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Feng, Jian-Xia; Han, Zhi-Qing

Periodic solutions to differential systems with unbounded or periodic nonlinearities. (English) Zbl 1109.34032

J. Math. Anal. Appl. 323, No. 2, 1264-1278 (2006).
The authors investigate the existence and multiplicity of periodic solutions to differential systems of Josephson type. They prove some variants of results obtained by K. C. Chang and others [see also A. Fonda and J. Mawhin, in: M. Themistocles Rassias (ed.), The Problem of Plateau: A tribute to J. Douglas and T. Rado. London: World Scientific Publishing Co. Pte. Ltd, 111–128 (1992; Zbl 0798.58028)]. The proofs use variational methods, and in particular the saddle point theorem with some of its generalizations.
Reviewer: Alessandro Fonda (Trieste)

Cited in 6 Documents

MSC:

34C25 Periodic solutions to ordinary differential equations

Keywords:

Josephson-type system; saddle point theorem

Citations:

Zbl 0798.58028
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\textit{J.-X. Feng} and \textit{Z.-Q. Han}, J. Math. Anal. Appl. 323, No. 2, 1264--1278 (2006; Zbl 1109.34032)
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References:

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[11] Tang, C.L., Periodic solutions for a class of nonautonomous subquadratic Hamiltonian systems, J. math. anal. appl., 275, 870-882, (2002) · Zbl 1043.34045
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