Henrik Stetkær

  1. 2018
  2. Published

    Extensions of the Sine Addition Formula on Monoids. / Ebanks, Bruce; Stetkær, Henrik.

    In: Results in Mathematics, Vol. 73, No. 3, 119, 01.09.2018.

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

  3. E-pub ahead of print

    Extensions of the sine addition law on groups. / Stetkær, Henrik.

    In: Aequationes Mathematicae, 01.01.2018.

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

  4. 2017
  5. Published

    Kannappan’s functional equation on semigroups with involution. / Stetkær, Henrik.

    In: Semigroup Forum, Vol. 94, No. 1, 01.02.2017, p. 17-30.

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

  6. Published

    A note on Wilson’s functional equation. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 91, No. 5, 2017, p. 945-947.

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

  7. Published

    The kernel of the second order Cauchy difference on semigroups. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 91, No. 2, 2017, p. 279–288.

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

  8. 2016
  9. Published

    The cosine addition law with an additional term. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 90, No. 6, 12.2016, p. 1147–1168.

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

  10. Published

    A link between Wilson’s and d’Alembert’s functional equations. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 90, No. 2, 2016, p. 407-409.

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

  11. Published

    Van Vleck’s functional equation for the sine. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 90, No. 1, 2016, p. 25-34.

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

  12. 2015
  13. Published

    A Variant of d'Alembert's Functional Equation. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 89, No. 3, 2015, p. 657-662.

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

  14. Published

    Complex analysis : An invitation. / Rao, Murali; Stetkær, Henrik; Fournais, Søren; Møller, Jacob Schach.

    2 ed. Singapore : World Scientific, 2015. 414 p.

    Research output: Book/anthology/dissertation/reportBookEducation

  15. Published

    On Wilson's functional equations. / Ebanks, Bruce; Stetkaer, Henrik.

    In: Aequationes Mathematicae, Vol. 89, No. 2, 2015, p. 339-354.

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

  16. Published

    d'Alembert's other functional equation. / Ebanks, Bruce; Stetkaer, Henrik.

    In: Publicationes mathematicae-Debrecen, Vol. 87, No. 3-4, 6, 2015, p. 319-349.

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

  17. Published

    d’Alembert’s other functional equation on monoids with an involution. / Ebanks, Bruce; Stetkær, Henrik.

    In: Aequationes Mathematicae, 2015, p. 187-206.

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

  18. 2013
  19. Published

    D'Alembert's functional equation on groups. / Stetkær, Henrik.

    Recent developments in functional equations and inequalities: Selected topics. Warszawa : Polish Academy of Sciences, Institute of Mathematics, 2013. p. 173-191.

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

  20. Published

    Functional equations on groups. / Stetkær, Henrik.

    World Scientific, 2013. 378 p.

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

  21. 2010
  22. Published

    Continuous cocycles on locally compact groups: II. / Ebanks, Bruce; Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 80, No. 1-2, 2010, p. 57-83.

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

  23. 2009
  24. Published

    Continuous cocycles on locally compact groups. / Ebanks, Bruce; Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 78, No. 1-2, 2009, p. 123-145.

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

  25. Published

    Properties of d'Alembert functions. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 77, No. 3, 2009, p. 281 - 301.

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

  26. 2008
  27. Published

    Continuous cocycles on locally compact groups. / Ebanks, Bruce; Stetkær, Henrik.

    Århus : Department of Mathematical Sciences, Aarhus University, 2008. p. 1-25.

    Research output: Working paperResearch

  28. 2007
  29. Published

    Properties of d'Alembert functions. / Stetkær, Henrik.

    Århus : Department of Mathematical Sciences , University of Aarhus, 2007.

    Research output: Working paperResearch

  30. Published

    Representations, convolution square roots and spherical vectors. / Stetkær, Henrik.

    In: Journal of Functional Analysis, Vol. 252, 2007, p. 1-33.

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

  31. 2006
  32. Published

    On the quadratic functional equation on groups. / Stetkær, Henrik.

    Aequationes Mathematicae. 71. ed. 2006. p. 88.

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

  33. Published

    On the quadratic functional equation on groups. / Friis, Peter de Place; Stetkær, Henrik.

    In: Publ. Math. Debrecen, Vol. 69, No. 1-2, 2006, p. 65-93.

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

  34. Published
  35. Published

    d'Alembert's and Wilson's equations on Lie groups by P. de Place Friis. / Stetkær, Henrik.

    In: Zentralblatt für Mathematik, No. Zbl 1060.39026, 2006.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  36. 2005
  37. Published

    Functional equations and matrix-valued spherical functions. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 69, 2005, p. 271-292.

