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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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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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孙道椿 《赣南师范学院学报》1992,(Z2)
假设f(z)是单位圆的半纯函数,且f(0)≠0,∞。那么有如下结论: (ⅰ)对00,和任给的实函数h(r)≥1,存在常数c,满足: T(r,f)≤cA~(1+ε)(r)(1-r)~(-1+ε)·T(R,f') 其中R=[1+rh(r)][1+h(r)]~(-1) 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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由一元函数f(x)在点x0的极限存在，很容易地得出特殊二元函数F(x，y)=f(x)在点(x0，y0)的二重极限也存在。但若limx→x0f(x)=A,f(x)在x0有意义，且f(x0)≠A，则二重极限linx→x0,y→y0f(x)不存在。 相似文献
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我们知道 ,解有关复数的命题大体有三大策略 :(1)化归思想 ;(2 )整体思想 ;(3)数形结合 .本文以数形结合的解题思想为中心 ,探讨复平面上圆方程的若干等价命题 ,供同行参考和指正 .定理 1 下列六个命题彼此等价 :1.虚数 z满足 |z|=r(r是正实数 ) .2 .虚数 z满足 |z2 |+(1- r) |z|- r=0(r是正实数 ) .3.虚数 z满足 zz=r2 (r是正实数 ) .4 .虚数 z满足 - 2 r相似文献
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郑成伟 《淮北职业技术学院学报》2006,5(5):55
一、二重极限
定义:设函数发f(x,y)在区域D内有意义,P0(x0,y0)是D的内点,如果对于任意给定的正数ε,总存在正数δ,使得对于D内且适合不等式0＜|P0P|=(x-x0)2 (y-y0)2＜δ的一切点p(x,y),都有|f(x,y)-A|＜δ成立,则称常数A为函数f(x,y)当x→x0,y→y0的二重极限,记作limy→y0x→x0 f(x,y)=A或f(x,y)→A(x→x0,y→y0)…… 相似文献
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在高中数学第三册 (选修II)第三章导数与微分的学习过程中 ,不少同学对极限、连续、可导、极值、最值等概念混淆不清 .下面举例谈一谈这些概念间的区别与联系 ,以期对同学们的学习有所帮助 .1 limx→x0f(x)与 f(x0 )( 1)x→x- 0 是指x从点x0 左侧 (x x0 )无限趋近于x0 .而x→x0 是指x可以用任何方式无限趋近于x0 ,既可以从点x0 的左侧无限趋近于x0 ,也可以从点x0 右侧无限趋近于x0 ,还可以从点x0 的两侧交错地无限趋近于x0 等等 ,且有如下充要条件 :limx→x0f(x) =a limx→x-0f(x) =limx→… 相似文献
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1导函数f′(x)在x=x0处的极限与函数y=f(x)在x=x0处的可导性定理1若函数f(x)在(a,b)内连续,在(a,b)中除点x0外处处可导,且li mx→x0f′(x)存在,那么函数y=f(x)在x=x0处可导,且f′(x0)=lxi→mx0f′(x).证明:任取异于x0的x∈(a,b),在[x0,x]或[x,x0]上应用lagrange中值定理,有f(xx 相似文献
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本文介绍两个半径不相等的圆当它们内切或外切时的一个重要性质及其应用 .命题 1 设半径分别为 R,r(R>r)的两个圆内切于 T点 ,自大圆上任意一点 P向小圆作切线 (P与 T不重合 ) ,切点为 Q.那么PT=PQ RR- r.命题 2 设半径分别为 R,r(R>r)的两圆外切于点 T,自大圆上任意一点 P向小圆作切线 (P与 T不重合 ) ,切点为 Q.那么PT=PQ RR+r.1 命题 1的证明设半径分别为 R,r的两圆⊙O,⊙O1 内切于点 T,过大圆⊙O上任意一点 P作小圆⊙ O1 的切线 ,其切点为 Q(P≠ T) .连结 PT交⊙ O1 于 A点 ,再连结 O1 A和 OP.在△ O1 AT与△ OP… 相似文献
11.
