Existence of triple positive periodic solutions of a functional differential equation depending on a parameter.
Liu, Xi-Lan, Zhang, Guang, Cheng, Sui Sun (2004)
Abstract and Applied Analysis
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Liu, Xi-Lan, Zhang, Guang, Cheng, Sui Sun (2004)
Abstract and Applied Analysis
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Benkhalti, Rachid, Ezzinbi, Khalil (2004)
Journal of Applied Mathematics and Stochastic Analysis
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Cheng-Jun Guo, Gen Qiang Wang, Sui-Sun Cheng (2006)
Archivum Mathematicum
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By means of the Krasnoselskii fixed piont theorem, periodic solutions are found for a neutral type delay differential system of the form
Yinggao Zhou, Min Wu (2010)
Applications of Mathematics
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The existence of positive periodic solutions for a kind of Rayleigh equation with a deviating argument is studied. Using the coincidence degree theory, some sufficient conditions on the existence of positive periodic solutions are obtained.
Kiguradze, I., Partsvania, N., Půža, B. (2008)
Boundary Value Problems [electronic only]
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Dimiter Petkov Tsvetkov, Svetlin Georgiev Georgiev (1997)
Matematički Vesnik
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Li, Jing-wen, Wang, Gen-qiang (2005)
Applied Mathematics E-Notes [electronic only]
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Carvalho, L.A.V., Ladeira, L.A.C., Martelli, M. (2000)
Portugaliae Mathematica
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