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MULTIPLE PERIODIC SOLUTIONS TO SECOND ORDER FUNCTIONAL DIFFERENTIAL EQUATION WITH INFINITE DELAY |
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| Authors: | Lili Gao Deptof Mathand Physics Bengbu College Bengbu Anhui Lianglong Wang |
| Institution: | Lili Gao (Dept.of Math.and Physics,Bengbu College,Bengbu 233000,Anhui) Lianglong Wang (School of Math.and Computing Science,Anhui University,Hefei 230039) |
| Abstract: | This paper is concerned with the existence of positive periodic solutions to a second order functional differential equation with infinite delay.Under the appropriate conditions,some existence and multiplicity of positive periodic solutions are derived by an abstract fixed-point theorem. |
| Keywords: | functional differential equations positive periodic solutions fixed point theorem |
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