NOZAWA HIRAKU 野澤啓

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Nozawa Hiraku 野澤啓

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Researcher Number	80706557
Other IDs
Affiliation (Current)	2025: 立命館大学, 理工学部, 教授
Affiliation (based on the past Project Information) *help	2015 – 2024: 立命館大学, 理工学部, 准教授 2023: 立命館大学, 理工学部, 教授 2014: 立命館大学, 理工学部, 助教
Review Section/Research Field	Principal Investigator Basic Section 11020:Geometry-related / Geometry
Keywords	Principal Investigator 群作用 / 葉層構造 / 力学系 / トポロジー / 剛性 / 剛性理論 / 微分位相幾何 / カオス / タイル張り / グラフ理論 … More / 対称空間 / 特性類 / タイル貼り / カントール集合 / フルネ標構 / 十分統計量 / 調和測度 / 微分幾何 / 情報幾何 / 特異点 / モース関数 / 低次元トポロジー / 3次元双曲多様体 / 準結晶 / コホモロジー / 極小部分多様体 / グラフ / リーマン幾何 / 3次元多様体 / 特性類国際情報交換（ドイツ、ブラジル） / 佐々木多様体国際情報交換（ドイツ、ブラジル） / 剛性国際情報交換（フランス） / 葉層構造国際情報交換フランスドイツブラジル / 位相幾何国際情報交換フランスドイツブラジル / Lie群作用 / Chern-Simons不変量 / 離散群 / 二次特性類 / 微分位相幾何学 / 佐々木幾何 / 局所化 Less

Research Projects
(4 results)
Research Products
(50 results)

Study of the global structure of foliations and foliated spacesPrincipal Investigator
- Principal Investigator
  
  野澤啓
- Project Period (FY)
  2024 – 2026
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Ritsumeikan University
Study of rigidity of foliations based on global geometry of leavesPrincipal Investigator
- Principal Investigator
  
  Nozawa Hiraku
- Project Period (FY)
  2020 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 11020:Geometry-related
- Research Institution
  Ritsumeikan University
On rigidity of foliations on 3-manifoldsPrincipal Investigator
- Principal Investigator
  
  Nozawa Hiraku
- Project Period (FY)
  2017 – 2019
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Ritsumeikan University
Research on rigidity of foliations and group actions based on characteristic classesPrincipal Investigator
- Principal Investigator
  
  Nozawa Hiraku
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Geometry
- Research Institution
  Ritsumeikan University

All 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014

All Journal Article Presentation

[Journal Article] Harmonic measures and rigidity for surface group actions on the circle2024
- Author(s)
  Masanori Adachi, Yoshifumi Matsuda, Hiraku Nozawa
- Journal Title
  
  Algebraic & Geometric Topology
  
  Volume: -
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03620
[Journal Article] An Ay-Le-Jost-Schwachhofer type characterization of quantitatively weakly sufficient statistics2024
- Author(s)
  Kaori Yamaguchi, Hiraku Nozawa
- Journal Title
  
  Springer Proceedings in Mathematics & Statistics
  
  Volume: 440 Pages: 249-257
- DOI
  10.1007/978-3-031-50586-7_13
- ISBN
  9783031505850, 9783031505867
- Data Source
  KAKENHI-PROJECT-20K03620
[Journal Article] Generalized Bishop frames of regular curves in E^42024
- Author(s)
  Subaru Nomoto, Hiraku Nozawa
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: 53 Issue: 1 Pages: 71-89
- DOI
  10.14492/hokmj/2022-611
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03620
[Journal Article] Generalized Bishop frams of regular curves in E^42022
- Author(s)
  Subaru Nomoto, Hiraku Nozawa
- Journal Title
  
  Hokkaido Mathematical Journal
  
  Volume: -
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K03620
[Journal Article] Wild Cantor actions2021
- Author(s)
  Jesus Antonio Alvarez Lopez, Ramon Barral Lijo;, Olga Lukina, Hiraku Nozawa
- Journal Title
  
  Journal of the Mathematical Society of Japan
  
  Volume: －
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Journal Article] Coarse distinguishability of graphs with symmetric growth2021
- Author(s)
  Jesus Antonio Alvarez Lopez, Ramon Barral Lijo, Hiraku Nozawa
- Journal Title
  
