Hiramatsu Naoya 平松直哉

Researcher Number	20612039
Other IDs
Affiliation (Current)	2025: 岡山理科大学, 基盤教育センター, 准教授
Affiliation (based on the past Project Information) *help	2025: 岡山理科大学, 基盤教育センター, 准教授 2017 – 2023: 呉工業高等専門学校, 自然科学系分野, 准教授 2015 – 2016: 呉工業高等専門学校, 自然科学系分野, 講師
Review Section/Research Field	Principal Investigator Basic Section 11010:Algebra-related / Algebra
Keywords	Principal Investigator Cohen-Macaulay加群 / 加算表現型 / 加算CM表現型 / 表現型 / コーエン・マコーレー加群 / Krull-Gabriel次元 / 極大Cohen-Macaulay加群 / 関手圏 / 極大コーエン・マコーレー加群 / 退化 … More / 表現スキーム / 次数付き極大コーエン・マコーレー加群 / module variety / Gorenstein環 / 安定圏 / 可算無限表現型 / 三角圏 / 有限表現型 / 行列表現 / グロタンディック群 Less

表現スキームと圏上の両側加群を用いたコーエン・マコーレー加群の構造解析Principal Investigator
- Principal Investigator
  
  平松直哉
- Project Period (FY)
  2025 – 2028
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  Okayama University of Science
Analysis of the Topological Structure of the functor category of Cohen-Macaulay modules and its applications to representation types of algebrasPrincipal Investigator
- Principal Investigator
  
  平松直哉
- Project Period (FY)
  2021 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  National Institute of Technology (KOSEN), Kure College
Structure Analysis of a Category of Cohen--Macaulay Modules by the Representation SchemePrincipal Investigator
- Principal Investigator
  
  Hiramatsu Naoya
- Project Period (FY)
  2018 – 2022
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 11010:Algebra-related
- Research Institution
  National Institute of Technology (KOSEN), Kure College
Study on Cohen-Macaulay modules by degeneration theory and its applications to representation types of algebrasPrincipal Investigator
- Principal Investigator
  
  Hiramatsu Naoya
- Project Period (FY)
  2015 – 2018
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Algebra
- Research Institution
  Kure National College of Technology

All 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015

All Journal Article Presentation

[Journal Article] The spectrum of the category of maximal Cohen-Macaulay modules2024
- Author(s)
  Naoya HIRAMATSU
- Journal Title
  
  Proceedings of the 55th Symposium on Ring Theory and Representation Theory
  
  Volume: 55 Pages: 20-25
- Data Source
  KAKENHI-PROJECT-21K03213
[Journal Article] Krull-Gabriel dimension of Cohen-Macaulay modules over hypersurfaces of type (A_∞)2022
- Author(s)
  Naoya Hiramatsu
- Journal Title
  
  Proceedings of the 53rd Symposium on Ring Theory and Representation Theory
  
  Volume: 53 Pages: 80-86
- Open Access
- Data Source
  KAKENHI-PROJECT-21K03213
[Journal Article] Krull-Gabriel dimension of Cohen-Macaulay modules over hypersurfaces of type (A_∞)2022
- Author(s)
  Naoya Hiramatsu
- Journal Title
  
  Proceedings of the 53rd Symposium on Ring Theory and Representation Theory
  
  Volume: 53 Pages: 80-86
- Open Access
- Data Source
  KAKENHI-PROJECT-18K13399
[Journal Article] Geometry of varieties for graded maximal Cohen--Macaulay modules2021
- Author(s)
  Hiramatsu Naoya
- Journal Title
  
  manuscripta mathematica
  
  Volume: - Issue: 1-2 Pages: 377-384
- DOI
  10.1007/s00229-021-01282-x
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13399
[Journal Article] A remark on graded countable Cohen-Macaulay representation type2020
- Author(s)
  Hiramatsu Naoya
- Journal Title
  
  Proceedings of the 52nd Symposium on Ring Theory and Representation Theory
  
  Volume: 52 Pages: 21-25
- Data Source
  KAKENHI-PROJECT-18K13399
[Journal Article] A note on graded countable Cohen-Macaulay representation type2020
- Author(s)
  Hiramatsu Naoya
- Journal Title
  
  Proceedings of the 41st Japan Symposium on Commutative Algebra
  
  Volume: 41 Pages: 14-18
- Data Source
  KAKENHI-PROJECT-18K13399
[Journal Article] A topology on the set of isomorphism classes of maximal Cohen--Macaulay modules2020
- Author(s)
  Hiramatsu Naoya、Takahashi Ryo
- Journal Title
  
  Proceedings of the American Mathematical Society
  
  Volume: 148 Issue: 6 Pages: 2359-2369
- DOI
  10.1090/proc/14965
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K13399, KAKENHI-PROJECT-16H03923, KAKENHI-PROJECT-16K05098, KAKENHI-PROJECT-16KK0099, KAKENHI-PROJECT-19K03443
[Journal Article] Degenerations over (A∞)-singularities and construction of degenerations over commutative rings2019
- Author(s)
  Hiramatsu Naoya、Takahashi Ryo、Yoshino Yuji
- Journal Title
  
