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本文定义了ε星形映照族,用统一的观点来处理复Banach空间、Cn及C中的各种区域上的凸映照族与星形映照族,研究它们之间是如何过渡的,并讨论了其判别准则及Roper-Suffridge算子. 相似文献
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复Banach空间中C-R方程的全纯解 总被引:3,自引:0,他引:3
二重复数是复数的一种推广,在其上的全纯映照族对应于C2上满足复Cauchy-Riemann方程的全纯映照族.可以证明,这样的映照族本质上是由二个单复变数的全纯函数的直乘积所组成的族.本文证明:即使在Banach空间中,Cauchy-Riemann方程的全纯解,具有同样的性质. 相似文献
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Let C be the familiar class of normalized close-to-convex functions in the unit disk.In [17],Koepf demonstrated that,as to a function ■ in the class C,■By applying this inequality,it can be proven that ‖a3|-|a2‖≤ 1 for close-to-convex functions.Now we generalized the above conclusions to a subclass of close-to-starlike mappings defined on the unit ball of a complex Banach space. 相似文献
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Abstract In this article, we extend the definition of uniformly starlike functions and uni- formly convex functions on the unit disk to the unit ball in C^n, give the discriminant criterions for them, and get some inequalities for them. 相似文献
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Bohr's type inequalities are studied in this paper: if f is a holomorphic mapping from the
unit ball B^n to B^n, f(0)=p, then we have sum from k=0
to∞|DφP(P)[D^kf(0)(z^k)]|/k!||DφP(P)||〈1 for|z|〈max{1/2+|P|,(1-|p|)/2^1/2andφ_P
∈Aut(B^n) such thatφ_(p)=0. As corollaries of the above estimate, we obtain some sharp Bohr's type
modulus inequalities. In particular, when n=1 and |P|→1, then our theorem reduces to a classical
result of Bohr. 相似文献
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该文将几个全纯函数空间的定义从单复变数推广到多复变数, 这些空间中全纯函数的增长性依赖于某个权函数. 作者研究了它们的增长性与边界值的关系以及这些空间相互之间的对偶关系, 所用方法和技巧与单复变数有不少区别. 所得到的结论是单复变数许多已知结果的推广. 相似文献