  Ars Mathematica Contemporanea
  
  Volume: － Issue: 1 Pages: #P1.06-#P1.06
- DOI
  10.26493/1855-3974.2354.616
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Journal Article] Chaotic Delone sets2021
- Author(s)
  Jesus Antonio Alvarez Lopez, Ramon Barral Lijo, John Hunton, Hiraku Nozawa, John R. Parker
- Journal Title
  
  Discrete & Continuous Dynamical Systems Series A
  
  Volume: 41(8) Issue: 8 Pages: 3781-3796
- DOI
  10.3934/dcds.2021016
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Journal Article] Dehn twist presentations of hyperelliptic periodic diffeomorphisms on closed surfaces2020
- Author(s)
  Hiraku Nozawa, Norihisa Takahashi
- Journal Title
  
  Kodai Mathematical Journal
  
  Volume: －
- NAID
  130007939987
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K14195
[Journal Article] Localization of Chern-Simons type invariants of Riemannian foliations2017
- Author(s)
  Oliver Goertsches, Dirk Toben, Hiraku Nozawa
- Journal Title
  
  Israel Journal of Mathematics
  
  Volume: 印刷中
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Harmonic measures and rigidity for surface group actions on the circle2024
- Author(s)
  Masanori Adachi, Yoshifumi Matsuda, Hiraku Nozawa
- Organizer
  Foliated Spaces, Tilings and Group Actions 2024
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] Harmonic measures and rigidity for the Fuchsian actions of surface groups on the circle2024
- Author(s)
  Masanori Adachi, Yoshifumi Matsuda, Hiraku Nozawa
- Organizer
  Low dimensional topology and number theory XV
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] Harmonic measures and rigidity for surface group actions on the circle2023
- Author(s)
  Masanori Adachi, Yoshifumi Matsuda, Hiraku Nozawa
- Organizer
  the Fourth International Workshop "Differential Geometric Structures and Applications"
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] 曲面群の円周への作用の剛性と調和測度について（足立真訓（静岡大），松田能文（青山学院大）との共同研究2023
- Author(s)
  足立正訓、松田能文、野澤啓
- Organizer
  第７０回トポロジーシンポジウム
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] Harmonic measures and rigidity for surface group actions on the circle2023
- Author(s)
  足立真訓，松田能文，野澤啓
- Organizer
  日本数学会2023年度年会
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] Rigidity for transverse foliations of Seifert 3-manifolds2022
- Author(s)
  足立真訓，松田能文，野澤啓
- Organizer
  葉層構造の幾何学とその応用
- Invited
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] カントール空間への同程度連続な群作用2022
- Author(s)
  Jesus Alvarez Lopez, Ramon Barral Lijo, Olga Lukina, Hiraku Nozawa
- Organizer
  接触構造、特異点、微分方程式及びその周辺
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] タイル張りやグラフに現れるカオスについて2022
- Author(s)
  Jesus Antonio Alvarez Lopez, Ramon Barral Lijo, John Hunton, Hiraku Nozawa, John Parker
- Organizer
  筑波大学談話会
- Invited
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] 重心写像とリー葉層構造2021
- Author(s)
  Gael Meigniez, Hiraku Nozawa
- Organizer
  接触構造、特異点、微分方程式及びその周辺
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] Chaotic colored graphs and foliated spaces2021
- Author(s)
  ラモンバラルリホ，野澤啓
- Organizer
  葉層構造論シンポジウム
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] 円周上の曲面束の横断的にアファインな葉層構造について2020
- Author(s)
  野澤啓, Gilbert Hector
- Organizer
  接触構造、特異点、微分方程式及びその周辺
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Rigidity of Lie foliations with locally symmetric leaves2020
- Author(s)
  Gael Meigniez, Hiraku Nozawa
- Organizer
  Topological Methods in Dynamics and Related Topics - 2020
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K03620
[Presentation] 円周上の曲面束の横断的にアファインな葉層構造について2020
- Author(s)
  野澤啓, Gilbert Hector
- Organizer
  金沢大学・学習院大学合同トポロジーセミナー
- Invited
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Rigidity of equicontinuous foliated spaces with locally symmetric leaves2019
- Author(s)
  Jesus Antonio Alvarez Lopez, Ramon Barral Lijo, 野澤啓
- Organizer
  Winter School of tilings and foliated spaces
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] On holomorphic Lefschetz number of the Reeb flow of toric Sasakian manifolds2019
- Author(s)
  Hiraku Nozawa
- Organizer
  International Symposium on Differential Models in Geometry
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] La cohomologia de Haefliger de foliaciones riemannianas completas2019
- Author(s)
  野澤啓
- Organizer
  Seminario de Geometria y Topologia
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Morse theory and rigidity for transversely affine foliations2019
- Author(s)
  Hiraku Nozawa, Gilbert Hector
- Organizer
  Topological Methods in Dynamics and Related Topics. Shilnikov Workshop
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] On the volume of toric Sasakian manifolds2019
- Author(s)
  Hiraku Nozawa
- Organizer
  Toric Topology 2019 in Okayama
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Localization of Chern-Simons type invariants of Sasakian manifolds2018
- Author(s)
  Oliver Goertsches, 野澤啓, Dirk Toeben
- Organizer
  The 3-rd International Workshop "Geometric Structures and Interdisciplinary Applications"
