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Studies on holomorphic mappings on the homogeneous unit ball in finite or infinite dimensional complex Banach spaces

Research Project

Project/Area Number 20K03640
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 12010:Basic analysis-related
Research InstitutionSenshu University

Principal Investigator

Honda Tatsuhiro  専修大学, 商学部, 教授 (20241226)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsブロック関数 / ブロック空間 / 有界対称領域 / 多重調和写像 / Bohr半径 / 劣多重調和関数 / α-Bloch space / Bounded symmetric domain / Compact operator / Composition operator / 有界多重調和写像 / 同次多項式展開 / holomorphic mapping / bounded symmetric domain / Banach space
Outline of Research at the Start

本研究においては、有限次元・無限次元複素バナッハ空間の等質単位球上の正則写像、および、それらの種々の評価を研究していきます。また、これらの関数が作る空間に関する様々な作用素の有界性やノルム評価を解明していきます。

Outline of Final Research Achievements

In this project, we considered weighted composition operators between the Hardy space and the Bloch-type space on the unit ball of the finite or infinite dimensional JB*-triple, and obtained necessary and sufficient conditions that the weighted composition operator is bounded or compact. In addition, in the research on composition operators between Bloch-type spaces, we gave necessary and sufficient conditions that the composition operator from α-Bloch space on the polydisc to β-Bloch space on the finite-dimensional bounded symmetric domain is bounded or compact.
On the other hand, we extended various results about the Bohr radii for holomorphic functions or harmonic functions on the unit disk to for holomorphic mappings or pluriharmonic mappings the unit ball of arbitrary complex Banach spaces.

Academic Significance and Societal Importance of the Research Achievements

等質単位球をもつ複素バナッハ空間は、JB*-tripleである。JB*-tripleは、ジョルダン3重積の構造を備えており、その単位開球は、有界対称領域と同値な領域である。したがって、本研究成果は、有界対称領域上の正則写像の結果へと直結する。
また、αブロック関数について、小林計量を用いてブロックセミノルムを定義して、無限次元空間までαブロック関数、αブロック空間の定義を拡張し、考察した。また、その応用として、有限次元の場合において、合成作用素・乗法作用素に関する様々な問題を解決し、無現次元の場合においても解明した。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Operators of the alfa-Bloch space on the open unit ball of a JB*-triple2022

    • Author(s)
      Honda Tatsuhiro
    • Journal Title

      Studia Universitatis Babes-Bolyai Matematica

      Volume: 67 Issue: 2 Pages: 317-328

    • DOI

      10.24193/subbmath.2022.2.08

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Boundary Distance Functions of Riemann Domains Over Pre-Hilbert Spaces2022

    • Author(s)
      Abe Makoto、Honda Tatsuhiro、Shima Tadashi
    • Journal Title

      Complex Analysis and Operator Theory

      Volume: 16-6 Issue: 6

    • DOI

      10.1007/s11785-022-01269-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Composition Operators of Bloch-Type Spaces on Bounded Symmetric Domains2021

    • Author(s)
      Hamada Hidetaka、Honda Tatsuhiro
    • Journal Title

      Complex Analysis and Operator Theory

      Volume: 16 Issue: 1

    • DOI

      10.1007/s11785-021-01182-8

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bohr phenomenon on the unit ball of a complex Banach space2020

    • Author(s)
      Hamada Hidetaka、Honda Tatsuhiro、Mizota Yusuke
    • Journal Title

      Mathematical Inequalities & Applications

      Volume: 23 Issue: 4 Pages: 1325-1341

    • DOI

      10.7153/mia-2020-23-98

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Composition operators from the α-Bloch space into the β-Bloch space in several complex variables2022

    • Author(s)
      本田竜広
    • Organizer
      日本数学会2022年度秋季総合分科会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Bloch-type Spaces on Bounded Symmetric Domains2022

    • Author(s)
      本田竜広
    • Organizer
      Workshop “Prospects of Theory of Riemann surfaces”
    • Related Report
      2022 Annual Research Report
  • [Presentation] Composition operators between Bloch-type spaces on the homogeneous unit balls2022

    • Author(s)
      本田竜広
    • Organizer
      Geometric Function Theory in Several Complex Variables and Complex Banach Spaces
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Composition operators on Bloch-type space2022

    • Author(s)
      本田竜広
    • Organizer
      The 18th ILJU School of Mathematics ; Banach Spaces and Related Topics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Bohr's phenomenon on a complex Banach space2020

    • Author(s)
      本田竜広、濱田英隆、溝田裕介
    • Organizer
      2020 年度日本数学会秋季総合分科会
    • Related Report
      2020 Research-status Report
  • [Remarks] 専修大学研究者情報システム  ホンダ タツヒロ HONDA Tatsuhiro

    • URL

      https://kjs.acc.senshu-u.ac.jp/sshhp/KgApp?resId=S001784

    • Related Report
      2022 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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