Fløystad, Gunnar.
Combinatorial aspects of commutative algebra and algebraic geometry. Proceedings of the Abel Symposium held in Voss, June 1–4, 2009. Springer 2011 (ISBN 978-3-642-19491-7) 174 s. Abel Symposia(6)
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2010
37 Hansen, Johan P.; Johnsen, Trygve; Ranestad, Kristian.
Grassmann codes and Schubert unions. I: Arithmetic, Geometry and Coding Theory (ACCT 2005). Paris: Soc. Math. France Paris 2010 ISBN 978-2-85629-279-2. s. 103-123
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38 Johnsen, Trygve.
Koder fra algebraisk geometri. Nasjonalt algebramøte; 2010-11-10 - 2010-11-11
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39 Johnsen, Trygve; Rasmussen, Nils Henry.
Scroll codes over curves of higher genus. Applicable Algebra in Engineering, Communication and Computing 2010 ;Volum 21.(5) s. 397-415
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2009
40 Hana, Gert Monstad; Johnsen, Trygve.
Rational Curves on a general heptic fourfold. Bulletin of the Belgian Mathematical Society Simon Stevin 2009 ;Volum 16.(5) s. 861-885
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41 Hana, Gert Monstad; Johnsen, Trygve.
Rational curves on a general heptic fourfold. Bulletin of the Belgian Mathematical Society Simon Stevin 2009 ;Volum 16.(5) s. 861-885
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42 Johnsen, Trygve.
Demi-matroids. Norsk kryptoseminar 2009; 2009-10-22 - 2009-10-23
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43 Johnsen, Trygve.
Om kodeteori. 60-årsjubileum for Matematisk institutt, UiB; 2009-05-08 - 2009-05-08
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2008
44 Hitching, George H.; Johnsen, Trygve; og 42 andre, fra mange land; Chaumine, Jean; Hirschfeld, James; Rolland, Robert.
Algebraic Geometry and Its Applications. World Scientific 2008 (ISBN 981-279-342-9) ;Volum 5.513 s. Series on Number Theory and its Applications(Helt volum)
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45 Hitching, George H.; Johnsen, Trygve.
Decoding of scroll codes. I: Algebraic Geometry and Its Applications. World Scientific 2008 ISBN 981-279-342-9. s. 294-314
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46 Johnsen, Trygve.
Codes from algebraic varieties. Joint Mathematical Weekend; 2008-02-29 - 2008-03-02
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47 Johnsen, Trygve.
Om matroider og Stanley-Reisner ringer. Nasjonalt algebramøte; 2008-10-30 - 2008-10-31
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2007
48 Hana, Gert Monstad; Johnsen, Trygve.
Scroll codes. Designs, Codes and Cryptography 2007 ;Volum 45.(3) s. 365-377
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49 Hansen, Johan Peder; Johnsen, Trygve; Ranestad, Kristian.
Schubert unions in Grassmann varieties. Finite Fields and Their Applications 2007 ;Volum 13.(4) s. 738-750
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2005
50 Hansen, Johan P.; Johnsen, Trygve; Ranestad, Kristian.
Schubert Unions in Grassmann Varieties. : Math. Archive 2005 37 s. math.AG/0503121(-)
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