Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-23T00:29:45.453Z Has data issue: false hasContentIssue false

Lyapunov Inequalities and Bounds on Solutions of Certain Second Order Equations*

Published online by Cambridge University Press:  20 November 2018

Stanley B. Eliason*
Affiliation:
University of Oklahoma, Norman, Oklahoma 73069
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.

In this paper we consider the equation

(1.1) (r(t)y′(t))′+p(t)f(y(t)) = 0

under the conditions

((H0): the real valued functions r, r′ and p are continuous on a non-trivial interval J of reals, and r(t)>0 for tJ;

and

(H1):f:R→R is continuously differentiable and odd with f'(y)>0 for all real y. We also consider the equation

(1.2) y″(t)+m(t)y′(t)+n(t)f(y(t)) = 0

under the conditions (H1) and

(H2): the real valued functions m and n are continuous on a non-trivial interval J of reals.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1974

Footnotes

*

Based on research supported in part by the U.S. Army Research Office-Durham through Grant Number DA-ARO-D-31-124-72-G154 with the University of Oklahoma Research Institute.

References

1. Eliason, S. B., A Lyapunov inequality for a certain second order non-linear differential equation, J. London Math. Soc, (2), 2, (1970), 461-466.Google Scholar
2. Eliason, S. B., Comparison theorems for second order nonlinear differential equations, Quart. Appl. Math., 35, (1971), 148-156.Google Scholar
3. Fink, A. M., and St.Mary, D. F., On an inequality of Nehari, Proc. Amer. Math. Soc, 21, (1969), 640-642 Google Scholar
4. Hartman, P., Ordinary Differential Equations, New York, 1964, 345-346, 401.Google Scholar
5. Levin, A., On linear second order differential equations, Soviet Math. Dokl., 4, (1963), 1814-1817.Google Scholar
6. Liapounoff, A., Problème générale de la stabilité du mouvement, Annals of Mathematics Study 17, Princeton University Press, (1949).Google Scholar
7. Nehari, Z., On an inequality of Lyapunov, Studies in Mathematical Analysis and Related Topics, Stanford University Press, (1962), 256-261.Google Scholar
8. St.Mary, D. F., Some oscillation and comparison theorems for (r(t)y')'+p(t)y=0, J. DifL Eq., 5, (1969), 314-323.Google Scholar