Oi Shiho 大井志穂

Researcher Number	90891789
Other IDs
Affiliation (Current)	2026: 新潟大学, 自然科学系数理物質科学系列, 准教授
Affiliation (based on the past Project Information) *help	2024: 新潟大学, 自然科学系, 准教授 2021 – 2023: 新潟大学, 自然科学系, 助教
Review Section/Research Field	Principal Investigator Basic Section 12010:Basic analysis-related Except Principal Investigator Basic Section 12010:Basic analysis-related
Keywords	Principal Investigator 等距離写像 / 保存問題 / フーリエ環 / Banach環 / C＊環 / 全射等距離写像 / Jordan＊同型写像 / C環 / Jordan準同型写像 / 順序保存写像 / 準同型写像 / リプシッツ環 / バナッハ環 … More Except Principal Investigator … More 正則関数 / スペクトル / Banach空間 / 端点 / 2-local isometry / local isometry / local map / isometry / Mazur-Ulam property / Tingley's problem / 等距離写像 / 関数環 / 可換Banach環 Less

Preserver problems on Fourier algebras and related algebrasPrincipal Investigator
- Principal Investigator
  
  大井志穂
- Project Period (FY)
  2024 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12010:Basic analysis-related
- Research Institution
  Niigata University
Isometries on Banach algebrasPrincipal Investigator
- Principal Investigator
  
  Oi Shiho
- Project Period (FY)
  2021 – 2024
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 12010:Basic analysis-related
- Research Institution
  Niigata University
On spectrum preserving maps on Banach spaces and its application
- Principal Investigator
  
  Miura Takeshi
- Project Period (FY)
  2020 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 12010:Basic analysis-related
- Research Institution
  Niigata University

All 2025 2024 2023 2022 2021

All Journal Article Presentation

[Journal Article] Identification of Locally Compact Groups via the Metric Structure of the Groups of Invertible Elements in Fourier?Stieltjes Algebras2025
- Author(s)
  Hatori Osamu、Oi Shiho
- Journal Title
  
  Journal of Fourier Analysis and Applications
  
  Volume: 31 Issue: 3
- DOI
  10.1007/s00041-025-10168-5
- Data Source
  KAKENHI-PROJECT-24K06754
[Journal Article] Non-linear characterization of Jordan *-isomorphisms via maps on positive cones of C*-algebras2024
- Author(s)
  Osamu Hatori and Shiho Oi
- Journal Title
  
  Acta Scientiarum Mathematicarum
  
  Volume: - Issue: 1-2 Pages: 313-336
- DOI
  10.1007/s44146-024-00140-y
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03536, KAKENHI-PROJECT-24K06754
[Journal Article] Jordan $*$-homomorphisms on the spaces of continuous maps taking values in $C^*$-algebras2023
- Author(s)
  Oi Shiho
- Journal Title
  
  Studia Mathematica
  
  Volume: 269 Issue: 1 Pages: 107-119
- DOI
  10.4064/sm220210-19-6
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03650, KAKENHI-PROJECT-21K13804
[Journal Article] Isometries, Jordan *-isomorphisms and order isomorphisms on spaces of a unital $C^*$-algebra-valued continuous maps2023
- Author(s)
  Oi Shiho
- Journal Title
  
  RIMS Kokyuroku Bessatsu
  
  Volume: B93
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03650
[Journal Article] Isometries, Jordan *-isomorphisms and order isomorphisms on spaces of a unital C*-algebra-valued continuous maps2023
- Author(s)
  Oi Shiho
- Journal Title
  
  RIMS Kokyuroku Bessatsu
  
  Volume: B93 Pages: 133-141
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K13804
[Journal Article] Linear preservers on idempotents of Fourier algebras2023
- Author(s)
  Lin Ying-Fen、Oi Shiho
- Journal Title
  
