Discrete Dynamics in Nature and Society
Volume 2009 (2009), Article ID 629749, 8 pages
doi:10.1155/2009/629749
Research Article

Nonexistence and Radial Symmetry of Positive Solutions of Semilinear Elliptic Systems

Zhengce Zhang1 and Liping Zhu1,2

1College of Science, Xi'an Jiaotong University, Xi'an 710049, China
2College of Science, Xi'an University of Architecture & Technology, Xi'an 710054, China

Received 14 July 2009; Accepted 9 September 2009

Academic Editor: Leonid Shaikhet

Copyright © 2009 Zhengce Zhang and Liping Zhu. 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

Nonexistence and radial symmetry of positive solutions for a class of semilinear elliptic systems are considered via the method of moving spheres.