Now showing items 1-2 of 2

    • Closing the duality gap in linear vector optimization 

      Hamel, AH; Heyde, F; Löhne, A; Tammer, C; Winkler, K (2004)
      Using a set-valued dual cost function we give a new approach to duality theory for linear vector optimization problems. We develop the theory very close to the scalar case. Especially, in contrast to known results, we avoid ...
    • Minimal element theorems and Ekeland's principle with set relations 

      Hamel, AH; Löhne, A (YOKOHAMA PUBL, 2006)
      We present two existence principles for minimal points of subsets of the product space X × 2Y, where X stands for a separated uniform space and Y a topological vector space. The two principles are distinct with respect to ...