中文

交换Ritt$_E$算子族的$H^\infty$-函数演算与等距膨胀的联系

泛函分析 2026-06-26 v1

摘要

(T1,,Td)(T_1,\ldots,T_d)为某UMD Banach空间XX上交换的RittE_E算子dd-元组。我们证明(T1,,Td)(T_1,\ldots,T_d)具有有界HH^\infty-函数演算当且仅当对每个k=1,,dk=1,\ldots,d,TkT_kRR-RittE_E算子,且dd-元组(T1,,Td)(T_1,\ldots,T_d)在某UMD Banach空间YY上容许等距膨胀(U1,,Ud)(U_1,\ldots,U_d),使得(U1,,Ud)(U_1,\ldots,U_d)为多项式有界。在XX进一步具有性质(α)(\alpha)的情形下,我们建立了(T1,,Td)(T_1,\ldots,T_d)HH^\infty-函数演算性质基于等距膨胀的其他刻画。

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引用

@article{arxiv.2606.28214,
  title  = {Connecting $H^\infty$-functional calculus and isometric dilations for commuting families of Ritt$_E$ operators},
  author = {Christian Le Merdy and M. N. Reshmi},
  journal= {arXiv preprint arXiv:2606.28214},
  year   = {2026}
}