查询词典 invariance theorem

This paper is in the comparison theorem of Sturm-Liouville problem, based on the type of separation is given.

该文讨论了一类分离边界条件下的Sturm-Liouville特征值问题，就不同的势函数q，分别在右定和左定情形下建立了特征值的比较定理。

In Chapter 2,the comparison theorem of ordinary differential equations isgeneralized to neutral functional differential equations.

第二章 将常微分方程的比较原理推广到中立型泛函微分方程。

In chapter 3,by means of Comparison Theorem,we investigate the persistence of a prey-predator system with diffusion and delays .

在第二章，我们运用独立子系统方法考虑了一类具有生理阶段结构的竞争捕食-被捕食系统正周期解的存在性及其全局吸引性。

In this paper, A class of diffusion systems with nonlinear source were studied, using comparison theorem and method of upper and lower solutions .

本文利用比较定理与上、下解方法研究了一类具非线性源的扩散系统，证明了该系统整体解的存在性与零解的稳定性，推广了C。

In section 4, we first prove a version of the comparison theorem for ε-ζprojective resolutions.

作为推论，我们给出了Gorenstein投射对象的几个性质命题。

Boundednesses of population and toxin in population and in the environment are shown by comparison theorem.

通过比较定理得到了种群的有界性，及种群体内毒素和环境中毒素的有界性。

In the process of calculation, by comparison theorem and strict calculation, some sufficient conditions for persistent and extinct of three populations are obtained.

推导过程中主要应用了比较定理，并且通过严密的计算，得到了三种群持续生存性和绝灭性的充分条件。

Making use of the comparison theorem, some sufficient conditions are derived for permanence of the system and non-permanence of predators.

运用比较定理，得到了系统持久生存和捕食者灭绝的充分条件。

By analytical method and comparison theorem, some sufficient conditions for uniformly persistent of two populations and the whole system are obtained.

利用分析法和比较定理，得到两种群分别一致持续生存以及整个系统一致持续生存的充分条件。

Establishing a novel Razumikhin type comparison theorem, input-to-state stability of Hopfield neural networks is studied.

建立新的Razumikhin型比较定理，用以研究Hopfield延迟神经网络的输入—状态稳定性。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

乌鸦叫。 51-论文网