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hasegawa keizou  長谷川 敬三

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… Alternative Names

HASEGAWA Keizo  長谷川 敬三

長谷川 敬三  ハセガワ ケイゾウ

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Researcher Number 00208480
Other IDs
Affiliation (Current) 2025: 新潟大学, 人文社会科学系, フェロー
2025: 大阪大学, 大学院理学研究科, 招へい教授
Affiliation (based on the past Project Information) *help 2025: 大阪大学, 大学院理学研究科, 招へい教授
2022 – 2023: 大阪大学, 大学院理学研究科, 招へい教授
2021 – 2023: 新潟大学, 人文社会科学系, フェロー
2020 – 2021: 大阪大学, 理学研究科, 招へい教授
2020: 新潟大学, 教育学部, フェロー … More
2019: 新潟大学, 人文社会科学系, フェロー
2018: 新潟大学, 人文社会科学系, 教授
2009 – 2017: Niigata University, 人文社会・教育科学系, 教授
2013: 新潟大学, 人文社会教育科学系, 教授
2011: 新潟大学, 人文社会教育科学系, 教授
2010: 新潟大学, 人文社会・教育系, 教授
2010: 新潟大学, 人文社会教育科学系, 准教授
2007 – 2009: Niigata University, Institute of Humanities , Social Sciences and Education, Associate Professor
2008: 新潟大学, 人文社会・教育系, 准教授
2005 – 2006: 新潟大学, 人文社会・教育科学系, 助教授
2002 – 2004: 新潟大学, 教育人間科学部, 助教授
1993: 新潟大学, 教育学部, 助教授 Less
Review Section/Research Field
Principal Investigator
Geometry / Basic Section 11020:Geometry-related
Except Principal Investigator
Geometry / Geometry / Basic Section 11020:Geometry-related
Keywords
Principal Investigator
局所共形ケーラー構造 / ケーラー構造 / Vaisman構造 / 等質多様体 / CR構造 / ユニモジュラー・リー群 / 佐々木構造 / 複素構造 / 一般化された複素構造 / 四元数構造 … More / リー群 / Hopf多様体 / ユニモジュ ラー・リー環 / カルタン接続 / 複素幾何学 / 等質佐々木多様体 / 等質ケーラー多様体 / ユニモジュラーリー群 / ユニモジュラー群 / Vaismann多様体 / 佐々木多様体 / 局所共形ケーラー多様体 / Heisenbergリー群 / 冪零リー群 / Kaehler structures / complex structures / homogeneous manifolds / 擬ケーラー構造 / 左不変複素構造 / 可解多様体 / 国際研究者交流 (ドイツ, ロシア) / 等質局所共形ケーラー構造 / 可解Lie群 / 簡約Lie群 / homogeneous complex / conformal Kaehler / Burstall-Rawsley予想 / 擬エルミート対称空間 / Lie変換群 / 非有界等質領域 / 局所等質空間 / 概複素構造 / 等質空間 / 複素多様体 … More
Except Principal Investigator
J-holomorphic curve / 佐々木構造 / ケーラー構造 / Homogeneous space / Einstein manifold / Almost complex structure / ケーラー多様体 / Goldberg conjecture / 6次元球面 / 概複素構造 / 可解多様体 / Walker計量 / 概ケーラー多様体 / 概超複素多様体 / J-正則曲線 / Goldberg予想 / 概複素多様体 / Sasaki manifold / Kaehler structure / LcK structure / 変換群 / 可微分剛性 / 微分トポロジー / 基本群 / 剛性 / 等質リーマン空間 / Solvmaniofd / fiber bundle / Group extension / Kaehler Manifold / Divisible discrete group / 局所等質空間 / Heisenberg リー群 / ,Seifert fibering, / 半単純リー群 / Heisenberg Lie 群 / 佐々木多様体 / CR多様体 / 正則変換群 / 可微分qc-変換群Aut(X) / 四元数Heisenberg Lie 群 / 三つのReeb場 / 四元数コンタクト多様体 / 擬エルミート多様体 / 幾何多様体 / 四元数変換群 / 等長変換群 / Iterated infrasolv tower / Seifert 多様体 / 可解ファイバー / 群コホモロジー / リー群 / 固有作用 / 可縮空間 / Smooth toral actions / Infrasolv manifolds / Proper action / Large symmetry / Solvable radical / Infra-solv tower / Divisible manifold / Aspherical manifold / 等長群 / リー群と等質空間 / Infra-可解タワー / 幾何的剛性 / 非球形多様体 / 群の対称性 / 幾何構造 / Vaisman / LCK / Reductive group / Modification / Sasaki structure / Heisenberg Lie group / LCK structure / Unimodular group / Isometry group / Kaehler structurer / Holomorphic Isometry / Unimodular Lie group / Seifert fibering / Sasaki homogeneous space / Vaisman structure / Walker metric / Solvmanifold / 6-dimensional sphere / Kaehler manifold / Weierstrass-Bryant公式 / 超極小J-正則曲線 / 概Hypercomplex(擬)エルミート多様体 / スカラー曲率 / Goldbergの予想 / Walker manifold / Six dimensional sphere / Benson-Gordon予想 / Solvable group / Almost Kaehler manifold / Blair-Ianus汎関数 / Spin(7) / アインシュタイン多様体 / CR-submanifold / Nearly Kahler 6-dimensional sphere / Einstein metric / (Almost) Kahler manifold / Integrability / Almost complex manifold / リッチ固有値 / 四元数構造 / 概エルミート構造 / Goldherg予想 / CR-部分多様体 / Nearlyケーラー6次元球面 / アインシュタイン計量 / (概)ケーラー多様体 / 積分可能性 / Homogeneous / Holomorphic / Infrasolv manifold / Complex contact / Seifert fibration / Lorentz structure / lcK structure / complex contact / infranil manifold / Bott tower / Weyl curvature / Lightlike vector field / Conformally flat / Fefferman metric / Lorentz structure / 平坦 / Uniformization / Holonomy / Developing / ローレンツ幾何学 / 擬リーマン幾何学 / LCR構造 / 非球形空間 / ファイバー空間 / 小畠の定理 / CR構造 / Fefferman-Lorentz structure / Homogeneous manifold / Rigidity / Conformal structure / Vague conjecture / 因果性 / Parabolic構造 / Lorentz構造 / Fefferman / Seifertファイバー空間 / 可解等質空間 / 微分幾何学 / 幾何学 / モンジュ=アンペール方程式 / 複素解析幾何 / トーリック微分幾何 / 偏極射影代数多様体 / 佐々木アインシュタイン計量 / テスト配位 / Donaldson-Tian-Yau予想 / K-安定性 / Ricci soliton / 複素多様体 / HNN分解 / Seifert膜 / 結び目 / 無限群 / 多様体 Less
  • Research Projects

