scholarly journals Ekeland’s variational principle and fixed point theorems in partial b-metric spaces

2012 ◽  
Vol 20 (1) ◽  
pp. 101-112 ◽  
Author(s):  
Csaba Farkas

Abstract In this paper we prove a generalized version of the Ekeland variational principle, which is a common generalization of Zhong variational principle and Borwein Preiss Variational principle. Therefore in a particular case, from this variational principle we get a Zhong type variational principle, and a Borwein-Preiss variational principle. As a consequence, we obtain a Caristi type fixed point theorem.


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