共查询到20条相似文献，搜索用时 500 毫秒
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具有0和∞两个亏值的亚纯函数唯一性,得到了相关的三个定理.定理1:设f(z)、g(z)为非常数亚纯函数,1和∞是f(z)与g(z)的CM分担值,(?)(∞,f)=(?)(∞,g)=1,δ(0,f)+δ(0,g)1,则f(z)≡g(z),或f(z)g(z)≡1.定理2与定理3:设f(z)、g(z)为非常数亚纯函数,0、1和∞是f(z)与g(z)的CM分担值,δ(0,f)+2(?)(∞,f)5/2,(或者δ(0,f)+(?)(∞,f)3/2),则f(z)≡g(z),或f(z)g(z)≡1. 相似文献
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研究了分担一个值且具有一个亏量等式的亚纯函数的惟一性问题 .讨论了对任何 2个非常数亚纯函数f(z) ,g(z)只要满足 :δ(0 ,f) +δ(0 ,g) +δ(∞ ,f) +δ(∞ ,g) =3或者δ2 (0 ,f) +δ2(0 ,g) +δ2 (∞ ,f) +δ2 (∞ ,g) =3且E(1,f) =E(1,g) ,那么 ,f(z) ,g(z)必定具有 5种情形之一 . 相似文献
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设非常数亚纯函数f(z)和 (z)以a1,a2 ,a3 ,为IM分担值 ,以a4 为CM分担值 ,如果存在 μ∶ 0 ≤ μ <12 使 N r,1f-a1+ N r,1f-a2 ≤ μT(r,f) +S(r,f) ,那么f(z)和 (z)也以a1,a2 ,a3 为CM分担值 相似文献
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研究了高阶微分方程f(k)+A(k-1)(z)f(k-1)+A(k-1)(z)f(k-2)+…+A1(z)f'+A0(z)f=0和f(k)+A(k-1)(z)f(k-1)+A(k-1)(z)f(k-2)+…+A1(z)f'+A0(z)f=F(z)的亚纯解f(z)与其小函数ψ(z)的关系,得到了微分方程解取小函数的点的二二级收敛指数的精确估计,其中Aj(z)是亚纯函数。 相似文献
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主要研究了具有四个分担值的亚纯函数的密指量的相对增长性,证明了对于C中的判别的非常数亚纯函数(fz),g(z),如果aj(j=1,2,3,4)为其判别的分担值,其中a4是其CM分担值,且■λ>2/3,ER+,mesE<+∞且(r,f)>λT(r,f)(r■E),则有(2/3+o(1))Σ(N(r,g=aj) j from 1 to 4)≤Σ(N(r,f=aj) j from 1 to 4)≤(2/3+o(1))Σ(N(r,g=aj) j from 1 to 4)(r■E;r→∞)。 相似文献
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《洛阳师范学院学报》2015,(8):23-25
极限lim x→0sinx/x=1说明当x→0时,sinx≈x,这其实是函数f(x)=sinx在x0=0处的一次近似式,一般地,如果函数在x0处可导,则其一次近似式为f(x)≈f(x0)+f'(x0)(x-x0),误差为x-x0的高阶无穷小.为了进一步减小误差,提高精确度,扩大使用范围,就需要使用泰勒公式:f(x)=f(x0)+f'(x0)(x-x0)+f″(x0)/2!(xx0)2+…+f(n)(x0)/n!(x-x0)n+f(n+1)(ξ)/(n+1)!(x-x0)n+1,其中ξ在x0和x之间. 相似文献
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利用NevanLinna的亚纯函数的值分布理论,研究了超越亚纯函数微分多项式的值分布理论,取得以下主要结果:若f(z)是复平面上超越严亚纯函数,m、n和k都是正整数,且n≥2,Qj[f](j=1,2…,m)为f(z)的微分单项式,Q[f]=sum from j=1 to m ()aj(z)Qj[f]为f(z)的拟微分多项式,aj(z)是f(z)的小函数,令F(z)=Q[f](f(k)(z))n-c,则T(T,f(k)≤k+1/n(k=1)/(R,1/Q[F]+(r,1/F)+S(r,f)) 相似文献
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本文我们得到以下结果定理:设f(z),a_j(z)是复平面C上的亚纯函数,若a_1,…,a_q各自满足则对于任何正数ε>0,我们有 m(r,f)+sum from j=1 to q m(r,1/f-a_j)≤(2+ε)T(r,f)-1/n N(r,1/W)-1/n m(r,(L(f))~n/W)+S(r,f)这里L(f)和W是由如下两个朗斯基行列式所定义 相似文献
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文章研究了亚纯函数的唯一性,得到了关于亚纯函数f(z)和g(z)分担5个小函数的一个唯一性定理. 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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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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《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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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