On periodic solutions of a certain third-order non-linear differential equation
S. Sędziwy (1965)
Annales Polonici Mathematici
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S. Sędziwy (1965)
Annales Polonici Mathematici
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F. H. Szafraniec (1969)
Annales Polonici Mathematici
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Antonio Iannizzotto (2012)
Annales Polonici Mathematici
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Applying a nonsmooth version of a three critical points theorem of Ricceri, we prove the existence of three periodic solutions for an ordinary differential inclusion depending on two parameters.
Zhanyong Li, Qihuai Liu, Kelei Zhang (2020)
Applications of Mathematics
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In many engineering problems, when studying the existence of periodic solutions to a nonlinear system with a small parameter via the local averaging theorem, it is necessary to verify some properties of the fundamental solution matrix to the corresponding linearized system along the periodic solution of the unperturbed system. But sometimes, it is difficult or it requires a lot of calculations. In this paper, a few simple and effective methods are introduced to investigate the existence...
Lian, Jin-Guo (2009)
Applied Mathematics E-Notes [electronic only]
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Lian, Jinguo, Zhang, Hongkun (2008)
Applied Mathematics E-Notes [electronic only]
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G. J. Butler (1974)
Annales Polonici Mathematici
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Anna A. Kwiecińska (1996)
Annales Polonici Mathematici
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A proof of the C⁰-closing lemma for noninvertible discrete dynamical systems and its extension to the noncompact case are presented.
Ján Andres (1987)
Mathematica Slovaca
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Fei Long, Bingwen Liu (2012)
Annales Polonici Mathematici
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This paper is concerned with a class of Nicholson's blowflies models with multiple time-varying delays. By applying the coincidence degree, some criteria are established for the existence and uniqueness of positive periodic solutions of the model. Moreover, a totally new approach to proving the uniqueness of positive periodic solutions is proposed. In particular, an example is employed to illustrate the main results.
Irena Rachůnková (1989)
Mathematica Slovaca
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Fabio Zanolin (1981)
Rendiconti del Seminario Matematico della Università di Padova
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