Article ID Journal Published Year Pages File Type
4976319 Journal of the Franklin Institute 2009 12 Pages PDF
Abstract
In this paper, we use Leggett-Williams multiple fixed point theorem to obtain different sufficient conditions for the existence of at least three nonnegative periodic solutions of the first order functional differential equation of the formy′(t)=-a(t)y(t)+λf(t,y(h(t))).Some applications to mathematical ecological models are given.
Related Topics
Physical Sciences and Engineering Computer Science Signal Processing
Authors
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