A generalized variational principle in b-metric spaces

Authors

  • Csaba Farkas Babes Bolyai University Cluj Napoca, Romania
  • Andrea Éva Molnár Babes Bolyai University Cluj Napoca, Romania
  • Szilard Nagy

Keywords:

b-metric, Ekeland-type variational principles, Zhong-type variational principles, Caristi's fixed point theorem

Abstract

In this paper we establish and prove a generalized variational principle for b-metric spaces. As a consequence, we obtain a weak Zhong-type variational principle in b-metric spaces. We show the applicability of the mentioned generalized variational principle by presenting a Caristi-type fixed point theorem and an extension of the main result for bifunctions - both of them stated in b-metric spaces.

Author Biographies

  • Csaba Farkas, Babes Bolyai University Cluj Napoca, Romania
    Departament of Mathematics and Informatics
  • Andrea Éva Molnár, Babes Bolyai University Cluj Napoca, Romania
    Departament of Mathematics and Informatics

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Published

2014-10-13

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Section

Articoli