Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-23T17:38:11.724Z Has data issue: false hasContentIssue false

Growth and Decay Estimates near Non-Elementary Stationary Points

Published online by Cambridge University Press:  20 November 2018

Courtney Coleman*
Affiliation:
Harvey Mudd College, Claremont, California
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Local growth and decay estimates near the stationary point at the origin are derived in § 3 for solutions of the vector system,

(1)

where A(x) and B(y) are homogeneous of degree m > 1 in the components of x and y, respectively, and f* and g* are of order greater than m in ‖(x, y)‖ near the origin. It is assumed that x = 0 is asymptotically stable and y = 0 is asymptotically unstable for the homogeneous systems of first approximation,

(2)

In order to derive the estimates in § 3, various results are needed concerning solutions of a homogeneous system such as (2) (a). These are derived in § 2 and are based on work of Hahn [4; 5], Lefschetz [8], and Zubov [12].

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1970

References

1. Coleman, C., Systems of differential equations without linear terms, Internat. Sympos. Nonlinear differential equations and nonlinear mechanics, pp. 445453 (Academic, New York, 1963).Google Scholar
2. Coppel, W. A., Stability and asymptotic behavior of differential equations (Heath, Boston, 1965).Google Scholar
3. Grobman, D. M., Topological classification of neighborhoods of a singularity in n-space, Mat. Sb. (N. S.) 56 (98) (1962), 7794. (Russian)Google Scholar
4. Hahn, W., Stability of motion (Springer, New York, 1967).Google Scholar
5. Hahn, W., ÜberDifferentialgleichungen erster Ordnung mit homogenen rechten Seiten, Z. Angew. Math. Mech. 46 (1966), 357361.Google Scholar
6. Hartman, P., Ordinary differential equations (Wiley, New York, 1964).Google Scholar
7. Hartman, P., On the local linearization of differential equations, Proc. Amer. Math. Soc. 14 (1963), 568573.Google Scholar
8. Lefschetz, S., The critical case in differential equations, Bol. Soc. Mat. Mexicanna (2) 6 (1961), 518.Google Scholar
9. Markus, L., Quadratic differential equations and non-associative algebras; Contributions to the theory of nonlinear oscillations, Vol. V, pp. 185213 (Princeton Univ. Press, Princeton, N. J., 1960).Google Scholar
10. Reizins, L. E., Local topological equivalence of systems of differential equations, Differencial'nye Uravnenija 4 (1968), 199214. (Russian)Google Scholar
11. R. D., Schafer, An introduction to nonassociative algebras (Academic Press, New York, 1966).Google Scholar
12. Zubov, V. I., Methods of A. M. Lyapunov and their application, Technical Report AEC-tr.- 4439, Nuclear Science Abstracts (32435) 15 (1961), 4183 (translated from Metody Lyapunova, A. M. i. ikh Primenenie; publication of the Publishing House of Leningrad University, 1957).Google Scholar