查询词典 existence proof

Moreover, this dissertation reveals an essential conclusion: The existence of the state feedback solution of H〓 problem is equivalent to that of the maximinimizing the LQ problem, by the existence of real symmetric stable solution of GARE.

文中从微分Riccati方程解的存在性及其性质的论证出发，最终得到了GARE实对称解存在条件的结论。在§2-4中，揭示了本文研究的maxmin鲁棒最优控制问题与H∞状态反馈解及GARE实对称解的存在性等价这一实质性结论。

In order to investigate the existence conditions of the robust optimal state feedback of uncertain system, we have to study the problem of GARE, that is the solution existence of the following equation PA+A'P+Q-PMP=0, Q=Q', M=M' In chapter 2, using some preliminary results and properties of the Riccati differential equation, we have established the sufficient conditions for the GARE problem.

在讨论不确定性系统LQL方法的状态反馈解的存在性条件时，引出了第二章讨论一般代数Riccati方程解的存在性问题，对一般Riccati方程 PA+A'P+Q-PMP=0，Q=Q'，M=M'第二章中先列举讨论了Q、M为正、负定各种情况下的实对称解的存在条件，然后着重研究了M、Q不定的情形。

Finally, in the third section, by constructing some functional which similar to the conservation law of evolution equation and the technical estimates, we prove that in the inviscid limit the solution of generalized derivative Ginzburg—Landau equation converges to the solution of derivative nonlinear Schrodinger equation correspondently in one-dimension; The existence of global smooth solution for a class of generalized derivative Ginzburg—Landau equation are proved in two-dimension, in some special case, we prove that the solution of GGL equation converges to the weak solution of derivative nonlinear Schr〓dinger equation; In general case, by using some integral identities of solution for generalized Ginzburg—Landau equations with inhomogeneous boundary condition and the estimates for the L〓 norm on boundary of normal derivative and H〓 norm of solution, we prove the existence of global weak solution of the inhomogeneous boundary value problem for generalized Ginzburg—Landau equations.

第三部分：在一维情形，我们考虑了一类带导数项的Ginzburg—Landau方程，通过构造一些类似于发展方程守恒律的泛函及巧妙的积分估计，证明了当粘性系数趋于零时，Ginzburg—Landau方程的解逼近相应的带导数项的Schr〓dinger方程的解，并给出了最优收敛速度估计；在二维情形，我们证明了一类带导数项的广义Ginzburg—Landau方程整体光滑解的存在性，以及在某种特殊情形下，GL方程的解趋近于相应的带导数项的Schr〓dinger方程的弱解；在一般情形下，我们讨论了一类Ginzburg—Landau方程的非齐次边值问题，通过几个积分恒等式，同时估计解的H〓模及法向导数在边界上的模，证明了整体弱解的存在性。

The existence of the radially classical solutions with Dirichlet boundary value in unit ball was investigated. Based on perturbation technique, topological method and comparability theorem, the existence of the radially symmetric solutions for the generalized mean curvature equations with proper presupposition was established.

在单位球内考虑广义平均曲率方程组具有Dirichlet边值条件的径向古典解，运用摄动技巧、拓扑方法及比较原理，在一个适当的条件下，证明了广义平均曲率方程组径向对称解的存在性。

This thesis is concerned with the existence and uniqueness of solution, and global attractor's existence of two nonlinear parabolic equations in R 2 and R n.

这篇论文研究了一个R~2和一个R~n上非线性的抛物方程的解的存在性、唯一性、和全局吸引子的存在性。

The drinking water is mankind existence of basic need, safety credibility of drinking water direct relation people crowd of mind and body health and life quality, relation arrive overall construction middle-class family society grandiosity target of realization, this text is from the village drinking safety existence of problem, become because of analysis, guarantee method 3 carried on to elaborate.

饮用水是人类生存的基本需求，安全可靠的饮用水直接关系人民群众的身心健康和生活质量，关系到全面建设小康社会宏伟目标的实现，本文从农村饮水安全存在的问题、成因分析、保障方法三个方面进行了阐述。

In this thesis, we study two problems: the existence results of solutions for generalized vector quasi-equilibrium problems and Hlder continuity of solutions to generalized vector equilibrium problems. The detailed contents are listed as following:In Hausdorff topological vector space, we discuss the existence results of solutions for three types of generalized vector quasi-equilibrium problem (GVQEP1,(GVQEP2) and (GVQEP3), for short respectively.

