Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-28T04:55:49.993Z Has data issue: false hasContentIssue false

Periodic solutions of non-linear differential equations of the second order. IV

Published online by Cambridge University Press:  24 October 2008

Chike Obi
Affiliation:
Pembroke CollegeCambridge and the Massachusetts Institute of Technology Cambridge (U.S.A), Under the Foreign Students Summer Project

Extract

1.1. This paper is a theoretical investigation in the real domain of the existence of subharmonic solutions of non-linear differential equations of the form

where F is analytic and of least period 2π/ω in t; ε = (ε1, …, εn) is small; and F(x, ẋ, 0, t) is not linear in x and ẋ.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1951

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1)Cartwright, M. L.Research, 1 (1948), 602.Google Scholar
(2)Cartwright, M. L., Copson, E. T. and Grieg, J.The Advancement of Science, 6, no. 21 (1949), 112.Google Scholar
(3)Cartwright, M. L. and Littlewood, J. E.Ann. Math. 48 (1947), 490.CrossRefGoogle Scholar
(4)Den Hartog, J. P.Mechanical Vibrations, 2nd ed. (New York, 1940), p. 420.Google Scholar
(5)Forsyth, A. R.Differential Equations, 1st ed. (London, 1885), pp. 98101.Google Scholar
(6)Friedrichs, K. O. and Stoker, J. J.Quarterly of Applied Math. 1, 2 (1943), 97115.CrossRefGoogle Scholar
(7)Ince, E. L.Ordinary differential equations, 1st American ed. (New York, 1944), p. 224.Google Scholar
(8)Massera, J. L.Math. Rev. (1949), p. 457.Google Scholar
(9)Moulton, F. R.American J. Math. 34 (1912), 177202.CrossRefGoogle Scholar
(10)Moulton, F. R.Differential Equations (New York, 1930), pp. 321–6, § 165.Google Scholar
(11)Obi, Chike. J. London Math. Soc. 25 (1950).Google Scholar
(12)Obi, Chike. Doctorate dissertation (Cambridge, 1950).Google Scholar
(13)Obi, Chike. Paper II of this series communicated to the London Math. Society.Google Scholar
(14)Stoker, J. J.Nonlinear vibrations, 1st ed. (New York, 1950).Google Scholar
(15)Timoshenko, S.Vibration problems in engineering, 2nd ed. (London, 1937), pp. 149–50.Google Scholar