  Journal of Algebra
  
  Volume: 525 Pages: 374-389
- DOI
  10.1016/j.jalgebra.2018.12.031
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-16K05098, KAKENHI-PROJECT-16H03923, KAKENHI-PROJECT-15K17527, KAKENHI-PROJECT-26287008, KAKENHI-PROJECT-19K03443, KAKENHI-PROJECT-19K03448, KAKENHI-PROJECT-16KK0099
[Journal Article] Irreducible components of the topological space of Cohen-Macaulay modules2019
- Author(s)
  平松直哉, 高橋亮
- Journal Title
  
  第40回可換環論シンポジウム報告集
  
  Volume: 40 Pages: 71-78
- Data Source
  KAKENHI-PROJECT-18K13399
[Journal Article] Degenerations of Cohen-Macaulay modules via matrix representations2018
- Author(s)
  平松直哉
- Journal Title
  
  Proceedings of the 50th Symposium on Ring Theory and Representation Theory
  
  Volume: 50 Pages: 54-59
- Data Source
  KAKENHI-PROJECT-15K17527
[Journal Article] On relations for Grothendieck groups of Gorenstein rings2017
- Author(s)
  Naoya Hiramatsu
- Journal Title
  
  Proceedings of The 38th symposium on commutative Algebra in Japan
  
  Volume: 38 Pages: 112-115
- Open Access
- Data Source
  KAKENHI-PROJECT-15K17527
[Journal Article] On the stable hom relation and stable degenerations of Cohen?Macaulay modules2017
- Author(s)
  Hiramatsu Naoya
- Journal Title
  
  Journal of Pure and Applied Algebra
  
  Volume: 222 Issue: 9 Pages: 2609-2625
- DOI
  10.1016/j.jpaa.2017.10.010
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15K17527
[Journal Article] Relations for Grothendieck groups of Gorenstein rings2017
- Author(s)
  Naoya Hiramatsu
- Journal Title
  
  Proceedings of the American Mathematical Society
  
  Volume: 145 Issue: 2 Pages: 559-562
- DOI
  10.1090/proc/13255
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-15K17527
[Journal Article] On the relations for Grothendieck groups of Cohen-Macaulay modules over Gorenstein rings2017
- Author(s)
  Naoya Hiramatsu
- Journal Title
  
  Proceedings of the 49-th Symposium on Ring Theory and Representation Theory
  
  Volume: 49 Pages: 28-30
- Open Access
- Data Source
  KAKENHI-PROJECT-15K17527
[Journal Article] On stable degenerations of Cohen-Macaulay modules over simple singularities of type (A_n)2016
- Author(s)
  Naoya Hiramatsu
- Journal Title
  
  Proceedings of The 37th symposium on commutative Algebra in Japan
  
  Volume: 37 Pages: 137-143
- Data Source
  KAKENHI-PROJECT-15K17527
[Journal Article] Stable degenerations of Cohen-Macaulay modules over simple singularities of type (A_n)2016
- Author(s)
  Naoya Hiramatsu
- Journal Title
  
