共查询到19条相似文献,搜索用时 46 毫秒
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利用复的Hilbert空间中的Riesz基{xj}及其对偶Riesz基{yj},引入新的算子Φ({xj},{yj},{gj})(z),来构造出复的Hilbert空间中的单位球β上的一些双全纯凸映照或双全纯星形映照,利用复的Hilbert 空间中的框架理论,得到此算子的一些性质,给出由复平面C中的单位圆△上的单叶凸函数或单叶星形函数,来构造复的Hilbert 空间X中的单位球β上的双全纯凸映照或双全纯星形映照的一些具体例子,同时也引入一些双全纯凸映照或双全纯星形映照的子类. 相似文献
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陈正 《数学年刊A辑(中文版)》1995,(2)
本文推广Cn中单位球Bn上的具形的全纯映照的概念,并应用由微分方程的解的唯一性来判断映照的单叶性的技巧,给出Cn中一类有界严格平衡域上局部双全纯映照成为双全纯(星)映照的充要条件. 相似文献
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本文讨论单位多圆柱△n={z=(z1,z2,…,zy ∈Cn:|z|=max |zj|<1}上正规化双全 纯星形映照的表示形式.证明对这种映照f的第j个分量fj,有fj=gjzj,(j=1,2,…,n),这里 (g1,g2,…,gn)'为△n上的全纯映照. 相似文献
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本文讨论单位多圆柱上正规化双全纯星形映照的表示形式.证明对这种映照f的第j个分量fj,有fj=gjzj,(J=1,2,…,n),这里(91,g2,…,gn)'为△n上的全纯映照. 相似文献
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有界凸圆型域上的准凸映照 总被引:6,自引:1,他引:6
本文研究星形映照的一类子族——有界凸圆型城上的准凸映照,并讨论了它与星形映照及凸映照的关系,建立其与凸映照同形的增长定理和掩盖定理. 相似文献
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LIU Tai-shun FENG Shu-xiaDepartment of Mathematics University of Science Technology of China Hefei China 《数学季刊》2004,19(1):1-5
In this paper, we will investigate convex domains and starlike domains which contain the image set of normalized holomorphic mappings on bounded starlike circular domains in Cn. 相似文献
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In this paper, we generalize the Roper–Suffridge operator on the extended Hartogs domains.By using the geometric properties and the growth theorems of subclasses of biholomorphic mappings,we obtain the generalized operators preserve the properties of parabolic and spirallike mappings of type β and order ρ, S*_Ω(β, A, B), almost starlike mapping of complex order λ on ΩN under different conditions, and thus we get the corresponding results on the unit ball B~n in C~n. The conclusions lead to some known results. 相似文献
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In this paper, we give a necessary and sufficient condition that a locally biholomorphic mapping f on the unit ball B in a complex Hilbert space X is a biholomorphic convex mapping, which improves some results of Hamada and Kohr and solves the problem which is posed by Graham and Kohr. From this, we derive some sufficient conditions for biholomorphic convex mapping. We also introduce a linear operator in purpose to construct some concrete examples of biholomorphic convex mappings on B in Hilbert spaces. Moreover, we give some examples of biholomorphic convex mappings on B in Hilbert spaces. 相似文献
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《复变函数与椭圆型方程》2012,57(4):291-301
In this paper, we obtain the growth result for normalized convex mappings on the unit ball of a complex Banach space. Also we give some bounds of coefficients and a distortion result for convex mappings on the unit ball of a complex Hilbert space. 相似文献
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关于局部双全纯映射的推广的Roper-Suffridge算子 总被引:11,自引:4,他引:11
§ 1. Introduction LetUbetheunitdiskinCandBnbetheunitballinCn.In 1 995 ,RoperandSuffridgeintroducedanextensionoperator.ThisoperatorisdefinedforanormalizedlocallybiholomorphicfunctionfonUbyΦn(f) (z) =F(z) =(f(z1 ) ,f′(z1 )z′) ,z =(z1 ,z′)∈Bn,(1 .1 )wherez1 ∈U ,z′=(z2 ,… ,zn)∈Cn- 1 ,andthebranchofthesquarerootischosensuchthatf′(0 ) =1 .TheRoper Suffridgeextensionoperatorhasthefollowingimportantproperties:(a)IffisanormalizedconvexfunctiononU ,thenFisanormalizedconvexmappingon… 相似文献