查询词典 existence of extremum

It also states that students "should know how to use quadratic functions to solve extremum problems in everyday life". It seems to me that befe all these, students should be properly taught the technique of completing the square (which underlies the solution of extremum problems of any kind) and the quadratic formula (which would then give *exact* solutions of quadratic equations).

我认为，在学习这些之前，应该适当地教给学生配平方的技巧（它是解决任何最值问题的基础），以及二次求根公式（它能给出二次方程的精确解）。

P_type semiconductor ; galvanomagnetic effect ; Hall coefficient extremum ; extremum factor

p型半导体；磁电效应；霍尔系数极值；极值因数

Moral existence and knowledge existence under the social sectionalism cannot explain the teachers' subject existence while life existence is the base of teachers' subject existence.

"社会本位论"下的道德存在和知识存在无法完整诠释教师的主体存在，生命存在是教师主体存在的根基。

In this project, we study the theory of higher order differential equations in Banach spaces and related topics. We solve an open problem put forward by two American Mathematicians and two Italian Mathematicians concerning wave equations with generalized Weztzell boundary conditions, introduce an existence family of operators from a Banach space $Y$ to $X$ for the Cauchy problem for higher order differential equations in a Banach space $X$, establish a sufficient and necessary condition ensuring $ACP_n$ possesses an exponentially bounded existence family, as well as some basic results in a quite general setting about the existence and continuous dependence on initial data of the solutions of $ACP_n$ and $IACP_n$. We set up quite a few multiplicative and additive perturbation theorems for existence families governing a wide class of higher order differential equations, regularized cosine operator families, regularized semigroups, and solution operators of Volterra integral equations, obtain classical and strict solutions having optimal regularity for the inhomogeneous nonautonomous heat equations with generalized Wentzell boundary conditions, gain novel existence and uniqueness theorems,which extend essentially the existing results, for mild and classical solutions of nonlocal Cauchy problems for semilinear evolution equations, present a new theorem with regard to the boundary feedback stabilization of a hybrid system composed of a viscoelastic thin plate with one part of its edge clamped and the rest-free part attached to a visocelastic rigid body. Also we obtain many other research results.

在本研究中，我们对Banach空间中的高阶算子微分方程的理论以及相关理论进行了深入研究，解决了由美国和意大利的四位数学家联合提出的一个关于广义Wentzell边界条件下的波动方程适定性的公开问题，恰当地定义了Banach空间中的高阶算子微分方程Cauchy问题的算子存在族及唯一族，建立了齐次和非齐次高阶算子微分方程Cauchy问题适定性的判别定理，获得了关于高阶退化算子微分方程的算子存在族、正则余弦算子族、正则算子半群、Volterra积分方程解算子族的乘积扰动和混合扰动定理，得到了关于以依赖于时间的二阶微分算子为系数的一大类非自治热方程非齐次情形下的时变广义Wentzell动力边值问题的古典解、严格解的最大正则性结果，获得了半线性发展方程非局部Cauchy问题广义解和经典解存在唯一的判别条件，从实质上推广了现有的相关结果；得到了一部分边缘固定而另一部分附在一粘弹性刚体上的薄板构成的混合粘弹性系统的边界反馈稳定化的新稳定化定理，还建立了一系列其他研究结果。

Fichte's theory of self-identity represents a significant leap in philosophy. If it can be said that ancient Greek philosophy realizes the existence of the self in wisdom, and enlightenment philosophy establishes the existence of the self in knowledge, then Fichte offers an insight into the innate nexus between action and self-existence, providing genuine practical elements for a theory of existence in modern philosophy.

