Comparison theorems for second-order nonlinear differential equations
Author:
Stanley B. Eliason
Journal:
Quart. Appl. Math. 29 (1971), 391-402
MSC:
Primary 34C10; Secondary 34B15
DOI:
https://doi.org/10.1090/qam/402177
MathSciNet review:
402177
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Abstract: Comparison theorems for a nonlinear eigenvalue problem as well as a Lyapunov type of inequality are derived. They are used to establish upper and lower bounds for various integral functionals associated with real solutions of the nonlinear boundary value problem $y” + p\left ( x \right ){y^{2n + 1}} = 0, y\left ( a \right ) = y’\left ( b \right ) = 0$, where $a < b$ are real, $n$ is a positive integer and $p$ is positive and continuous on $\left [ {a,b} \right ]$. Some of the results are analogues of a distance between zeros problem for the linear case of $n = 0$.
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Article copyright:
© Copyright 1971
American Mathematical Society