We obtain the existence and multiplicity of positive -periodic solutions for the difference equations
where may be singular at . Using a fixed point theorem in cones, we extend recent results in the literature.
Submitted June 29, 2011. Published July 28, 2011.
Math Subject Classifications: 34G20.
Key Words: Positive periodic solutions; existence; nonexistence; difference equations; fixed point.
Show me the PDF file (217 KB), TEX file, and other files for this article.
| Yanqiong Lu |
Department of Mathematics
Northwest Normal University
Lanzhou, 730070, China
Return to the EJDE web page