Johan P. Hansen

  1. 2018
  2. Published

    Tal og polynomier : Begreber, metoder, resultater, kodning og kryptografi. / Hansen, Johan Peder.

    Tal og Polynomier: Begreber, metoder, resultater, kodning og kryptografi. ed. / Henrik Jensen. Aarhus : Aarhus Universitetsforlag, 2018.

    Research output: Contribution to book/anthology/report/proceedingBook chapterEducationpeer-review

  3. Published

    Toric Varieties and Codes, Error-correcting Codes, Quantum Codes, Secret Sharing and Decoding. / Hansen, Johan P.

    In: arXiv, 20.08.2018.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  4. 2017
  5. Published

    Asymmetric Quantum Codes on Toric Surfaces. / Hansen, Johan P.

    In: arXiv, 09.08.2017.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch

  6. Submitted

    Toric Codes, Multiplicative Structure and Decoding. / Hansen, Johan Peder.

    In: Discrete Mathematics, 20.02.2017.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  7. Published

    Asymmetric Quantum Codes on Toric Surfaces. / Hansen, Johan Peder.

    2017.

    Research output: Working paperResearchpeer-review

  8. Published

    SECRET SHARING SCHEMES WITH STRONG MULTIPLICATION AND A LARGE NUMBER OF PLAYERS FROM TORIC VARIETIES. / Hansen, Johan Peder.

    Proceedings of Arithmetic, Geometry, Cryptography and Coding Theory (AGCT-15). Vol. 686 Contemporary Mathematics. ed. American Mathematical Society, 2017.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  9. Published

    Secret sharing schemes with strong multiplication and a large number of players from toric varieties. / Hansen, Johan P.

    Contemporary Mathematics. Vol. 686 American Mathematical Society, 2017. p. 171-185.

    Research output: Contribution to book/anthology/report/proceedingBook chapterResearchpeer-review

  10. 2016
  11. Published

    Kryptering kan vinde over kvante-computere. / Hansen, Johan Peder.

    2016, Slides.

    Research output: Other contributionNet publication - Internet publicationCommunication

  12. Published

    Matematik. Alt hvad du bør vide om naturvidenskab - eller næsten. / Hansen, Johan Peder.

    2016, Slides.

    Research output: Other contributionNet publication - Internet publicationCommunication

  13. 2015
  14. Published

    Forms and Linear Network Codes. / Hansen, Johan Peder.

    In: International Journal of Mathematics and Computer Science, Vol. 10, No. 2, 01.09.2015, p. 227-238.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  15. Published

    Riemann-Roch Spaces and Linear Network Codes. / Hansen, Johan P.

    arXiv.org, 2015.

    Research output: Working paperResearch

  16. Published

    Riemann-Roch Spaces and Linear Network Codes. / Hansen, Johan P.

    http://arxiv.org/abs/1503.02386. ed. arXiv.org, 2015.

    Research output: Working paperResearch

  17. Published

    Riemann-Roch Spaces and Linear Network Codes. / Hansen, Johan P.

    In: International Journal of Mathematics and Computer Science, Vol. 10, No. 1, 2015, p. 1-11.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  18. 2014
  19. Published

    Secret Sharing Schemes with a large number of players from Toric Varieties. / Hansen, Johan P.

    arXiv.org, 2014. p. 1410.4378.

    Research output: Working paperResearch

  20. 2013
  21. Published

    Forms and Linear Network Codes. / Hansen, Johan P.

    arXiv.org, 2013.

    Research output: Working paperResearch

  22. Published

    Matematikken navigation. Kronometer - Mercator - Hyperbel. GPS/Galileo. / Hansen, Johan P.

    2013, .

    Research output: Other contributionNet publication - Internet publicationCommunication

  23. Published

    Osculating Spaces of Varieties and Linear Network Codes. / Hansen, Johan P.

    Algebraic Informatics: 5th International Conference, CAI 2013. ed. / Traian Muntean; Dimitrios Poulakis; Robert Rolland. Springer, 2013. p. 83-88.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  24. Published

    Primtalsmysterier : Fra Euklid til NemID. / Hansen, Johan P.

    Matematiske mysterier: Historien, forklaringer og løsninger. ed. / Hans Anton Salomonsen. Aarhus : Aarhus Universitetsforlag, 2013. p. 55-82.

