Periodic solutions of differential equations in the cylindrical space
Stanisław Sędziwy (1972)
Annales Polonici Mathematici
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Stanisław Sędziwy (1972)
Annales Polonici Mathematici
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G. J. Butler (1974)
Annales Polonici Mathematici
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G. J. Butler, H. I. Freedman (1979)
Annales Polonici Mathematici
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F. H. Szafraniec (1969)
Annales Polonici Mathematici
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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...
S. Sędziwy (1965)
Annales Polonici Mathematici
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Radosław Pietkun (2010)
Bulletin of the Polish Academy of Sciences. Mathematics
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The existence of a continuous periodic and almost periodic solutions of the nonlinear integral inclusion is established by means of the generalized Schauder fixed point theorem.
Makay, Géza (2000)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Bahman Mehri (1977)
Archivum Mathematicum
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Jean-Claude Guillot, Benoit Grébert (1993)
Forum mathematicum
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Fabio Zanolin (1981)
Rendiconti del Seminario Matematico della Università di Padova
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Stanisław Sȩdziwy (2009)
Bollettino dell'Unione Matematica Italiana
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The note presents a simple proof of a result due to F. Obersnel and P. Omari on the existence of periodic solutions with an arbitrary period of the first order scalar differential equation, provided equation has an n-periodic solution with the minimal period n > 1.
Ma, Ruyun, Chen, Tianlan, Lu, Yanqiong (2010)
Discrete Dynamics in Nature and Society
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