主要讨论值分布的一个分支——幅角分布论中的Julia方向存在性定理。利用Eremenko.A得到的Picard型定理建立了复投影空间上的有一渐进值的全纯曲线与代数超曲面相联系的Julia方向存在性定理。 相似文献
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María de la Cinta Mu?oz-Catalán José Carrillo Yá?ez Nuria Climent Rodríguez 《Journal of Mathematics Teacher Education》2010,13(5):425-439
This article reports on a study into how collaborative contexts influence the professional development of an early-career
primary teacher, Julia. We describe the process of change by which Julia manages to make her planning to teach mathematics
more flexible so as to adapt to student difficulties, and we analyse the role that joint reflection plays in promoting this
change. In order to understand the how of this influence, we carried out an analysis of the interactions within the group from Julia’s point of view, following
a dialogical approach to discourse. We believe that it is in and through the interactions that Julia constructs her interpretation
of the opinions, critiques and suggestions expressed. This interpretation conditions the extent of her involvement and moulds
the influence of the context on her professional development. The presence of skilled collaborators proved decisive in promoting
this development. 相似文献
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Julia Eccleshare 《Children‘s Literature in Education》1991,22(1):19-24
Through her work onChildren's Books of the Year Julia Eccleshare has a unique overview of the development of fiction written for children during the 1980s.CLE invited her to detect trends in the writing and publishing of children's books during the past decade.Julia Eccleshare is a freelance editor, advisor to publishers, and reviewer of children's books for national newspapers. She has written or edited some 15 books, includingTreasure Islands: The Woman's Hour Guide to Children's Reading: BBC 1988. 相似文献
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In this article three education and health services professionals, Julia Halpin, Sally Pitt and Emma Dodd, describe and reflect upon the way in which a small group of professionals from health and education services worked in collaboration to meet the need to inform and empower parents of preschool children with a diagnosis of autistic spectrum disorder (ASD). Julia and Sally, both clinical nurse specialists, and Emma, an educational psychologist, outline the background to the project in terms of demographics, epidemiology and service needs, and explain the way in which the interagency project was initiated as a ‘bottom‐up’ response, reflecting on the advantages and disadvantages of this way of working. The team piloted an innovative evaluation method which is offered as a tool that could usefully be developed further. 相似文献
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Inna Semetsky 《Educational Philosophy and Theory》2015,47(10):1069-1081
AbstractThere are two focal points to this article. One is to address Julia Kristeva’s theoretical corpus in the context of philosophy of education. Kristeva’s notion of subject in process problematises education with its habitual emphasis on ‘product’. Another is to consider her impact from the perspective of edusemiotics. Edusemiotics is a new direction in educational philosophy and theory, and Kristeva represents one contemporary French intellectual who implicitly inspired the creation, research and development of edusemiotics. The article will briefly address the distinguished features of edusemiotics, the central of which is process ontology in contrast to the old Cartesian paradigm of substance dualism that continues to haunt education. The article will also address the role of presymbolic (or semiotic) dimension in the process of self-formation and, as a follow up, reformulate the concept of lifelong education and teacher training. 相似文献
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Cultural Studies of Science Education - Education and Social Media: Toward a Digital Future (2016), edited by Christine Greenhow, Julia Sonnevend, and Colin Agur, is a compilation of essays by... 相似文献
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关于代数体函数的奇异方向 总被引：2，自引：0，他引：2
讨论了代数体函数的重值，建立了角域内涉及代数体函数重值的基本不等式，由此证明了有限正级代数体函数至少存在一条涉及其重值的Julia方向和Borel方向。 相似文献
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让世界了解、认识当代中国,翻译就是构架中外文化交流的重要桥梁。英国著名汉学家蓝诗玲(JuliaLovell)对中国现当代文学作品的译介,就是在适应翻译生态环境的前提下,以译者为中心,把译作与原作进行和谐统一的译介方法。 相似文献