On Differential Inequalities

On Differential Inequalities
复制标题

DOI:
10.11429/ptmps1907.9.15_268
复制
发表时间:
1918-04
期刊:
--
影响因子:
--
通讯作者:
S. Kakeya
S. Kakeya
中科院分区:
其他
文献类型:
--
作者:
S. Kakeya

文献摘要

被引文献

相似文献

1.导论.考虑函数f:a; B] R!R与可导函数u; v:a; B]!R.众所周知,u 0(t)?f(t; u(t))<v0(t)?f(t; v(t))(t 2 a; B]); u(a)< v(a)意味着u(t)< v(t)(t 2 a; B])。而不是到处都是?为
1. Introduction. Consider a function f : a; b] R ! R and diierentiable functions u; v : a; b] ! R. It is well known 17], p.65 that u 0 (t) ? f(t; u(t)) < v 0 (t) ? f(t; v(t)) (t 2 a; b]); u(a) < v(a) imply u(t) < v(t) (t 2 a; b]). What about instead of < everywhere? For