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

  38. Published

    Operator-valued spherical functions. / Stetkær, Henrik.

    In: Journal of Functional Analysis, Vol. 224, 2005, p. 338-351.

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

  39. 2004
  40. Published

    D'Alembert's and Wilson's functional equations on step 2 nilpotent groups. / Stetkær, Henrik.

    In: Aequationes Mathematicae, Vol. 67, No. 3, 2004, p. 241-262.

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

  41. Published

    On a variant of Wilson's functional equation on groups. / Stetkær, H.

    In: Aequationes Mathematicae, Vol. 68, 2004, p. 160-176.

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

  42. Published

    On operator-valued spherical functions. / Stetkær, H.

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

    Research output: Working paperResearch

  43. Published

    On the quadratic functional equation on groups. / Friis, P.d.P.; Stetkær, H.

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

    Research output: Working paperResearch

  44. 2003
  45. Published

    On Jensen's functional equation on groups. / Stetkær, H.

    In: Aequationes Mathematicae, Vol. 66, 2003, p. 100-118.

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

  46. Published

    On a variant of Wilson's functional equation on groups. / Stetkær, H.

    Århus : MaPhySto, University of Aarhus, 2003.

    Research output: Working paperResearch

  47. Published

    Review of G. Maksa: "Jensen's equation and bisymmetry" : published in Publ. Math. vol. 61, no.3-4, 663-669 (2002). / Stetkær, H.

    In: Zentralblatt MATH, 2003.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  48. Published

    Review of R. Badora: "On approximate ring homomorphisms" : published in J. Math. Anal. Appl. vol. 276, no. 2, 589-597 (2002). / Stetkær, H.

    In: Zentralblatt MATH, 2003.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  49. Published

    Wilson's functional equation on metabelian groups. / Stetkær, Henrik.

    The Fortieth International Symposium on Functional Equations. 2003. p. 302.

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

  50. 2002
  51. Published

    On Jensen's functional equation on groups. / Stetkær, H.

    The Thirty-ninth International Symposium on Functional Equations. 2002. p. 183.

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

  52. Published

    On the Cosine-Sine Functional Equation on Groups. / Friis, P. de Place; Stetkær, H.

    In: Aequationes Mathematicae, Vol. 64, No. 1-2, 2002, p. 145-164.

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

  53. Published

    Review of E. Shulman: "A motion with a permanent segment-areal speed and the Levi-Cività functional equation : published in Aequationes Math., vol. 62, no. 3, 297-302 (2001). / Stetkær, H.

    In: Zentralblatt MATH, 2002.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  54. Published

    Review of H. Fripertinger; J. Schwaiger: "Some applications of functional equations in astronomy" : published in Gazer Math. Ber., vol. 344, 1-6 (2001). / Stetkær, H.

    In: Zentralblatt MATH, 2002.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  55. Published

    Review of J. A. Baker: "Distributional methods for functional equations" : published in Aequations Math. vol. 62, no. 1-2, 136-142 (2001). / Stetkær, H.

    In: Zentralblatt MATH, 2002.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  56. Published

    Review of J. Chudziak: "On a property of involutions" : published in Grazer Maht. Ber. vol. 344, 67-68 (2001). / Stetkær, H.

    In: Zentralblatt MATH, 2002.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  57. Published

    Review of M. Akkouchi: "A note on d'Alembert's functional equation" : published in Ann. Math. Blaise Pascal vol. 8, no. 1, 1-6 (2001). / Stetkær, H.

    In: Zentralblatt MATH, 2002.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperLiterature reviewCommunication

  58. Published

    d'Alembert's and Wilson's functional equations on step 2 nilpotent group. / Stetkær, Henrik.

    Århus : Department of Mathematical Sciences , University of Aarhus, 2002.

    Research output: Working paperResearch

  59. 2001
  60. Published

    Functional equations and spherical functions. / Stetkær, Henrik.

    Abstracts of papers presented to the American Mathematical Society, vol. 22, nr. 1. 2001. p. 92.

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

  61. Published

    General trigonometric functional equations. / Stetkær, Henrik.

    The Thirty-eighth International Symposium on Functional Equations. 2001. p. 296.

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

  62. Published

    On Jensens functional equation on groups. / Stetkær, H.

    Århus : Department of Mathematical Sciences , University of Aarhus, 2001.

    Research output: Working paperResearch

  63. Published

    On multiplicative maps. / Stetkær, Henrik.

    In: Semigroup Forum, Vol. 63, No. 3, 2001, p. 466-468.

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