Ito Masatoshi 伊藤公智

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Masatoshi ITO 伊藤公智

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Researcher Number	00510702
Other IDs
Affiliation (Current)	2025: 前橋工科大学, 工学部, 教授
Affiliation (based on the past Project Information) *help	2021 – 2023: 前橋工科大学, 工学部, 教授 2016 – 2020: 前橋工科大学, 工学部, 准教授
Review Section/Research Field	Principal Investigator Basic analysis
Keywords	Principal Investigator 関数解析学 / 作用素エントロピー / 作用素単調関数 / 作用素平均 / 作用素不等式

Research Projects
(1 results)
Research Products
(39 results)

Research on operator inequalities via operator means and applications to quantum information theoryPrincipal Investigator
- Principal Investigator
  
  Masatoshi ITO
- Project Period (FY)
  2016 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Basic analysis
- Research Institution
  Maebashi Institute of Technology

All 2024 2023 2022 2021 2020 2019 2018 2017 2016

All Journal Article Presentation

[Journal Article] A family of weighted operator means including the weighted Heinz and Lehmer means2022
- Author(s)
  Ito Masatoshi
- Journal Title
  
  Annals of Functional Analysis
  
  Volume: 13 Issue: 4
- DOI
  10.1007/s43034-022-00216-2
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Furuta type inequalities related to Ando-Hiai inequality with negative powers2021
- Author(s)
  Masatoshi ITO and Eizaburo KAMEI
- Journal Title
  
  Scientiae Mathematicae Japonicae
  
  Volume: 84 Pages: 23-32
- NAID
  130008102393
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] A new family of weighted operator means including the weighted Heron, logarithmic and Heinz means2020
- Author(s)
  Ito Masatoshi
- Journal Title
  
  Journal of Mathematical Inequalities
  
  Volume: 14 Issue: 1 Pages: 175-186
- DOI
  10.7153/jmi-2020-14-13
- NAID
  40022810373
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Estimations of the weighted power mean by the Heron mean2019
- Author(s)
  伊藤公智
- Journal Title
  
  作用素平均を利用した作用素の構造解析の研究と関連する話題, 京都大学数理解析研究所講究録
  
  Volume: 2113 Pages: 127-139
- Open Access
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Velocity and acceleration on the paths A \natural_{t} B and A \sharp_{t,r} B2019
- Author(s)
  H. Isa, M. Ito, E. Kamei, H. Tohyama and M. Watanabe
- Journal Title
  
  Scientiae Mathematicae Japonicae
  
  Volume: 82 Pages: 7-17
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Estimations of the weighted power mean by the Heron mean and related inequalities for determinants and traces2019
- Author(s)
  Ito Masatoshi
- Journal Title
  
  Mathematical Inequalities & Applications
  
  Volume: 22 Issue: 3 Pages: 949-966
- DOI
  10.7153/mia-2019-22-64
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Estimations of the Lehmer mean by the Heron mean and their generalizations involving refined Heinz operator inequalities2018
- Author(s)
  Ito Masatoshi
- Journal Title
  
  Advances in Operator Theory
  
  Volume: 3 Issue: 4 Pages: 763-780
- DOI
  10.15352/aot.1801-1303
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] On the n-th generalized operator valued divergences2018
- Author(s)
  伊佐浩史, 伊藤公智, 亀井栄三郎, 遠山宏明, 渡邉雅之
- Journal Title
  
  Banach空間に基づく技法による作用素論の最近の研究と関連する話題, 京都大学数理解析研究所講究録
  
  Volume: 2073 Pages: 63-71
- Open Access
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Upper and lower bounds, and operator monotonicity of an extension of the Petz-Hasegawa function2018
- Author(s)
  Furuta Takayuki、Ito Masatoshi、Yamazaki Takeaki、Yanagida Masahiro
- Journal Title
  
  Mathematical Inequalities & Applications
  
  Volume: 21 Issue: 1 Pages: 155-164
- DOI
  10.7153/mia-2018-21-13
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Bounds and operator monotonicity of a generalized Petz-Hasegawa function2018
- Author(s)
  伊藤公智, 古田孝之, 柳田昌宏, 山崎丈明
- Journal Title
  
  Banach空間に基づく技法による作用素論の最近の研究と関連する話題, 京都大学数理解析研究所講究録
  
  Volume: 2073 Pages: 55-62
- Open Access
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Some operator divergences based on Petz-Bregman divergence2017
- Author(s)
  H. Isa, M. Ito, E. Kamei, H. Tohyama and M. Watanabe
- Journal Title
  
  Scientiae Mathematicae Japonicae
  
  Volume: 80 Pages: 161-170
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Estimations of power difference mean by Heron mean2017
- Author(s)
  Ito Masatoshi
- Journal Title
  
