A REFINEMENT OF THE SCHWARZ-PICK ESTIMATES AND THE CARATHÉODORY METRIC IN SEVERAL COMPLEX VARIABLES

  • Xiaosong LIU ,
  • Taishun LIU
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  • 1. School of Mathematics and Statistics, Lingnan Normal University, Zhanjiang 524048, China;
    2. Department of Mathematics, Huzhou University, Huzhou 313000, China
E-mail: tsliu@hutc.zj.cn

Received date: 2022-11-20

  Revised date: 2023-01-08

  Online published: 2024-08-30

Supported by

The first author's research was supported by the NSFC (11871257, 12071130) and the second author's research was supported by the NSFC (11971165).

Abstract

In this article, we first establish an asymptotically sharp result on the higher order Fréchet derivatives for bounded holomorphic mappings $f(x)=f(0)+\sum\limits_{s=1}^\infty\frac{D^{sk} f(0)(x^{sk})}{(sk) !}: B_X\rightarrow B_Y$, where $B_X$ is the unit ball of $X$. We next give a sharp result on the first order Fréchet derivative for bounded holomorphic mappings $f(x)=f(0)+\sum\limits_{s=k}^\infty\frac{D^{s} f(0)(x^{s})}{s !}: B_X\rightarrow B_Y$, where $B_X$ is the unit ball of $X$. The results that we derive include some results in several complex variables, and extend the classical result in one complex variable to several complex variables.

Cite this article

Xiaosong LIU , Taishun LIU . A REFINEMENT OF THE SCHWARZ-PICK ESTIMATES AND THE CARATHÉODORY METRIC IN SEVERAL COMPLEX VARIABLES[J]. Acta mathematica scientia, Series B, 2024 , 44(4) : 1337 -1346 . DOI: 10.1007/s10473-024-0409-3

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