Abstract and Applied Analysis
Volume 2011 (2011), Article ID 534974, 16 pages
Research Article

Part-Metric and Its Applications to Cyclic Discrete Dynamic Systems

1College of Computer Science, Chongqing University, Chongqing 400044, China
2Mathematical Institute of the Serbian Academy of Sciences and Arts, Knez Mihailova 36/III, 11000 Beograd, Serbia
3Faculty of Electrical Engineering, Bulevar Kralja Aleksandra 73, 11120 Beograd, Serbia

Received 10 November 2010; Accepted 6 March 2011

Academic Editor: Allan C. Peterson

Copyright © 2011 Wanping Liu 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.


We adapt the part metric and use it in studying positive solutions of a certain family of discrete dynamic systems. Some examples are presented, and we also compare some results in the literature.