Geometric properties of the nonlinear resolvent of holomorphic generators

Geometric properties of the nonlinear resolvent of holomorphic generators
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全纯发生器非线性求解的几何性质

DOI:
10.1016/j.jmaa.2019.123614
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发表时间:
2020
影响因子:
1.3
通讯作者:
Sugawa Toshiyuki
Sugawa Toshiyuki
中科院分区:
数学3区
文献类型:
--
作者:
Elin Mark;Shoikhet David;Sugawa Toshiyuki

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设f是开单位圆盘Δ上全纯自映射单参数半群的无穷小生成元.我们的主要目的是研究非线性预解式族R(I+ r f)− 1:Δ→ Δ,r≥ 0的性质,在经典几何函数论的精神下。为了与这个理论联系起来,我们主要考虑f(0)= 0和f′(0)是正真实的数的情况。我们发现,特别是,R形成一个反Löwner链的双曲凸函数。此外,R的每个元素都满足Noshiro-Warschawski条件。这反过来又意味着R的每个元素也是Δ上单参数半群的无穷小生成元。我们还考虑R的元素的拟共形扩张。最后研究了这类不动点的排斥不动点的存在性。
Let f be the infinitesimal generator of a one-parameter semigroup of holomorphic self-mappings of the open unit disk Δ. Our main purpose is to study properties of the family R of non-linear resolvents (I+ r f)− 1: Δ→ Δ, r≥ 0, in the spirit of classical geometric function theory. To make a connection with this theory, we mostly consider the case where f (0)= 0 and f′(0) is a positive real number. We found, in particular, that R forms an inverse Löwner chain of hyperbolically convex functions. Moreover, each element of R satisfies the Noshiro-Warschawski condition. This, in turn, implies that each element of R is also the infinitesimal generator of a one-parameter semigroup on Δ. We consider also quasiconformal extensions of elements of R. Finally we study the existence of repelling fixed points of this family.
DOI: 10.1090/s0002-9939-06-08661-8
发表时间: 2007
期刊: --
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