Geodesic
Positive periodic solutions of functional differential equations with infinite delay
Changxiu Song1
1School 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 
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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