    Research output: Contribution to book/anthology/report/proceedingBook chapterCommunication

  25. Published

    Quantum Codes from Toric Surfaces. / Hansen, Johan P.

    In: I E E E Transactions on Information Theory, Vol. 59, No. 2, 2013, p. 1188-1192.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  26. 2012
  27. Published

    Osculating Spaces of Varieties and Linear Network Codes. / Hansen, Johan P.

    arXiv.org, 2012.

    Research output: Working paperResearch

  28. Published
  29. Published

    Matematikken bag kryptering og signering - RSA. / Hansen, Johan P.

    2012, Beamer OH.

    Research output: Other contributionNet publication - Internet publicationCommunication

  30. Published

    Matematikken bag satellitnavigation. GPS - GLONASS - GALILEO. / Hansen, Johan P.

    2012, .

    Research output: Other contributionNet publication - Internet publicationCommunication

  31. Published

    Matematik. Hvad enhver bør vide om naturvidenskab - næsten. / Hansen, Johan P.

    2012, .

    Research output: Other contributionNet publication - Internet publicationCommunication

  32. Published

    Tal og mængder : Begreber, metoder og resultater. / Hansen, Johan P.

    Aarhus : Aarhus Universitetsforlag, 2012. 118 p.

    Research output: Book/anthology/dissertation/reportBookEducationpeer-review

  33. 2011
  34. Published

    Deling - primtal - kryptografi. / Hansen, Johan Peder.

    2011.

    Research output: Working paperEducation

  35. Published

    Mathematics and statistics : Computer science, economics, engineering, genetics, health, physics. / Hansen, Johan Peder.

    Public Service Review: European Science and Technology 11. Vol. 11 Newcastle-under-Lyme, Staffordshire, UK : Public service, 2011. p. 145.

    Research output: Contribution to book/anthology/report/proceedingReport chapterCommissioned

  36. Published

    Diofantiske ligninger. Fermats sidste sætning. / Hansen, Johan P.

    2011, .

    Research output: Other contributionNet publication - Internet publicationCommunication

  37. 2010
  38. Published
  39. 2009
  40. Published

    Grassmann codes and Schubert unions. / Hansen, Johan Peder; Johnsen, Trygve; Ranestad, Kristian.

    In: Seminaires et Congres, 2009, p. 103-123.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperConference articleResearchpeer-review

  41. 2007
  42. Published

    Schubert unions in Grassman varieties. / Hansen, Johan Peder; Johnsen, Trygve; Ranestad, Kristian.

    In: Finite Fields and Their Applications, Vol. 13, No. 4, 2007, p. 738-750.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  43. 2005
  44. Published

    Schubert Unions in Grassmann Varieties. / Hansen, Johan Peder; Johnsen, T.; Ranestad, K.

    Cornell University, USA : arXiv.org, 2005. p. 1-37.

    Research output: Working paperResearch

  45. 2004
  46. Published

    Toric Surfaces and Codes, Techniques and Examples. / Hansen, J.P.

    Århus : Department of Mathematical Sciences , University of Aarhus, 2004.

    Research output: Working paperResearch

  47. 2003
  48. Published

    Linkage and Codes on Complete Intersections. / Hansen, Johan P.

    In: Applicable Algebra in Engineering, Communication and Computing, Vol. 14, No. 3, 2003, p. 175-185.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  49. 2002
  50. Published

    Algebra og talteori. / Hansen, J.P.; Spalk, Henrik Gadegaard.

    København : Gyldendal, 2002. 144 p.

    Research output: Book/anthology/dissertation/reportBookEducation

  51. Published

    Toric Varieties Hirzebruch Surfaces and Error-Correcting Codes. / Hansen, J.P.

    In: Applicable Algebra in Engineering, Communication and Computing, Vol. 13, No. 4, 2002, p. 289-300.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  52. 2001
  53. Published

    Dependent rational points on curves over finite fields - Lefschetz theorems and exponential sums. / Hansen, J.P.

    WCC2001, International Workshop on Coding and Cryptography. ed. / Daniel Augot; Claude Carlet. 2001. p. 297-309.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  54. Published

    Lower Bounds for Dynamic Algebraic Problems. / Frandsen, Gudmund Skovbjerg; Hansen, J.P.; Miltersen, Peter Bro.