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] S^1上の曲面束上の余次元1葉層構造について2018
- Author(s)
  Gilbert Hector, 野澤啓
- Organizer
  第41回トポロジーセミナー
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Introduction to taut foliations on 3-manifolds I,II2018
- Author(s)
  Gilbert Hector, 野澤啓
- Organizer
  Advanced Course on Geometry, Topology and Global Analysis of Foliated Spaces
- Invited
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] 佐々木多様体のチャーン・サイモンズ型不変量の局所化について2018
- Author(s)
  Oliver Goertsches, 野澤啓, Dirk Toben
- Organizer
  第25回沼津改め静岡研究会
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Taut foliations on surface bundles over the circle2018
- Author(s)
  Gilbert Hector, 野澤啓
- Organizer
  Research Seminar of Research group "Differential Geometry and Analysis"
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Taut foliations on surface bundles over S^12018
- Author(s)
  Gilbert Hector, 野澤啓
- Organizer
  XXI Brazillian Topology Meeting
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] On the volume of Sasakian manifolds2018
- Author(s)
  Oliver Goertsches, 野澤啓, Dirk Toeben
- Organizer
  The XII-th International Conference Differential Geometry and Dynamical Systems
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Localizacion del volumen de variedades sasakianas2018
- Author(s)
  Oliver Goertsches, 野澤啓, Dirk Toeben
- Organizer
  Vidal Abascal Seminar
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] Taut foliations on surface bundles over the circle2018
- Author(s)
  Gilbert Hector, 野澤啓
- Organizer
  New trends on Foliated and Stratified Spaces: Topology, Geometry and Analysis. Commemorating the 70th birthday of Xose M. Masa
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] 円周上の曲面束のオイラー類が極大な葉層構造について2017
- Author(s)
  Gilbert Hector, 野澤啓
- Organizer
  葉層構造と微分同相群 2017 研究集会
- Data Source
  KAKENHI-PROJECT-17K14195
[Presentation] (G,X)-葉層構造の剛性と特性類について2016
- Author(s)
  野澤啓, Jesus Antonio Alvarez lopez, Gael Meigniez
- Organizer
  2016年日本数学会年会幾何学分科会特別講演
- Place of Presentation
  筑波大学（茨城県つくば市）
- Year and Date
  2016-03-17
- Invited
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Independent variation of secondary characteristic classes of Riemannian foliations2016
- Author(s)
  野澤　啓
- Organizer
  Foliations 2016
- Place of Presentation
  Research and Conference Centre in Bedlewo (Poland)
- Year and Date
  2016-07-16
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Topology of Sasakian manifolds and torus actions2016
- Author(s)
  Oliver Goertsches, 野澤啓, Dirk Toben
- Organizer
  第43回変換群論シンポジウム
- Place of Presentation
  姫路市市民会館（兵庫県姫路市）
- Year and Date
  2016-11-18
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] ケーラー葉層構造の特性類の変形について2016
- Author(s)
  野澤　啓
- Organizer
  葉層構造と微分同相群2016
- Place of Presentation
  東京大学玉原国際セミナーハウス（群馬県沼田市）
- Year and Date
  2016-10-20
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] ケーラー葉層の二次特性類の変形について2015
- Author(s)
  野澤啓
- Organizer
  研究集会「接触構造、特異点、微分方程式及びその周辺」
- Place of Presentation
  北海道旭川市市民ときわホール
- Year and Date
  2015-01-22
- Invited
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Property (T) and local rigidity of Riemannian foliations2015
- Author(s)
  野澤啓
- Organizer
  Group actions and metric embeddings
- Place of Presentation
  京都大学（京都府京都市）
- Year and Date
  2015-09-09
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] 葉層構造の二次特性類の有限的側面について I, II2015
- Author(s)
  野澤啓, Jesus Antonio Alvarez lopez,
- Organizer
  幾何学阿蘇研究集会
- Place of Presentation
  休暇村南阿蘇（熊本県阿蘇郡高森町）
- Year and Date
  2015-09-25
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Riemann葉層の剛性2014
- Author(s)
  Gael Meigniez, 野澤啓
- Organizer
  研究集会「葉層構造と微分同相群 2014」
- Place of Presentation
  東京大学玉原国際セミナーハウス（群馬県）
- Year and Date
  2014-10-20
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Lie 葉層の剛性について2014
- Author(s)
  Gael Meigniez, 野澤啓
- Organizer
  第61回幾何学シンポジウム
- Place of Presentation
  名城大学（愛知県）
- Year and Date
  2014-08-24
- Invited
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Lie葉層構造の剛性について2014
- Author(s)
  Gael Meigniez, 野澤啓
- Organizer
  京都大学微分トポロジーセミナー
- Place of Presentation
  京都大学理学部（京都府）
- Year and Date
  2014-10-28
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Rigidity of Riemannian foliations with locally symmetric leaves2014
- Author(s)
  Gael Meigniez, 野澤啓
- Organizer
  Workshop Geometry and Dynamics of Foliations
- Place of Presentation
  Instituto de Ciencias Matematicas (マドリッド,スペイン)
- Year and Date
  2014-09-02
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Lie葉層の剛性について2014
- Author(s)
  Gael Meigniez, 野澤啓
- Organizer
  東京大学幾何コロキウム
- Place of Presentation
  東京大学数理科学研究科（東京都）
- Year and Date
  2014-04-24
- Data Source
  KAKENHI-PROJECT-26800047
[Presentation] Riemann葉層のChern-Simons型不変量の局所化2014
- Author(s)
  Oliver Goertsches, 野澤啓, Dirk Toben
- Organizer
  日本数学会 2014年度秋季総合分科会
- Place of Presentation
  広島大学東広島キャンパス（広島県）
- Year and Date
  2014-09-27
- Data Source
  KAKENHI-PROJECT-26800047

