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  • Research Article
  • Open Access

Maximality Principle and General Results of Ekeland and Caristi Types without Lower Semicontinuity Assumptions in Cone Uniform Spaces with Generalized Pseudodistances

Fixed Point Theory and Applications20102010:175453

  • Received: 31 December 2009
  • Accepted: 8 March 2010
  • Published:


Our aim is twofold: first, we want to introduce a partial quasiordering in cone uniform spaces with generalized pseudodistances for giving the general maximality principle in these spaces. Second, we want to show how this maximality principle can be used to obtain new and general results of Ekeland and Caristi types without lower semicontinuity assumptions, which was not done in the previous publications on this subject.


  • General Result
  • Maximality Principle
  • Differential Geometry
  • Lower Semicontinuity
  • Computational Biology

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Authors’ Affiliations

Department of Nonlinear Analysis, Faculty of Mathematics and Computer Science, University of Łódź, Banacha 22, 90-238 Łódź, Poland


© K.Włodarczyk and R. Plebaniak. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.