查询词典 weakly compact set

Some conditions for weakly Persistence and extinction are obtained;In the second part, we respectively use C_h space and C_g space theorem to study the existence of periodic solutions of Lotka-Volterra equation with infinite delay, in the end we get the condition of the existense of periodic solutions and estimate the interzone of it.

第二部分利用相空间理论，分别以C_h空间和C_g空间为相空间研究了具有无限时滞的Lotka-Volterra方程周期解的存在性问题，给出了周期解存在的充分条件，并估计出了周期解的存在区间。

Then we found bijections between quadratic form finite automata and input memory linear automata which lead to a way to produce all weakly invertible or weak inverse quadratic form finite automata. In the last section of chapter three, we extend these results to a more general class of nonlinear finite automata (called qusi-quadratic form finite automata).

然后我们建立了建立全体二次型有限自动机与全体输入存储线性有限自动机之间的的一个一一对应L，由于L保持弱逆性（3.20定理），由此我们得到了产生全体可逆二次型有限自动机的方法：要产生一个具有某种可逆性的二次型有限自动机只需产生一个具有同种可逆性的输入存储线性有限自动机，然后作其二次型提升即可。

Establish integrated invertibility theory over it: By R〓R〓 transformation method, we solve the problem of deciding weakly invertibility and finding weak inverse, By founding the bijections between all quadratic form automata and input memory linear finite automata, we find a algorithm to produce all weak inverse quadratic form finite automata.

本文着眼于这些最基本问题，将有限域上的二次型和置换多项式理论引入有限自动机可逆性的研究，构造了一类由二次型构成的非线性有限自动机（3.6定义），称之为二次型有限自动机，我们在其上面建立了与线性有限自动机可逆性理论相对应的完整的可逆性理论：采用线性R〓R〓变换方法，解决了此类有限自动机的弱可逆性判定、求弱逆问题（3.10、3.12定理）、通过建立全体二次型有限自动机与全体输入存储线性有限自动机之间的保持弱逆性的一一对应，给出了产生全部可逆二次型有限自动机的方法。

This paper studies on weak invertibility of a linear finite automata based on its matrix model,gets a full and essential condition on which a linear finite automata weakly and invertibly delays finite steps,and also gives an algorithm whether or not a linear finite automata has weak invertibility .

主要讨论了基于矩阵模型表示的线性有限自动机的弱可逆性，利用矩阵模型得出了线性有限自动机延迟有限步弱可逆的充分必要条件，并且给出了线性有限自动机是否具有弱可逆的算法。

Using variational methods to discuss the number of fixed points of weakly inward mapping satisfying locally Lipschitz condition is one part of this thesis.

利用变分方法讨论满足局部Lipschitz条件的弱内向映射的不动点的个数是本文的一部分内容。

In addition, we obtain the following results:(1) A ring R is weakly unit-regular if and only if so is the n×n matrix ring Mn of R for any n≥1;(2) Let R be a ring such that R/J is regular.

另外，我们还证明了下面两个结果：(1)环R是弱幺正则的当且仅当Mn(n≥1)是弱幺正则环；(2)假设R是一个环且使得R/J是正则环。

The appearanee of halos and skins 15 usually identified by the abnormal inerease of total reaetion eross一seetions or by the narrow mo-- mentum distributions in the fragmentation of weakly bound nueleil一12}.xn order to manifcst the halo phe- nomenon elearly it 15 hope

结果表明，在所测量的角度范围内(6°-20°)，17O的这一依赖关系可以用一条直线很好地拟合，而17F的这一依赖关系需要两条不同斜率的直线才能拟合。17F数据拟合中的这种斜率改变可能起因于17F的奇异结构。

According to the structure feature of the weakly meshed distribution network, a new three-phase power flow method based on the superposition principle is proposed in this paper.

针对少环配电网络的结构特点，提出了一种基于叠加原理求解少环配电网三相潮流的新方法。

This,methinks, is our farewell, lover of mine," she said weakly,"for in a little time I shall be gone. But before I go, I would thank you for all the happy years.

她气若游丝的说：「我的时间不多了，但是在我走之前，我要谢谢你这几年带给我愉快。

At ED10.5 tiny blood vessels in the myocardium first appeared and the myofibril, which was weakly stained compared to the cardiac muscle cell, first appeared in the ventricle.

ED12.5时心肌小梁结构第一次在心室出现，ED14.5时增厚，而在心房少见心肌小梁。

For every one of my New Year resolutions, I have been a backslider for years.

说到我的新年决心，我每年都做

With empathy and focus on a feeling level, we can all relate to the common ground of mutuality of emotions.

有了同情心和感觉上一级的重点，我们都可以涉及到相互的情感共同点。