共查询到19条相似文献,搜索用时 46 毫秒
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复Banach空间中单位球上双全纯凸映射的偏差定理 总被引:1,自引:0,他引:1
本文讨论一般复Banach空间上单位球B的Caratheodory度量和Kobayashi 度量的性质,并据此将Cn(n≥1)中单位球Bn上双全纯凸映射的矩阵形式偏差定理 推广到一般复Banach空间的单位球B上. 相似文献
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在Cn中的有界拟凸Hartogs域Ω上,存在一个自然的K?hler度量gΩ.该文将研究有界拟凸Hartogs域(Ω,hgΩ)到复空间形式的全纯等距嵌入映射的存在性问题. 相似文献
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本文讨论强凸性、L-kR,LωR和(G)性质之间的关系,指出强凸性介于LωR和(G)性质之间,证明光滑的有(G)性质的Banach空间是强凸的,此外指出存在一个Banach空间X,它是LωR但对任意自然数k,X不是L-kR. 相似文献
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假定Ω是Cn中具有C2定义函数的有界平衡拟凸域.本文证明Ω上的每一星形映射f能表示成Schwarz映射的极限形式.作为应用,得到有界平衡拟凸域上星形映射的增长定理.最后给出星形映射的一个的等价刻画. 相似文献
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假定Ω是Cn中具有C2定义函数的有界平衡拟凸域本文证明Ω上的每一星形映射f能表示成schwarz映射的极限形式.作为应用,得到有界平衡拟凸域上星形映射的增长定理.最后给出星形映射的一个的等价刻画. 相似文献
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Banach空间中凸映照的增长定理 总被引:9,自引:1,他引:9
本文利用凸映照的几何特征证明了一般复Banach空间中单位球上正规化双全纯凸映照的增长定理,即||f(x)||≤||x||/(1-||x||),A↓x∈B,对复内积空间,上述估计是最佳的。 相似文献
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Suyalatu 《Journal of Mathematical Analysis and Applications》2004,298(1):45-56
In this paper, we introduce two types of new Banach spaces: k-super-strongly convex spaces and k-super-strongly smooth spaces. It is proved that these two notions are dual. We also prove that the class of k-super-strongly convexifiable spaces is strictly between locally k-uniformly rotund spaces and k-strongly convex spaces, and obtain some necessary and sufficient conditions of k-super-strongly convex space (respectively k-super-strongly smooth space). Also, for each k?2, it is shown that there exists a k-super-strongly convex (respectively k-super-strongly smooth) space which is not (k−1)-super-strongly convex (respectively (k−1)-super-strongly smooth) space. 相似文献
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This paper gives some relations and properties of several kinds of generalized convexity in Banach spaces. As a result, it proves that every kind of uniform convexity implies the Banach-Sakes property, and several notions of uniform convexity in literature are actually equivalent. 相似文献
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Huang Jianfeng Wang Yuanheng 《高校应用数学学报(英文版)》2007,22(3):311-315
This paper studies the convergence of the sequence defined by x0∈C,xn 1=αnu (1-αn)Txn,n=0,1,2,…, where 0 ≤αn ≤ 1, limn→∞αn = 0, ∑∞n=0 αn = ∞, and T is a nonexpansive mapping from a nonempty closed convex subset C of a Banach space X into itself. The iterative sequence {xn} converges strongly to a fixed point of T in the case when X is a uniformly convex Banach space with a uniformly Gateaux differentiable norm or a uniformly smooth Banach space only. The results presented in this paper extend and improve some recent results. 相似文献
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ZHONG Huaijie CHEN Dongxiao CHEN Jianlan Department of Mathematics Fujian Normal University Fuzhou China 《中国科学A辑(英文版)》2004,47(3):372-392
By providing several new varieties of G-M-type Banach spaces according todecomposable and compoundable properties, this paper discusses the operator structuresof these spaces and the K-theory of the algebra of the operators on these G-M-type Ba-nach spaces through calculation of the K-groups of the operator ideals contained in theclass of Riesz operators. 相似文献
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有界凸平衡域上的双全纯凸映照的判别准则 总被引:2,自引:2,他引:0
本文讨论Cn中有界强凸平衡域和凸平衡域上局部双全纯映照成为双全纯凸映照的充要条件,从而得到Reinhardt域Dp= 上双全纯凸映照的充要条件,其中Pj≥2(j=1,2,…,n). 相似文献
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Shigeo Kawai 《Geometriae Dedicata》1999,74(3):261-265
p-harmonic maps (p ' 2) between Riemannian manifolds are investigated. Some theorems of Liouville type are given for such maps when target manifolds have convex functions. 相似文献
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Jorge Mujica Paula Takatsuka 《Proceedings of the American Mathematical Society》2007,135(4):1141-1144
We show that if is a starlike domain in a Banach space and is a family of holomorphic functions on that omit two distinct values and is bounded at the origin, then is uniformly bounded on each -bounded set.