  Journal of Mathematical Inequalities
  
  Volume: 11 Issue: 3 Pages: 831-843
- DOI
  10.7153/jmi-2017-11-64
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Velocity and acceleration at a point of the path A ♯_{t,r} B2017
- Author(s)
  伊佐浩史, 伊藤公智, 亀井栄三郎, 遠山宏明, 渡邉雅之
- Journal Title
  
  作用素論に基づく量子情報理論の幾何学的構造に関する研究と関連する話題, 京都大学数理解析研究所講究録
  
  Volume: 2033 Pages: 158-167
- Open Access
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Estimations of power difference mean by Heron mean2017
- Author(s)
  伊藤公智
- Journal Title
  
  作用素論に基づく量子情報理論の幾何学的構造に関する研究と関連する話題, 京都大学数理解析研究所講究録
  
  Volume: 2033 Pages: 9-21
- Open Access
- Data Source
  KAKENHI-PROJECT-16K05181
[Journal Article] Some operator divergences based on Petz-Bregman divergence2016
- Author(s)
  伊佐浩史, 伊藤公智, 亀井栄三郎, 遠山宏明, 渡邉雅之
- Journal Title
  
  作用素の平均とその関連, 京都大学数理解析研究所講究録
  
  Volume: 1996 Pages: 1-12
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Inequalities among the weighted Heinz mean and related ones2024
- Author(s)
  伊藤公智
- Organizer
  日本数学会2024年度年会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Families of weighted operator means related to the weighted logarithmic and Heinz means2023
- Author(s)
  伊藤公智
- Organizer
  作用素論・作用素環論研究集会
- Invited
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] A family of weighted operator means including the weighted Heinz and Lehmer means2021
- Author(s)
  伊藤公智
- Organizer
  日本数学会2021年度秋季総合分科会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Furuta type inequalities related to Ando-Hiai inequality with negative powers2020
- Author(s)
  伊藤公智, 亀井栄三郎
- Organizer
  日本数学会2020年度年会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] A new family of weighted operator means including the weighted Heron, logarithmic and Heinz means2019
- Author(s)
  伊藤公智
- Organizer
  日本数学会2019年度秋季総合分科会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] A new family of weighted operator means including the weighted Heron, logarithmic and Heinz means2019
- Author(s)
  伊藤公智
- Organizer
  RIMS共同研究（公開型）「順序を用いた作用素の構造研究と関連する話題」
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of the weighted power mean by the Heron mean and related inequalities for determinants and traces2019
- Author(s)
  Masatoshi ITO
- Organizer
  The 22nd ILAS Conference 2019
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of the Lehmer mean by the Heron mean and their generalizations involving refined Heinz operator inequalities2018
- Author(s)
  Masatoshi ITO
- Organizer
  Mathematical Inequalities and Applications 2018
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of the weighted power mean by the Heron mean2018
- Author(s)
  伊藤公智
- Organizer
  RIMS共同研究（公開型）「作用素平均を利用した作用素の構造解析の研究と関連する話題」
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of the weighted power mean by the Heron mean2018
- Author(s)
  伊藤公智
- Organizer
  日本数学会2018年度秋季総合分科会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Bounds and operator monotonicity of a generalized Petz-Hasegawa function2017
- Author(s)
  伊藤公智, 古田孝之, 柳田昌宏, 山崎丈明
- Organizer
  RIMS共同研究（公開型）「BANACH空間に基づく技法による作用素論の最近の研究と関連する話題」
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] On n-th generalized operator valued divergences2017
- Author(s)
  伊佐浩史, 伊藤公智, 亀井栄三郎, 遠山宏明, 渡邉雅之
- Organizer
  RIMS共同研究（公開型）「BANACH空間に基づく技法による作用素論の最近の研究と関連する話題」
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Relative operator entropies and operator valued divergences via divided difference2017
- Author(s)
  遠山宏明, 伊佐浩史, 伊藤公智, 亀井栄三郎, 渡邉雅之
- Organizer
  日本数学会2017年度年会
- Place of Presentation
  首都大学東京南大沢キャンパス（東京都八王子市）
- Year and Date
  2017-03-25
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Some results on estimations of the power difference mean and related ones2017
- Author(s)
  伊藤公智
- Organizer
  作用素論・作用素環論研究集会 2017
- Invited
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] The n-th divergence on the path A \natural_{t} B2017
- Author(s)
  遠山宏明, 伊佐浩史, 伊藤公智, 亀井栄三郎, 渡邉雅之
- Organizer
  日本数学会2017年度秋季総合分科会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of power difference mean by Heron mean2017
- Author(s)
  Masatoshi ITO
- Organizer
  The 21st ILAS Conference 2017
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of the Lehmer mean by the Heron mean2017
- Author(s)
  伊藤公智
- Organizer
  日本数学会2017年度秋季総合分科会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Upper and lower bounds, and operator monotonicity of an extension of the Petz-Hasegawa function2017
- Author(s)
  山崎丈明, 伊藤公智, 古田孝之, 柳田昌宏
- Organizer
  日本数学会2017年度秋季総合分科会
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Velocity and acceleration at a point of the path A ♯_{t,r} B2016
- Author(s)
  伊佐浩史, 伊藤公智, 亀井栄三郎, 遠山宏明, 渡邉雅之
- Organizer
  作用素論に基づく量子情報理論の幾何学的構造に関する研究と関連する話題
- Place of Presentation
  京都大学数理解析研究所（京都府京都市）
- Year and Date
  2016-11-11
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of power difference mean by Heron mean2016
- Author(s)
  伊藤公智
- Organizer
  日本数学会2016年度秋季総合分科会
- Place of Presentation
  関西大学千里山キャンパス（大阪府吹田市）
- Year and Date
  2016-09-16
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of power difference mean by Heron mean2016
- Author(s)
  伊藤公智
- Organizer
  第41回関東作用素論セミナー
- Place of Presentation
  東京理科大学神楽坂キャンパス（東京都新宿区）
- Year and Date
  2016-12-24
- Invited
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Velocity and acceleration at a point of the path A ♯_{t,r} B2016
- Author(s)
  伊佐浩史, 伊藤公智, 亀井栄三郎, 遠山宏明, 渡邉雅之
- Organizer
  日本数学会2016年度秋季総合分科会
- Place of Presentation
  関西大学千里山キャンパス（大阪府吹田市）
- Year and Date
  2016-09-16
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Estimations of power difference mean by Heron mean2016
- Author(s)
  伊藤公智
- Organizer
  作用素論に基づく量子情報理論の幾何学的構造に関する研究と関連する話題
- Place of Presentation
  京都大学数理解析研究所（京都府京都市）
- Year and Date
  2016-11-09
- Data Source
  KAKENHI-PROJECT-16K05181
[Presentation] Current topics on relative operator entropies and operator divergences2016
- Author(s)
  渡邉雅之, 伊佐浩史, 伊藤公智, 亀井栄三郎, 遠山宏明
- Organizer
  作用素論・作用素環論研究集会
- Place of Presentation
  前橋工科大学（群馬県前橋市）
- Year and Date
  2016-10-09
- Invited
- Data Source
  KAKENHI-PROJECT-16K05181

