共查询到20条相似文献，搜索用时 62 毫秒
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用型函数及覆盖曲面的方法证明了单位圆内有限正级K-拟亚纯映射存在这样的Borel点：（1）-↑lim↓r→1 n（r,θ0，ε，f=a）U（x）〉0,至多除去两个例外a值；（2）在这样的Borel点邻域内存在充满圆序列。 相似文献
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用覆盖曲面和型函数方法证明了单位圆内K-拟亚纯映射在满足limr→1T(r,f)-lg(1-r)=∞的条件下,存在这样的Julia点:limr→1n(r,θ0,ε,f=a)U1-1r>0,且在这样的Julia点邻域内存在充满圆序列. 相似文献
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金瑾 《雁北师范学院学报》2010,(3)
对高阶齐次线性微分方程f(k)(z)+Ak-1(z)f(k-1)(z)+Ak-2(z)f(k-2)(z)+…+A1(z)f′(z)+A0(z)f(z)=0的解进行了研究,其中Aj(z)(j=0,1,2,…,k-1)为单位圆△={z∶|z|<1}内的解析函数,给出了高阶齐次线性微分方程解的增长性与系数增长性之间的关系,并证明了高阶齐次线性微分方程的亚纯可允许解在单位圆内的充满圆序列的存在性. 相似文献
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圆与直线相切的证明是初中几何教学的重要内容，这是技巧性较强的几何问题之一。具体证明时，应根据题目特点，选择适当的方法和思路。本文介绍此类问题的常见证法和思路，供参考。 相似文献
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有关单位圆的知识是物理和数学的结合点之一，有时在解决物理问题时，正确的应用单位圆的知识，可使问题迎刃而解，使复杂问题变的简单化，使解决问题变得巧妙而易于理解，本文简单和大家讨论一下单位圆在力学中的应用． 相似文献
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运用Schwarz引理、最大模原理、保域定理,讨论单位圆内(上)的解析函数,由此得到其像区域落在单位圆内、半平面和一般区域范围的4个不等式。 相似文献
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定义了单位圆内亚纯函数的T点,证明了在满足limr→1T(r,f)lg(1/(1-r))=∞的条件下至少存在一个T点,同时得到了单位圆内有限正级亚纯函数关于小函数的T点. 相似文献
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谭炳华 《数学学习与研究(教研版)》2014,(1):97
在三角函数的相关学习和推导中,我们引入了单位圆,三角函数与单位圆之间有着非常巧妙的联系,比如说任意角的三角函数值都可以通过单位圆来确定,可以是单位圆上某个点的坐标,还可以是用单位圆上的一些三角函数线来确定.单位圆在三角函数的学习和研究当中,占据着非常重要的地位.单位圆为三角函数的学习和推导带来了一些更加便利的方法,同样的,在三角函数的相关问题求解过程中,单位圆也是最常用到的一种方法. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献