  Canadian Mathematical Bulletin
  
  Volume: 66 Issue: 4 Pages: 1326-1340
- DOI
  10.4153/s0008439523000395
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Journal Article] ISOMETRIES AND HERMITIAN OPERATORS ON SPACES OF VECTOR-VALUED LIPSCHITZ MAPS2023
- Author(s)
  Oi Shiho
- Journal Title
  
  Journal of the Institute of Mathematics of Jussieu
  
  Volume: "" Issue: 4 Pages: 1-18
- DOI
  10.1017/s1474748023000415
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K13804
[Journal Article] Tingley's problems on uniform algebras2021
- Author(s)
  Hatori Osamu、Oi Shiho、Shindo Togashi Rumi
- Journal Title
  
  Journal of Mathematical Analysis and Applications
  
  Volume: 503 Issue: 2 Pages: 125346-125346
- DOI
  10.1016/j.jmaa.2021.125346
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19K03536, KAKENHI-PROJECT-20K03650, KAKENHI-PROJECT-21K13804
[Journal Article] A SPHERICAL VERSION OF THE KOWALSKI?S?ODKOWSKI THEOREM AND ITS APPLICATIONS2021
- Author(s)
  OI SHIHO
- Journal Title
  
  Journal of the Australian Mathematical Society
  
  Volume: 111 Issue: 3 Pages: 386-411
- DOI
  10.1017/s1446788720000452
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03650
[Presentation] Isometries between groups of invertible elements in Fourier-Stieltjes algebras2024
- Author(s)
  Shiho Oi
- Organizer
  International Workshop on Operator Theory and its Applications (IWOTA 2024)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K06754
[Presentation] Isometries between groups of invertible elements in Fourier-Stieltjes algebras2024
- Author(s)
  Shiho OI
- Organizer
  AMS Special Session on New Faces in Operator Theory and Function Theory, Joint Mathematics Meetings
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K06754
[Presentation] Surjective linear isometries on Banach algebras of continuous functions2024
- Author(s)
  Shiho Oi
- Organizer
  Trojan Math Seminar
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Isometries between groups of invertible elements in Fourier-Stieltjes algebras2024
- Author(s)
  Shiho Oi
- Organizer
  AMS Special Session on New Faces in Operator Theory and Function Theory, Joint Mathematics Meetings
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Surjective linear isometries on Banach algebras of continuous functions2024
- Author(s)
  Shiho Oi
- Organizer
  Trojan Math Seminar, Troy University
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K06754
[Presentation] Maps on unital Banach algebras preserving the spectrum2024
- Author(s)
  大井志穂
- Organizer
  京都作用素環セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-24K06754
[Presentation] Surjective Isometries of C*-algebras2024
- Author(s)
  Guerra, Jill E, Catherine Beneteau, Fernanda Botelho, Maria Cueto Avellaneda, Dijana Ilisevic, Sana Kazemi, Shiho Oi
- Organizer
  AWM Workshop: Women in Operator Theory, Joint Mathematics Meetings
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Additive spectrum preserving maps on Fourier algebras2024
- Author(s)
  Shiho Oi
- Organizer
  Recent Progress in Operator Theory and its Applications(RIMS 共同研究)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24K06754
[Presentation] An approach to the duality of positive cones of C * -algebras2024
- Author(s)
  大井志穂
- Organizer
  保存問題からみた関数環・関数空間論の最近の進展 (RIMS 共同研究)
- Data Source
  KAKENHI-PROJECT-24K06754
[Presentation] Maps on Unital Banach algebras preserving the spectrum2024
- Author(s)
  Shiho Oi
- Organizer
  数学科学学院学術報告Nankai University
- Invited
- Data Source
  KAKENHI-PROJECT-24K06754
[Presentation] C*環に値をとる連続写像のなすバナッハ環上の等距離写像2023
- Author(s)
  大井志穂
- Organizer
  第8 回山陰基礎論と数学およびその周辺の研究集会
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] フーリエ環のべき等元を保存する写像2023
- Author(s)
  大井志穂
- Organizer
  2023年度関数環研究集会
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] 行列値リプシッツ環上の全射線形等距離写像の代数的反射性2023
- Author(s)
  大井志穂
- Organizer
  2023年日本数学会年会
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Unital surjective linear isometries on Lipchitz algebras taking values in primitive C*-algebras2023
- Author(s)
