Geodesic
Positive periodic solutions of functional differential equations with infinite delay
Changxiu Song1
1 School of Applied Mathematics Guangdong University of Technology Guangzhou 510006, P.R. China
Annales Polonici Mathematici, Tome 93 (2008) no. 1, pp. 75-83

Voir la notice de l'article provenant de la source Institute of Mathematics Polish Academy of Sciences

The author applies a generalized Leggett–Williams fixed point theorem to the study of the nonlinear functional differential equation $$ x'(t)=-a(t,x(t))x(t)+f(t,x_t). $$ Sufficient conditions are established for the existence of multiple positive periodic solutions.
DOI : 10.4064/ap93-1-6
Keywords: author applies generalized leggett williams fixed point theorem study nonlinear functional differential equation a t sufficient conditions established existence multiple positive periodic solutions

Changxiu Song 1

1 School of Applied Mathematics Guangdong University of Technology Guangzhou 510006, P.R. China 
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Changxiu Song. Positive periodic solutions of
 functional differential equations with infinite delay. Annales Polonici Mathematici, Tome 93 (2008) no. 1, pp. 75-83. doi: 10.4064/ap93-1-6

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