  Proceedings of the 48th Symposium on Ring Theory and Representation Theory
  
  Volume: 48 Pages: 33-39
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] The spectrum of the category of maximal Cohen-Macaulay modules2023
- Author(s)
  Naoya Hiramatsu
- Organizer
  The 55th Symposium on Ring Theory and Representation Theory
- Data Source
  KAKENHI-PROJECT-21K03213
[Presentation] The spectrum of the category of maximal Cohen-Macaulay modules over complete Cohen-Macaulay local rings2023
- Author(s)
  Naoya Hiramatsu
- Organizer
  The 44th Japan Symposium on Commutative Algebra
- Data Source
  KAKENHI-PROJECT-21K03213
[Presentation] Krull-Gabriel dimension of Cohen-Macaulay modules over hypersurfaces of type (A_∞)2021
- Author(s)
  Naoya Hiramatsu
- Organizer
  第５３回環論および表現論シンポジウム
- Data Source
  KAKENHI-PROJECT-18K13399
[Presentation] Krull-Gabriel dimension of Cohen-Macaulay modules over hypersurfaces of type (A_∞)2021
- Author(s)
  Naoya Hiramatsu
- Organizer
  第５３回環論および表現論シンポジウム
- Data Source
  KAKENHI-PROJECT-21K03213
[Presentation] Krull-Gabriel dimension of Cohen--Macaulay modules over $(A_\infty)$-singularities2021
- Author(s)
  Naoya Hiramatsu
- Organizer
  東京可換環論セミナー
- Invited
- Data Source
  KAKENHI-PROJECT-18K13399
[Presentation] A remark on graded countable Cohen-Macaulay representation type2019
- Author(s)
  Hiramatsu Naoya
- Organizer
  The Eighth China - Japan - Korea International Symposium on Ring Theory Nagoya, JAPAN (2019)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13399
[Presentation] A note on graded countable Cohen-Macaulay representation type2019
- Author(s)
  Hiramatsu Naoya
- Organizer
  The 41st Japan Symposium on Commutative Algebra
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13399
[Presentation] Irreducible components of the topological space of Cohen-Macaulay modules2018
- Author(s)
  平松直哉, 高橋亮
- Organizer
  第40回可換環論シンポジウム
- Data Source
  KAKENHI-PROJECT-18K13399
[Presentation] Degenerations of Cohen- Macaulay modules via matrix representations2018
- Author(s)
  Naoya Hiramatsu
- Organizer
  The Workshop and 18th International Conference on Representations of Algebras
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] Degenerations of Cohen-Macaulay modules via matrix representations2017
- Author(s)
  平松直哉
- Organizer
  第50回環論および表現論シンポジューム
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] 0n degenerations of Cohen-Macaulay modules via matrix representations2017
- Author(s)
  平松直哉
- Organizer
  第39回可換環論シンポジウム
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] Degenerations of Cohen-Macaulay modules2017
- Author(s)
  Naoya Hiramatsu
- Organizer
  KU Algebra Seminar
- Place of Presentation
  カンザス大学（アメリカ）
- Invited
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] On relations for Grothendieck groups of Gorenstein rings2016
- Author(s)
  Naoya Hiramatsu
- Organizer
  第38回可換環論シンポジウム(The 9th Japan-Vietnam Joint Seminar on Commutative Algebra と合同開催)
- Place of Presentation
  IPC 生産性国際交流センター（神奈川県・葉山町）
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] Relations for Grothendieck groups of Gorenstein rings2016
- Author(s)
  Naoya Hiramatsu
- Organizer
  XVth International Conference on Representations of Algebras and Workshop
- Place of Presentation
  シラキュース大学（アメリカ）
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] On the relations for Grothendieck groups of Cohen-Macaulay modules over Gorenstein rings2016
- Author(s)
  平松直哉
- Organizer
  第４9回環論および表現論シンポジューム
- Place of Presentation
  大阪府立大学（大阪府・堺市）
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] Grothendeick群のリレーションに関するButler-Auslanderの定理の逆について2015
- Author(s)
  平松直哉
- Organizer
  岡山大学理学部代数セミナー
- Place of Presentation
  岡山大学
- Year and Date
  2015-11-26
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] On the contravariantly determinedness of a stable category of Cohen-Macaulay modules2015
- Author(s)
  平松直哉
- Organizer
  Ring Theory and Representation Theory Seminar in 2015
- Place of Presentation
  名古屋大学
- Year and Date
  2015-11-27
- Invited
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] Stable degenerations of Cohen-Macaulay modules over simple singularities of type (An)2015
- Author(s)
  平松直哉
- Organizer
  第48回環論および表現論シンポジューム
- Place of Presentation
  名古屋大学
- Year and Date
  2015-09-10
- Data Source
  KAKENHI-PROJECT-15K17527
[Presentation] On stable degenerations of Cohen-Macaulay modules over simple singularities of type (An)2015
- Author(s)
  平松直哉
- Organizer
  第37回可換環論シンポジウム
- Place of Presentation
  倉敷シーサイドホテル
- Year and Date
  2015-11-22
- Data Source
  KAKENHI-PROJECT-15K17527

1. TAKAHASHI Ryo

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Hiramatsu Naoya 平松 直哉

Research Projects

Research Products

Co-Researchers

表現スキームと圏上の両側加群を用いたコーエン・マコーレー加群の構造解析Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Analysis of the Topological Structure of the functor category of Cohen-Macaulay modules and its applications to representation types of algebrasPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Structure Analysis of a Category of Cohen--Macaulay Modules by the Representation SchemePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study on Cohen-Macaulay modules by degeneration theory and its applications to representation types of algebrasPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] The spectrum of the category of maximal Cohen-Macaulay modules2024

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[Journal Article] Krull-Gabriel dimension of Cohen-Macaulay modules over hypersurfaces of type (A_∞)2022

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[Journal Article] Krull-Gabriel dimension of Cohen-Macaulay modules over hypersurfaces of type (A_∞)2022

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[Journal Article] Geometry of varieties for graded maximal Cohen--Macaulay modules2021

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[Journal Article] A remark on graded countable Cohen-Macaulay representation type2020

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[Journal Article] A note on graded countable Cohen-Macaulay representation type2020

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[Journal Article] A topology on the set of isomorphism classes of maximal Cohen--Macaulay modules2020

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[Journal Article] Degenerations over (A∞)-singularities and construction of degenerations over commutative rings2019

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[Journal Article] Irreducible components of the topological space of Cohen-Macaulay modules2019

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[Journal Article] Degenerations of Cohen-Macaulay modules via matrix representations2018

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[Journal Article] On relations for Grothendieck groups of Gorenstein rings2017

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[Journal Article] On the stable hom relation and stable degenerations of Cohen?Macaulay modules2017

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Hiramatsu Naoya 平松直哉