Abstract and Applied Analysis
Volume 2011 (2011), Article ID 561245, 13 pages
http://dx.doi.org/10.1155/2011/561245
Research Article

Fixed Points of Geraghty-Type Mappings in Various Generalized Metric Spaces

Dušan Ðukić,1 Zoran Kadelburg,2 and Stojan Radenović1

1Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, 11120 Beograd, Serbia
2Faculty of Mathematics, University of Belgrade, Studentski trg 16, 11000 Beograd, Serbia

Received 11 June 2011; Accepted 10 September 2011

Academic Editor: Allan C. Peterson

Copyright © 2011 Dušan Ðukić et al. 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.

Abstract

Fixed point theorems for mappings satisfying Geraghty-type contractive conditions are proved in the frame of partial metric spaces, ordered partial metric spaces, and metric-type spaces. Examples are given showing that these results are proper extensions of the existing ones.