    (14 results)
  • Research Products

    (53 results)
  • Co-Researchers

    (33 People)
  •  Lie群および等質空間上の複素幾何構造とCartan接続Principal Investigator

    • Principal Investigator
      長谷川 敬三
    • Project Period (FY)
      2025 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      The University of Osaka
  •  Complex geometric structures and their moduli on Lie groups and homogeneous spacesPrincipal Investigator

    • Principal Investigator
      長谷川 敬三
    • Project Period (FY)
      2021 – 2024
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Osaka University
  •  Locally homogeneous Kaehler manifolds and Transformation groups

    • Principal Investigator
      Kamishima Yoshinobu
    • Project Period (FY)
      2018 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Josai University
  •  Complex geometric structures on homogeneous and locally homogeneous manifoldsPrincipal Investigator

    • Principal Investigator
      HASEGAWA KEIZO
    • Project Period (FY)
      2016 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
      Niigata University
  •  Locally homogeneous non-Kaehler manifolds and Transformation groups

    • Principal Investigator
      Kamishima Yoshinobu
    • Project Period (FY)
      2015 – 2017
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Josai University
  •  Study of Complex Structures and Conformal Geometric Structures on Homogeneous SpacesPrincipal Investigator

    • Principal Investigator
      HASEGAWA KEIZO
    • Project Period (FY)
      2013 – 2015
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  Topology of conformally flat Lorentz manifold and various geometric structures

    • Principal Investigator
      KAMISHIMA Yoshinobu
    • Project Period (FY)
      2012 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Josai University
      Tokyo Metropolitan University
  •  Complex structures on compact and non-compact homogeneous spacesPrincipal Investigator

    • Principal Investigator
      HASEGAWA Keizo
    • Project Period (FY)
      2009 – 2011
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  Geometry of Ricci solitons on complex manifolds

    • Principal Investigator
      MABUCHI Toshiki
    • Project Period (FY)
      2008 – 2012
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  Geometric structure on geometric manifolds which admit Lie group transformations and various Rigidity

    • Principal Investigator
      KAMISHIMA Yoshinobu
    • Project Period (FY)
      2008 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Tokyo Metropolitan University
  •  Astudy on complex and Kaehler structures on compact homogeneous manifoldsPrincipal Investigator

    • Principal Investigator
      HASEGAWA Keizo
    • Project Period (FY)
      2006 – 2007
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  Study of topis related to almost complex structures

    • Principal Investigator
      SEKGAWA Kouei
    • Project Period (FY)
      2004 – 2006
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  Geometry of Almost Complex Manifolds

    • Principal Investigator
      SEKIGAWA Kouei
    • Project Period (FY)
      2002 – 2003
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      NIIGATA UNIVERSITY
  •  無限群と多様体

    • Principal Investigator
      垣水 修
    • Project Period (FY)
      1993
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University

All 2023 2021 2020 2019 2017 2016 2015 2014 2011 2010 2009 2007 2006 Other

All Journal Article Presentation

  • [Journal Article] Unimodular Sasaki and Vaisman Lie groups2023

    • Author(s)
      Vicente Cortes and Keizo Hasegawa
    • Journal Title

      Mathematische Zeitschrift

      Volume: 303 Issue: 4

    • DOI

      10.1007/s00209-023-03233-6

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21K03248
  • [Journal Article] Homogeneous Sasaki and Vaisman manifolds of unimodular Lie groups2021

    • Author(s)
      D. Alekssevsky, K. Hasegawa, Y. Kamishima
    • Journal Title

      Nagoya Math. J.

      Volume: 243 Pages: 83-96

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03284
  • [Journal Article] Homogeneous Sasaki and Vaisman manifolds of unimodular Lie groups2019

    • Author(s)
      D. Alekseevsky, K. Hasegawa and Y. Kamishima
    • Journal Title

      Nagoya Mathematical Journal

      Volume: 8 Pages: 1-14

    • DOI

      10.1017/nmj.2019.34

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K05123
  • [Journal Article] Compact Homogeneous Locally Conformally K\"ahler Manifolds2016

    • Author(s)
      K. Hasegawa, Y. Kamishima
    • Journal Title

      Osaka J Math.

      Volume: *

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-15K04852
  • [Journal Article] Compact Homogeneous Locally Conformally K\"ahler Manifolds2016

    • Author(s)
      K. Hasegawa, Y. Kamishima
    • Journal Title

      Osaka J. Math.

      Volume: 53 Pages: 683-703

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-15K04852
  • [Journal Article] Compact Locally conformally Kaehler manifolds2016

    • Author(s)
      K. Hasegawa and Y. Kamishima
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 53

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-25400066
  • [Journal Article] Compact Locally conformally Kaehler manifolds,2016

    • Author(s)
      K. Hasegawa and Y. Kamishima,
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 53 Pages: 683-703

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-16K05123
  • [Journal Article] Homogeneous locally conformally Kaehler and Sasaki manifolds2015

    • Author(s)
      D. Alekseevsky, V. Cortes, K. Hasegawa and Y. Kamishima
    • Journal Title

      International Journal of Mathematics

      Volume: 26 Pages: 1-29

    • Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25400066
  • [Journal Article] Locally conformaly Kaehler structures on homogeneous spaces2015

