Extremal Problems of the Density for Vibrating String Equations with Applications to Gap and Ratio of Eigenvalues
Extremal Problems of the Density for Vibrating String Equations with Applications to Gap and Ratio of Eigenvalues
复制标题
振动弦方程密度极值问题及其在间隙和特征值比中的应用
DOI:
10.1007/s12346-020-00351-y
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发表时间:
2020-01
影响因子:
1.4
通讯作者:
Xie Bing
中科院分区:
文献类型:
--
作者:
Qi Jiangang;Li Jing;Xie Bing
The present paper obtains the infimum of the densities for vibrating string equations in terms of the gap and ratio of the first two eigenvalues. The main result in this paper can be viewed as a new version of the Lyapunov inequality involving the first two eigenvalues. Some new estimates of the gap and ratio are obtained. Furthermore, the classical Lyapunov inequality can be deduced by the main conclusion.
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DOI:
10.1016/j.aml.2012.05.001
发表时间:
2012-12
期刊:
Appl. Math. Lett.
影响因子:
--
作者:
Yan-Hsiou Cheng
通讯作者:
Yan-Hsiou Cheng
DOI:
10.1137/120896426
发表时间:
2013-04
期刊:
SIAM J. Appl. Math.
影响因子:
--
作者:
W. Rundell;P. Sacks
通讯作者:
W. Rundell;P. Sacks
影响因子:
3.5
作者:
R. Courant;David Hilbert;T. Teichmann
通讯作者:
R. Courant;David Hilbert;T. Teichmann
DOI:
10.1007/978-1-4614-8523-0
发表时间:
2013
期刊:
Basic Theory
影响因子:
--
作者:
J. P. Pinasco
通讯作者:
J. P. Pinasco
影响因子:
2.4
作者:
M. Ashbaugh;R. Benguria
通讯作者:
M. Ashbaugh;R. Benguria