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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Frequency entrainment for almost periodic evolution equations
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by James Murdock PDF
Proc. Amer. Math. Soc. 96 (1986), 626-628 Request permission

Abstract:

A theorem of Massera stating that periodic solutions of equations are (under a simple hypothesis) entrained is generalized to limit periodic equations and (with a weak definition of entrainment) to almost periodic equations. An error is explained in a stronger result claimed by Cartwright.
References
  • A. S. Besicovitch, Almost periodic functions, Dover Publications, Inc., New York, 1955. MR 0068029
  • M. L. Cartwright, Almost periodic differential equations and almost periodic flows, J. Differential Equations 5 (1969), 167–181. MR 239191, DOI 10.1016/0022-0396(69)90110-7
  • N. Forbat, Amalytische Mechanik der Schwingungen, V.E.B. Deutsche Verlag der Wissenschaft, Berlin, 1966. P. Hagedorn, Non-linear oscillations, translated by W. Stadler, Clarendon Press, Oxford, 1981.
  • José L. Massera, Remarks on the periodic solutions of differential equations, Bol. Fac. Ingen. Montevideo 4 (1950), no. (Año 14) (Spanish). MR 47866
  • G. C. O’Brien, The frequencies of almost periodic solutions of almost periodic differential equations, J. Austral. Math. Soc. 17 (1974), 332–344. Collection of articles dedicated to the memory of Hanna Neumann, VII. MR 0357979
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Additional Information
  • © Copyright 1986 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 96 (1986), 626-628
  • MSC: Primary 34C27; Secondary 35B15
  • DOI: https://doi.org/10.1090/S0002-9939-1986-0826492-4
  • MathSciNet review: 826492