Rectifiable oscillations in second-order linear differential equations
Rectifiable oscillations in second-order linear differential equations
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二阶线性微分方程中的可校正振荡
DOI:
10.1016/j.jde.2008.05.016
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发表时间:
2008
影响因子:
2.4
通讯作者:
J. Wong
中科院分区:
文献类型:
--
作者:
M. Kwong;Mervan Pašić;J. Wong
We study the linear differential equation (P):y″(x)+f(x)y(x)=0, on I=(0,1), where the coefficient f(x) is strictly positive and continuous on I, and satisfies the Hartman–Wintner condition at x=0. The four main results of the paper are: (i) a criterion for rectifiable oscillations of (P), characterized by the integrability of f(x)4 on I; (ii) a stability result for rectifiable and unrectifiable oscillations of (P), in terms of a perturbation on f(x); (iii) the s-dimensional fractal oscillations (for which we assume also f(x)∼cx−αwhen x→0, α>2, and s=max{1,3/2−2/α}); and (iv) the co-existence of rectifiable and unrectifiable oscillations in the absence of the Hartman–Wintner condition on f(x). Explicit examples related to the above results are given.
DOI:
10.2307/2532125
发表时间:
1990-03
期刊:
--
影响因子:
--
作者:
K. Falconer
通讯作者:
K. Falconer