Ito Masatoshi 伊藤 公智

Masatoshi ITO 伊藤 公智

Research Projects

Research Products

Research on operator inequalities via operator means and applications to quantum information theoryPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] A family of weighted operator means including the weighted Heinz and Lehmer means2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Furuta type inequalities related to Ando-Hiai inequality with negative powers2021

Author(s)

Journal Title

NAID

Data Source

[Journal Article] A new family of weighted operator means including the weighted Heron, logarithmic and Heinz means2020

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Estimations of the weighted power mean by the Heron mean2019

Author(s)

Journal Title

Data Source

[Journal Article] Velocity and acceleration on the paths A \natural_{t} B and A \sharp_{t,r} B2019

Author(s)

Journal Title

Data Source

[Journal Article] Estimations of the weighted power mean by the Heron mean and related inequalities for determinants and traces2019

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Estimations of the Lehmer mean by the Heron mean and their generalizations involving refined Heinz operator inequalities2018

Author(s)

Journal Title

DOI

Data Source

[Journal Article] On the n-th generalized operator valued divergences2018

Author(s)

Journal Title

Data Source

[Journal Article] Upper and lower bounds, and operator monotonicity of an extension of the Petz-Hasegawa function2018

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Bounds and operator monotonicity of a generalized Petz-Hasegawa function2018

Author(s)

Journal Title

Data Source

[Journal Article] Some operator divergences based on Petz-Bregman divergence2017

Author(s)

Journal Title

Data Source

[Journal Article] Estimations of power difference mean by Heron mean2017

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Velocity and acceleration at a point of the path A ♯_{t,r} B2017

Author(s)

Journal Title

Data Source

[Journal Article] Estimations of power difference mean by Heron mean2017

Author(s)

Journal Title

Data Source

[Journal Article] Some operator divergences based on Petz-Bregman divergence2016

Author(s)

Journal Title

Data Source

[Presentation] Inequalities among the weighted Heinz mean and related ones2024

Author(s)

Ito Masatoshi 伊藤公智

Masatoshi ITO 伊藤公智