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Existence Results for Generalized Vector Equilibrium Problems with Multivalued Mappings via KKM Theory

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  • A. P. Farajzadeh
  • A. Amini-Harandi
  • D. O'Regan

Abstract

We first define upper sign continuity for a set-valued mapping and then we consider two types of generalized vector equilibrium problems in topological vector spaces and provide sufficient conditions under which the solution sets are nonempty and compact. Finally, we give an application of our main results. The paper generalizes and improves results obtained by Fang and Huang in (2005).

Suggested Citation

  • A. P. Farajzadeh & A. Amini-Harandi & D. O'Regan, 2008. "Existence Results for Generalized Vector Equilibrium Problems with Multivalued Mappings via KKM Theory," Abstract and Applied Analysis, Hindawi, vol. 2008, pages 1-8, January.
    • Handle: RePEc:hin:jnlaaa:968478
    DOI: 10.1155/2008/968478
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