Best constant for Ulam stability of Hill's equations

被引:18
作者
Fukutaka, Ryuma [1 ]
Onitsuka, Masakazu [2 ]
机构
[1] Seishoku Co Ltd, 2-8-7 Nakai Cho, Okayama 7000804, Japan
[2] Okayama Univ Sci, Dept Appl Math, 1-1 Ridai Cho, Okayama 7000005, Japan
来源
BULLETIN DES SCIENCES MATHEMATIQUES | 2020年 / 163卷
关键词
Ulam stability; Best constant; Hill's equation; Periodic coefficient; Second-order linear differential equation; LINEAR-DIFFERENTIAL EQUATIONS;
D O I
10.1016/j.bulsci.2020.102888
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The purpose of this study is to consider Ulam stability (US) of a class of Hill's equations and to derive the best (minimal) Ulam stability constant (US constant). The best constant can be obtained by using a different method from the previous studies. The easy-to-calculate US constant, which is close to the best one, is also obtained. An example is included for comparison with previous studies. (C) 2020 The Author(s). Published by Elsevier Masson SAS.
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页数:23
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