    • Author(s)
      H. Hasegawa and Y. Kamishima
    • Journal Title

      Progress in Mathematics, Birkhuyser

      Volume: 308 Pages: 353-372

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24540087
  • [Journal Article] Locally Conformally Kaehler Structures on Homogeneous Spaces2015

    • Author(s)
      K. Hasegawa and Y. Kamishima
    • Journal Title

      Progress in Mathematics

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-25400066
  • [Journal Article] Homogeneous locally conformally Kähler and Sasaki manifolds2015

    • Author(s)
      D. V. Alekseevsky, V. Cortés, K. Hasegawa, Y. Kamishima
    • Journal Title

      International J Math.

      Volume: 26 (6) Pages: 1541001-29

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K04852
  • [Journal Article] Locally conformaly K\"ahler structures on homogeneous spaces2015

    • Author(s)
      K. Hasegawa , Y. Kamishima
    • Journal Title

      Progress in Mathematics

      Volume: 308 Pages: 353-372

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-15K04852
  • [Journal Article] Locally conformally Kaehler structures on homogeneous spaces2015

    • Author(s)
      K. Hasegawa and Y. Kamishima
    • Journal Title

      Progress in Mathematics

      Volume: 308 Pages: 353-372

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-25400066
  • [Journal Article] Homogeneous locally conformally Koehler and Sasaki manifolds2015

    • Author(s)
      D. Alekseevsky, V. Cortes, K. Hasegawa and Y. Kamishima
    • Journal Title

      International Journal of Mathematics

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-25400066
  • [Journal Article] Homogeneous Locally Conformally Kaehler and Sasaki Manifolds2015

    • Author(s)
      D. Alekseevsky, V. Cortes, K. Hasegawa, Y. Kamishima
    • Journal Title

      International Journal of Mathematics.

      Volume: 近刊

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24540087
  • [Journal Article] Locally conformaly Kaehler structures on homogeneous spaces2014

    • Author(s)
      Y. Kamishima and K. Hasegawa
    • Journal Title

      Progress in Math., Birkhauser

      Volume: **

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24540087
  • [Journal Article] Small deformations and non-left-invariant complex structures on six-dimensional compact solvmanifolds2010

    • Author(s)
      長谷川敬三
    • Journal Title

      Differential Geom.Appl. Vol.28

      Pages: 220-227

    • Data Source
      KAKENHI-PROJECT-20340013
  • [Journal Article] Small deformations and non-left-invariant complex structures on six-dimensional compact solvmanifolds2010

    • Author(s)
      K. Hasegawa
    • Journal Title

      Differential Geometry and its Applications

      Volume: Vol.28 Pages: 220-227

    • Data Source
      KAKENHI-PROJECT-21540073
  • [Journal Article] Small deformations and non-left-invariant complex structures on six-dimensional compact solvmanifolds2010

    • Author(s)
      Keizo Hasegawa
    • Journal Title

      Differential Geometry and its Applications Vol.28

      Pages: 220-227

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Journal Article] Small deformations and non-left-invariant complex structures on six-diensional compact solvmanifolds2010

    • Author(s)
      K.Hasegawa
    • Journal Title

      Diff. Geom. Appl.

      Volume: 28 Issue: 2 Pages: 220-227

    • DOI

      10.1016/j.difgeo.2009.10.003

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20244005
  • [Journal Article] Small deformations and non-left-invariant complex structures on six-dimensional compact solvmanifolds2010

    • Author(s)
      K.Hasegawa
    • Journal Title

      Differential Geom.Appl.

