Publication Cover
Applicable Analysis
An International Journal
Volume 73, 1999 - Issue 3-4
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Original Articles

Periodic solutions of nonautonomous second order differential equations with a singularity

Pages 449-462 | Received 01 Dec 1998, Published online: 20 Jan 2011
 

Abstract

In this paper we consider general nonautonomous second order ordinary differential equations with singular nonlinearities. We previde sufficient conditions on the nonlinearity to prove the existence of at least one solution. We combine the topological degree with the method of upper and lower solutions.

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