    In: Information and Computation, Vol. 171, No. 2, 2001, p. 333-349.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  55. 2000
  56. Published

    Dependent rational points on curves over finite fields - Lefschetz theorems and exponential sums. / Hansen, Johan P.

    In: Electronic Notes in Discrete Mathematics, Vol. 6, 01.12.2000, p. 1-13.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  57. Published

    Toric surfaces and error-correcting codes. / Hansen, Johan P.

    Coding theory, cryptography and related areas: proceedings of an international conference on coding theory, cryptography and related areas (Guanajuato, 1998). ed. / J. Buchmann; T. Hoeholdt; H. Stichtenoth; H. Tapia-Recillas. Springer, 2000. p. 132-142.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  58. 1999
  59. Published

    Lower bounds for dynamic algebraic problems. / Frandsen, Gudmund Skovbjerg; Hansen, Johan Peder; Miltersen, Peter Bro.

    In: Lecture Notes in Computer Science, 1999, p. 362-372.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperConference articleResearchpeer-review

  60. 1998
  61. Published

    Determination of error values for algebraic-geometry codes and the Forney formula. / Hansen, Johan P.; Jensen, Helge Elbrønd; Kötter, Ralf.

    In: I E E E Transactions on Information Theory, Vol. 44, No. 5, 1998, p. 1881-1886.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  62. Published

    Toric Surfaces and Codes. / Hansen, Johan P.

    Information Theory Workshop. IEEE, 1998. p. 42-43.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  63. 1994
  64. Published

    Points in uniform position and maximum distance separable codes. / Hansen, Johan P.

    Zero-dimensional schemes: proceedings of the international conference held in Ravello, Italy, June 8-13, 1992. De Gruyter, 1994. p. 205-211.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  65. 1993
  66. Published

    Automorphism groups of Ree type Deligne-Lusztig curves and function fields. / Hansen, Johan P.; Pedersen, Jens Peter.

    In: Journal fuer die Reine und Angewandte Mathematik, Vol. 440, 1993, p. 99-109.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  67. 1992
  68. Published

    Deligne-Lusztig varieties and group codes. / Hansen, Johan P.

    In: Lecture Notes in Mathematics, 1992, p. 63-81.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperConference articleResearchpeer-review

  69. 1991
  70. Published

    Group codes and Deligne-Lusztig varieties. / Hansen, Johan P.

    IEEE International Symposium on Information Theory 1991. IEEE, 1991. p. 42.

    Research output: Contribution to book/anthology/report/proceedingConference abstract in proceedingsResearch

  71. 1990
  72. Published

    Group codes on certain algebraic curves with many rational points. / Hansen, Johan P.; Stichtenoth, Henning.

    In: Applicable Algebra in Engineering, Communication and Computing, Vol. 1, No. 1, 1990, p. 67-77.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  73. 1987
  74. Published

    Codes on the Klein quartic, ideals, and decoding. / Hansen, Johan P.

    In: I E E E Transactions on Information Theory, Vol. 33, No. 6, 1987, p. 923-925.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  75. 1986
  76. Published

    Double points of compositions of projections. / Hansen, Johan P.; Vyrdal, Simon.

    In: Mathematica Scandinavica, Vol. 58, No. 1, 1986, p. 119-124.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  77. Published

    Higher order singularities of morphisms to projective space. / Hansen, Johan P.

    In: Proceedings of the American Mathematical Society, Vol. 97, No. 2, 1986, p. 226-232.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  78. 1984
  79. Published

    Double-points of compositions. / Hansen, Johan P.

    In: Journal fuer die Reine und Angewandte Mathematik, Vol. 352, 1984, p. 71-80.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  80. 1983
  81. Published

    A connectedness theorem for flagmanifolds and Grassmannians. / Hansen, Johan.

    In: American Journal of Mathematics, Vol. 105, No. 3, 1983, p. 633-639.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  82. 1981
  83. Published

    Connectedness theorems in algebraic geometry. / Hansen, Johan P.

    18th Scandinavian Congress of Mathematicians proceedings, 1980. ed. / Erik Balslev. Birkhäuser Verlag, 1981. p. 336-346.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  84. 1979
  85. Published

    A connectedness theorem for projective varieties, with applications to intersections and singularities of mappings. / Fulton, William; Hansen, Johan.

    In: Annals of Mathematics, Vol. 110, No. 1, 1979, p. 159-166.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review