共查询到17条相似文献,搜索用时 93 毫秒
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翁东东 《赣南师范学院学报》2003,(6):10-11
在L.A.Rubel、C.C.Yang、Muse和Sleinmentz、AmerH.H.Al-Khalad等结论的基础上,讨论了关于整函数唯一性定理中分担值的问题,得到了一些新的结论. 相似文献
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证明了有穷下级非常数整函数f和g分担有穷的2个CM公共值的唯一性,替换了M.Ozawa所证定理中的条件,结论比M.Ozawa的结论更强. 相似文献
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证明了以2l为周期的可积函数若可展开成Fourier级数,则按其周期的不同倍数所展得的Fourier级数的形武必是惟一的. 相似文献
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周再禹 《兰州教育学院学报》2005,(2):49-50
整数的整除性的判定是数论中讨论的基本问题之一,对于整值函数的整除问题也可归结到这类题型中.本文从具体实例出发,分析总结出了几种证明整值函数整除问题的基本方法. 相似文献
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应用Nevanlinna理论讨论整函数的Borel例外孙函数的一些问题,结果表明:有穷正级超越整函数ψ(z)的准Borel例外孙函数的数目不超过2个。 相似文献
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SUN Yao-qiang MA Chao-wei 《重庆大学学报(英文版)》2007,6(4):287-290
The uniqueness problem of entire functions concerning weighted sharing was discussed, and the following theorem was proved. Let f and 8 be two non-constant entire functions, m, n and k three positive integers, and n〉2k+4. If Em(1,(f^n)^(k))= Em(1,(g^n)^(k)), then either f(z)=c1c^cz and 8(z)= c2c^cz or f=ts, where c, c1 and c2 are three constants satisfying (-1)^k(c1c2)^n(nc)^2k=], and t is a constant satisfying t^n=1. The theorem generalizes the result of Fang [Fang ML, Uniqueness and value sharing of entire functions, Computer & Mathematics with Applications, 2002, 44: 823-831]. 相似文献
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段曦盛 《重庆大学学报(英文版)》2003,2(2)
Introduction Let f and g be two meromorphic functions defined in the open complex plane C, and k be a nonnegative integer or infinity. For {}aC违U, denote by (;)kEaf the set of all a-points of f where an a-point of multiplicity m is counted m times if mk and otherwise k+1 times. If (;)(;)kkEafEag=, then, f and g are considered to share the value a with weight k, which is expressed by f and g share (a ,k). Clearly if f and g share (a ,k), then they share (a ,p) for all integer p in 0pk#. It… 相似文献
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LI Yun-tong CAO Yao 《重庆大学学报(英文版)》2007,6(4):283-286
The uniqueness problem of entire functions sharing one small function was studied. By Picard’s Theorem, we proved that for two transcendental entire functions f (z) and g(z), a positive integer n≥9, and a(z) (not identically eaqual to zero) being a common small function related to f (z) and g(z), if f n(z)(f(z)-1)f′(z) and gn(z)(g(z)-1)g′(z) share a(z) CM, where CM is counting multiplicity, then g(z) ≡ f (z). This is an extended version of Fang and Hong’s theorem [ Fang ML, Hong W, A unicity theorem for entire functions concerning differential polynomials, Journal of Indian Pure Applied Mathematics, 2001, 32 (9): 1343-1348]. 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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林珊华 《泉州师范学院学报》2011,29(2):37-42,54
从权弱分担的角度分析亚纯函数(或整函数)fn与其k阶导数[fn](k)的唯一性问题,得到f(n)=[fn](k)且f=cexp((λ/n)z)(c为非需常数,λk=1)的充分条件. 相似文献
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