费希特的同一自我理论表明一个重要的飞跃，如果说古希腊的哲学是在智慧中实现自我的存在，包括康德在内的启蒙哲学在知识中确立自我的存在，那么费希特已洞察到行动与自我存在的内在关系，为现代哲学的存在观设计了实践的真实元素。

In chapter one,the backgrounds and current situation of operator theory in Banach space are introduced and the preliminaries of Banach space are given.In chapter two,we study the existence and uniqueness of fixed point for decreasing strict-set-contraction operator in product space.Under the weak continuous condition,we obtain the existence and uniqueness of fixed point for decreasing operator and we give an application of these results; In chapter three,we get several positive fixed point theorems of decreasing operator and the existence and uniqueness theorems of positive fixed point for operator C=A+B,C=D-A in real Banach space where the order is decided by a normal cone; In chapter four,we obtained some existence and uniqueness theorems of fixed point for some mixed monotone operators in semi-ordered Banach space.

在第一章中，主要介绍了半序Banach空间非线性算子的研究历史背景、现状以及半序Banach空间中的预备知识；在第二章中，我们利用半序方法研究了Banach乘积空间中严格集压缩减算子不动点存在唯一性问题，在弱连续的条件下，得到了不动点的存在唯一性和迭代收敛性，同时，给出了它们的一些应用；在第三章中，我们建立了拟弱连续减算子的正不动点定理，并证明了算子C=A+B，C=D-A的正不动点存在唯一性定理；在第四章中，我们得到了半序Banach空间中混合单调算子的不动点存在性及唯一性定理。

Habitancy office at there there exists the heart being in the middle quilt storing the work zero adjustment holding office at court sending the new leaf to correct existence to dry thing delivering letter in there in the early morning pay court to self a has made displacement to being made being changed into a circle what comes to a climax in cracking down on existing there nearby holding office at court sending a little nature making effort to count stock right office central section holding office at court sending the Yan crack to be sent quilt holding office at court subsidiary self faces existence to there price is worth paying attention to being worth paying court to existence to the left rear space firmly holding out the right hand batsman that faction out of office to go there fulfill carve print hand letter all kinds of Strike existence degree towards the acceptor cracking down on firmly holding out the office at adjacent there pay court to faction mark of Kaiate head son

Habitancy 办公室在那里那里存在心脏存在在中中部缝被耐储藏使工作作归零校正调整任职在求爱送信对是新树叶向对恰当存在向弄干东西履行刻印刷体字母在中那里在中一大早向表示敬意向自身 a 富人制做被取代向存在制做存在改变变为 a 盘旋什么来向 a 达到高潮在中使裂开下来在上存在那里在附近任职在求爱送信一点本质制造的为所作的努力向清点股票的权利办公室中心部分任职在求爱送信 Yan 使裂开向被寄送由转的缝被任职在求爱的补充自身脸存在向那里价格是对的价值注意向存在对的价值向表示敬意向存在向留下上公共厕所空间坚定支持住从里面右手击球手那个派别从里面的办公室向去那里履行切肉印刷体手写字刻印刷体字母各种各样的打击存在度向接受者使裂开下来在上坚定支持住从里面办公室在邻近的那里向表示敬意向派别标志的 Kaiate 儿子领班

However, one can (1) accept DD and thereby accept the converse thesis that the existence of certain aspects of psychological reality requires the existence of a nonpsychological reality containing an external, physical world, and yet (2) reject the thesis that the existence of such a non-psychological reality requires the existence of a 'sustaining' or 'constituting' psychological reality.

无论如何，某人能1、接受DD因此接受相反的主张（心理实在的某些特定方面的存在必须非心理实在的存在），2、拒绝这个主张（——这样的非心理实在的存在必须持存的、构成性的心理实在的存在）。

To put it in another way, it is a process from non-existence to existence and to a new existence, wherein the harmony of existence is made conspicuous.

存在也是一个从无到有到无的过程，存在之和谐在这一过程中得以彰显。

The sufficient conditions for guaranteeing the permanence of the system and the existence and uniqueness of periodic solution having globally asymptotical stability are obtained by using the extremum principle,fixed point theorem and V function method s together.

讨论一类具 Holling 类功能反应和放养的捕食链非自治扩散系统，应用极值原理和不动点定理及 V函数法，得到该系统的一致持久性以及存在唯一全局渐近稳定周期解的充分条件。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。