scholarly journals Local completeness, drop theorem and Ekeland's variational principle

2005 ◽  
Vol 311 (1) ◽  
pp. 23-39 ◽  
Author(s):  
Jing-Hui Qiu
2012 ◽  
Vol 28 (2) ◽  
pp. 257-264
Author(s):  
GEORGIANA GOGA ◽  

The purpose of this paper is to present some remarks on Ume’s new concept of distance called u-distance, which generalizes w-distance and Suzuki’s t-distance. As an application of the u-distance version of Ekeland’s variational principle, we establish a generalized flower petal theorem.


Author(s):  
Claudianor O. Alves ◽  
Ziqing Yuan ◽  
Lihong Huang

Abstract This paper concerns with the existence of multiple solutions for a class of elliptic problems with discontinuous nonlinearity. By using dual variational methods, properties of the Nehari manifolds and Ekeland's variational principle, we show how the ‘shape’ of the graph of the function A affects the number of nontrivial solutions.


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