本文主要研究了两类问题：广义向量拟平衡问题解的存在性以及广义向量平衡问题解的Hlder连续性，具体内容如下：在Hausdorff向量拓扑空间中，讨论了三类广义向量拟平衡问题(GVQEP1)，(GVQEP2)和(GVQEP3)解的存在性定理。

The last chapter illustrates the ultimate end and the persistence of Rousseau\'s political principle, which is the issue of self-cognition. The author thinks that Rousseau\' last work "The Solitary Walker\'s Reveries" provides us with the picture of philosopher\'s existence. The core of philosopher\'s existence is the life of contemplation, and Rousseau can realize his nature and be enclosed with the most heavenliness in contemplation, which is based on the separation between body and spirit and rooted in spirit.

第五章论述卢梭政治哲学原则的彻底化也是其根本目标，即自我认识的问题，作者认为卢梭最后的著作《孤独漫步者的遐思》为人们提供了哲人生活的写照，这种哲人生活的核心是自我认识即沉思生活，在这种沉思中卢梭能够实现自己的天命所归，并在其中度过最幸福的生活，这种生活以肉体—灵魂的分离作为基础，并在灵魂中扎根。

The last chapter illustrates the ultimate end and the persistence of Rousseau"s political principle, which is the issue of self-cognition. The author thinks that Rousseau" last work "The Solitary Walker"s Reveries" provides us with the picture of philosopher"s existence. The core of philosophers existence is the life of contemplation, and Rousseau can realize his nature and be enclosed with the most heavenliness in contemplation, which is based on the separation between body and spirit and rooted in spirit.

第五章论述卢梭政治哲学原则的彻底化也是其根本目标，即自我认识的问题，作者认为卢梭最后的著作《孤独漫步者的遐思》为人们提供了哲人生活的写照，这种哲人生活的核心是自我认识即沉思生活，在这种沉思中卢梭能够实现自己的天命所归，并在其中度过最幸福的生活，这种生活以肉体—灵魂的分离作为基础，并在灵魂中扎根。

Before the end of the world, whether we can Zheng Kaiyan So that we can move forward together is not afraid of the brave recovery If in the first, let me have you Look inside the world, we strongly enough In a transparent fish tank inside, to outbound travel to the Who is In low-temperature inside the love of love is not enough strong Who can love anyone, not to give up In the gentle bubbles inside, we still firmly enough Huamao miss that day, hidden inside a little bit Niunai Ping Free to smile lonely existence of the moment I am not going to have you in tears complained to melt all cold Gentle that you miss is my oath I have been sensible, as you disappear at the end of the world Do not want to think of you, you Taokong I will be good, you all remain in my heart first Deeply buried you, you moved That day will not miss the end of the century, the advent of whom have left Dangerous moment there do not want to give up I have you all are dim memories of sad tragedy Gentle that you miss is my oath Huamao miss that day, hidden inside a little bit Niunai Ping Free to smile lonely existence of the moment I am not going to have you in tears complained to melt all cold Gentle that you miss is my oath Gentle that you miss is my oath

在世界末日之前，我们是否能睁开眼让我们能在一起勇敢的不怕向前追如果能在一次，让我拥有你在世人眼光里面，我们是否够坚决在透明鱼缸里面，游来游去的会是谁在低温的爱里面爱情还是不够强烈谁能够爱著谁，不要说放弃在温柔泡泡里面，我们依然够坚决那天那年花猫想念牛奶瓶里面藏著一点点放手微笑寂寞存在那瞬间有你有我不再抱怨热泪融化一切冷漠温柔怀念是你是我的誓言我已经懂事，任你消失在世界的尽头不愿想起你，把你淘空我会好好的，你一切都留在我心里头深深埋葬你，让你感动那天那年不再想念世纪末来临还有留下谁放弃不想危险存在一瞬间有你有我都是悲剧悲伤冲淡一切回忆温柔怀念是你是我的誓言那天那年花猫想念牛奶瓶里面藏著一点点放手微笑寂寞存在那瞬间有你有我不再抱怨热泪融化一切冷漠温柔怀念是你是我的誓言温柔怀念是你是我的誓言？？？？？？

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。