NOZAWA HIRAKU 野澤 啓

Nozawa Hiraku 野澤 啓

Research Projects

Research Products

Study of the global structure of foliations and foliated spacesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study of rigidity of foliations based on global geometry of leavesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

On rigidity of foliations on 3-manifoldsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Research on rigidity of foliations and group actions based on characteristic classesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Harmonic measures and rigidity for surface group actions on the circle2024

Author(s)

Journal Title

Data Source

[Journal Article] An Ay-Le-Jost-Schwachhofer type characterization of quantitatively weakly sufficient statistics2024

Author(s)

Journal Title

DOI

ISBN

Data Source

[Journal Article] Generalized Bishop frames of regular curves in E^42024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Generalized Bishop frams of regular curves in E^42022

Author(s)

Journal Title

Data Source

[Journal Article] Wild Cantor actions2021

Author(s)

Journal Title

Data Source

[Journal Article] Coarse distinguishability of graphs with symmetric growth2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Chaotic Delone sets2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Dehn twist presentations of hyperelliptic periodic diffeomorphisms on closed surfaces2020

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Localization of Chern-Simons type invariants of Riemannian foliations2017

Author(s)

Journal Title

Data Source

[Presentation] Harmonic measures and rigidity for surface group actions on the circle2024

Author(s)

Organizer

Data Source

[Presentation] Harmonic measures and rigidity for the Fuchsian actions of surface groups on the circle2024

Author(s)

Organizer

Data Source

[Presentation] Harmonic measures and rigidity for surface group actions on the circle2023

Author(s)

NOZAWA HIRAKU 野澤啓

Nozawa Hiraku 野澤啓

[Presentation] 曲面群の円周への作用の剛性と調和測度について（足立真訓（静岡大），松田能文（青山学院大）との共同研究2023