  Shiho Oi
- Organizer
  Workshop on Function spaces and related topics
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] バナッハ環上の全射線形等距離写像について2023
- Author(s)
  大井志穂
- Organizer
  東京都立大学・幾何学セミナー
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] バナッハ環におけるノルム構造，代数構造，順序構造の関係2023
- Author(s)
  大井志穂
- Organizer
  日本数学会秋季総合分科会 2023 函数解析分科会　特別講演
- Invited
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Linear preservers on idempotents of Fourier algebras2023
- Author(s)
  Shiho Oi
- Organizer
  RIMS共同研究（公開型）Recent Progress in Operator Theory and its Applications
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] 行列値リプシッツ環上の全射線形等距離写像の代数的反射性2023
- Author(s)
  大井志穂
- Organizer
  2023年日本数学会年会
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Linear operators on Fourier algebras preserving idempotents2023
- Author(s)
  Shiho Oi
- Organizer
  The 6th Niigata Seminar
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] C*環値リプシッツ環の間の Jordan* 同型写像とその応用2022
- Author(s)
  大井志穂
- Organizer
  2022 年度関数環研究集会
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] C*環に値をとるリプシッツ関数のなすバナッハ環上の等距離写像2022
- Author(s)
  大井志穂
- Organizer
  第11 回信州関数解析シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] C*環に値をとる連続写像のなすバナッハ環上の保存問題2022
- Author(s)
  大井志穂
- Organizer
  第69回トポロジ―シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] C*環に値をとるリプシッツ環上のJordan* 準同型写像2022
- Author(s)
  大井志穂
- Organizer
  日本数学会 2022年度秋季総合分科会
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Surjective isometries and Hermitian operators on vector-valued Lipschitz algebras2022
- Author(s)
  Shiho Oi
- Organizer
  2022 Japan-China International Conference on matrix theory with applications
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Jordan *-homomorphisms on *-algebras of vector-valued continuous maps2022
- Author(s)
  Shiho Oi
- Organizer
  Operators on Banach algebras and related topics
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Kowalski-S\l odkowskiの定理と2-local等距離写像2022
- Author(s)
  大井志穂
- Organizer
  第 6 回幾何学的群論ワークショップ
- Invited
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] 2-local isometries on commutative Banach algebras2022
- Author(s)
  Shiho Oi
- Organizer
  Women in Operator Theory
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] リプシッツ写像のなすBanach 環の距離構造と代数構造2021
- Author(s)
  大井志穂
- Organizer
  2021年度ジェネラルトポロジーシンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-20K03650
[Presentation] C*環に値をとるリプシッツ環の間の等距離写像2021
- Author(s)
  大井志穂
- Organizer
  第60 回実函数論・函数解析学合同シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-20K03650
[Presentation] Surjective isometries on Banach algebras of Lipschitz maps taking values in a unital C*-algebra2021
- Author(s)
  Shiho Oi
- Organizer
  the 8th European Congress of Mathematics-8ECM, Minisymposum: Recent Developments on Preservers
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] C*環に値をとるリプシッツ環の間の等距離写像2021
- Author(s)
  大井志穂
- Organizer
  第60 回実函数論・函数解析学合同シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] 2-local isometries on commutative Banach algebras2021
- Author(s)
  大井志穂
- Organizer
  日本数学会
- Data Source
  KAKENHI-PROJECT-20K03650
[Presentation] リプシッツ写像のなすBanach 環の距離構造と代数構造2021
- Author(s)
  大井志穂
- Organizer
  2021年度ジェネラルトポロジーシンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] C*環に値をとる連続写像のなすバナッハ環上のJordan* 同型写像2021
- Author(s)
  大井志穂
- Organizer
  2021年度関数環研究集会
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] C*環に値をとる連続写像のなすバナッハ環上のJordan*同型写像2021
- Author(s)
  大井志穂
- Organizer
  2021年度関数環研究集会
- Data Source
  KAKENHI-PROJECT-20K03650
[Presentation] Surjective linear isometries on unital C*-algebra valued Lipschitz algebras2021
- Author(s)
  Shiho Oi
- Organizer
  Research on preserver problems on Banach algebras and related topics
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K13804
[Presentation] Surjective isometries on Banach algebras of Lipschitz maps taking values in a unital C*-algebra2021
- Author(s)
  Shiho Oi
- Organizer
  the 8th European Congress of Mathematics-8ECM
- Data Source
  KAKENHI-PROJECT-20K03650

