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| EXISTENCE OF PERIODIC SOLUTIONS TO A p-LAPLACIAN NEUTRAL FUNCTIONAL DIFFERENTIAL EQUATION WITH VARIABLE PARAMETER | |
| 基金项目： | supported by Natural Science Foundation of Education Department of Anhui Province (No.KJ2010B353); Young Teacher’s Foundation of Anhui Normal University (No.2008xqn46) |
| 摘 要： | By the generalized Borsuk theorem in coincidence degree theory, a p-Laplacian neutral functional differential equation is studied. A new result on the existence of periodic solution is obtained. The interest is that some coeffcient in it is not a constant function and its sign can be changeable, which is different from that in the known literatures. |
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