Open Access Research Article

Multiple Positive Solutions for a Class of Concave-Convex Semilinear Elliptic Equations in Unbounded Domains with Sign-Changing Weights

Tsing-San Hsu

Author Affiliations

Center for General Education, Chang Gung University, Kwei-Shan, Tao-Yuan 333, Taiwan

Boundary Value Problems 2010, 2010:856932 doi:10.1155/2010/856932


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Received:8 September 2010
Accepted:18 October 2010
Published:21 October 2010

© 2010 Tsing-San Hsu.

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

We study the existence and multiplicity of positive solutions for the following Dirichlet equations: in , on , where , ( if ; if ), is a smooth unbounded domain in , , and satisfy suitable conditions, and maybe change sign in .

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