1. Miura Takeshi (90333989)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
2. 羽鳥理

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results

Oi Shiho 大井 志穂

Research Projects

Research Products

Co-Researchers

Preserver problems on Fourier algebras and related algebrasPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Isometries on Banach algebrasPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

On spectrum preserving maps on Banach spaces and its application

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] Identification of Locally Compact Groups via the Metric Structure of the Groups of Invertible Elements in Fourier?Stieltjes Algebras2025

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Non-linear characterization of Jordan *-isomorphisms via maps on positive cones of C*-algebras2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Jordan $*$-homomorphisms on the spaces of continuous maps taking values in $C^*$-algebras2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Isometries, Jordan *-isomorphisms and order isomorphisms on spaces of a unital $C^*$-algebra-valued continuous maps2023

Author(s)

Journal Title

Data Source

[Journal Article] Isometries, Jordan *-isomorphisms and order isomorphisms on spaces of a unital C*-algebra-valued continuous maps2023

Author(s)

Journal Title

Data Source

[Journal Article] Linear preservers on idempotents of Fourier algebras2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] ISOMETRIES AND HERMITIAN OPERATORS ON SPACES OF VECTOR-VALUED LIPSCHITZ MAPS2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Tingley's problems on uniform algebras2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A SPHERICAL VERSION OF THE KOWALSKI?S?ODKOWSKI THEOREM AND ITS APPLICATIONS2021

Author(s)

Journal Title

DOI

Data Source

[Presentation] Isometries between groups of invertible elements in Fourier-Stieltjes algebras2024

Author(s)

Organizer

Data Source

[Presentation] Isometries between groups of invertible elements in Fourier-Stieltjes algebras2024

Author(s)

Organizer

Data Source

[Presentation] Surjective linear isometries on Banach algebras of continuous functions2024

Author(s)

Organizer

Data Source

[Presentation] Isometries between groups of invertible elements in Fourier-Stieltjes algebras2024

Author(s)

Organizer

Oi Shiho 大井志穂

[Journal Article] Non-linear characterization of Jordan -isomorphisms via maps on positive cones of C-algebras2024

[Journal Article] Jordan $$-homomorphisms on the spaces of continuous maps taking values in $C^$-algebras2023

[Journal Article] Isometries, Jordan -isomorphisms and order isomorphisms on spaces of a unital $C^$-algebra-valued continuous maps2023

[Journal Article] Isometries, Jordan -isomorphisms and order isomorphisms on spaces of a unital C-algebra-valued continuous maps2023

[Presentation] C*環に値をとる連続写像のなすバナッハ環上の等距離写像2023

[Presentation] 行列値リプシッツ環上の全射線形等距離写像の代数的反射性2023

[Presentation] 行列値リプシッツ環上の全射線形等距離写像の代数的反射性2023

[Presentation] C環値リプシッツ環の間の Jordan 同型写像とその応用2022