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Johannes Jahn is a retired „Universitätsprofessor“ formerly working at the Department of Mathematics of the University of Erlangen-Nürnberg (Germany). His research interests are theory and numerical methods in nonlinear optimization, vector optimization and set optimization.

He is the editor of the Springer series Vector Optimization
and a member of the editorial board of the journals

  • Journal of Optimization Theory and Applications
  • Computational Optimization and Applications
  • Minimax Theory and its Applications
  • Journal of Nonlinear and Variational Analysis
  • Ilirias Journal of Mathematics

Selected publications are

(a) books:

  • Vector Optimization – Theory, Applications, and Extensions (Springer, Berlin, 2004, 2011, 481 pages).
  • Introduction to the Theory of Nonlinear Optimization (Springer, Berlin, 1994, 1996, 2007, 292 pages).

(b) recent research papers:

  • „Karush-Kuhn-Tucker conditions in set optimization“,
    Journal of Optimization Theory and Applications 172 (2017) 707-725.
  • (withT.X.D. Ha) „Properties of Bishop-Phelps cones“,
    Journal of Nonlinear and Convex Aanalysis 172 (2017) 415-429.
  • (with M. Bischoff) „Economic objectives, uncertainties and decision making in the energy sector“,
    Journal of Business Economics 86 (2016) 85-102.
  • „Vectorization in set optimization“,
    Journal of Optimization Theory and Applications 167 (2015) 783-795.
  • „Directional derivative in set optimization with the set less order relation“,
    Taiwanese Journal of Mathematics 19 (2015) 737-757.
  • „A derivative-free descent method in set optimization“,
    Computational Optimization and Applications 60 (2015) 393-411.

(c) He is involved in two patents.