      Volume: 28 Pages: 220-227

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20244005
  • [Journal Article] Complex and Kahler structures on compact homogeneous manifolds-their existence, classification and moduli problem2009

    • Author(s)
      K. Hasegawa
    • Journal Title

      Advanced Studies in Pure Mathematics

      Volume: Vol.56 Pages: 151-168

    • Data Source
      KAKENHI-PROJECT-21540073
  • [Journal Article] Complex and Kaehler structures on compact homogeneous manifolds2009

    • Author(s)
      Keizo Hasegawa
    • Journal Title

      Advanced Studies and Pure Mathematics Vol.562

      Pages: 151-167

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Journal Article] Complex and Kahler structures on compact homogeneous manifolds-their existence, classification and moduli problem2009

    • Author(s)
      長谷川敬三
    • Journal Title

      Adv.Stud.Pure Math., 56, Math.Soc.Japan, Tokyo Vol.56,

      Pages: 151-167

    • Data Source
      KAKENHI-PROJECT-20340013
  • [Journal Article] Complex moduli and pseudo-Kaehler structures on three-dimensional compact complex solvmanifolds2007

    • Author(s)
      K. Hasegawa (長谷川 敬三)
    • Journal Title

      Electronic Research Announcements in Mathematical Sciences Vol.14

      Pages: 30-34

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Journal Article] Complex moduli and pseudo-Kaehler structures on three-dimensional compact complex solvmanifolds2007

    • Author(s)
      K, Hasegawa
    • Journal Title

      Electronic Research Announcements in Mathematical Sciences Vol.14

      Pages: 30-34

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Journal Article] Complex moduli and pseudo-Kaehler structures on three-dimensional compact complex solvmanifolds2007

    • Author(s)
      K. Hasegawa(長谷川 敬三)
    • Journal Title

      Electronic Research Announcements in Mathematical Sciences, Vol.14

      Pages: 30-34

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Journal Article] A note on compact solvmanifolds with Kaehler Structures2006

    • Author(s)
      K, Hasegawa
    • Journal Title

      Osaka Journal of Mathematics Vol.43

      Pages: 131-135

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Journal Article] A note on compact solvmanifolds with Kaehler structures2006

    • Author(s)
      K.Hasegawa
    • Journal Title

      Osaka Journal of Mathematics 43

      Pages: 131-135

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16540057
  • [Journal Article] A note on compact solvmanifolds with Kaehler structures2006

    • Author(s)
      K. Hasegawa(長谷川 敬三)
    • Journal Title

      Osaka Journal of Mathematics Vol.43

      Pages: 131-135

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Journal Article] A note on compact solvmanifolds with Kaehler structures2006

    • Author(s)
      長谷川 敬三
    • Journal Title

      Osaka Journal of Mathematics 43

      Pages: 131-135

    • Data Source
      KAKENHI-PROJECT-18540075
  • [Journal Article] A note on compact solvmanifolds with Kaehler structures2006

    • Author(s)
      K.Hasegawa
    • Journal Title

      Osaka I. Math. 43

      Pages: 131-135

    • Data Source
      KAKENHI-PROJECT-16540057
  • [Journal Article] A note on compact solmanifolds with Kaehler structures2006

    • Author(s)
      K.Hasegawa
    • Journal Title

      Osaka J. Math. 43

      Pages: 131-135

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16540057
  • [Journal Article] A note on compact solvmanifolds with Kaehler structures

    • Author(s)
      K.Hasegawa
    • Journal Title

      Osaka J.Math. (印刷中)

    • Data Source
      KAKENHI-PROJECT-16540057
  • [Presentation] Unimodular Sasaki and Vaisman Lie Geoups2023

    • Author(s)
      長谷川敬三
    • Organizer
      第29回複素幾何学シンポジウム (金沢)
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-21K03248
  • [Presentation] The quaternionic/hypercomplex-correspondence and its converse2021

    • Author(s)
      Kazuyuki Hasegawa
    • Organizer
      Special Geometry, Mirror Symmetry and Integral Systems (Waseda University, Toyko)
    • Data Source
      KAKENHI-PROJECT-21K03248
  • [Presentation] Sasaki and CR Lie groups - construction and classification problems2021

    • Author(s)
      Keizo Hasegawa
    • Organizer
      Special Geometry, Mirror Symmetry and Integral Systems (Waseda University, Toyko)
    • Data Source
      KAKENHI-PROJECT-21K03248
  • [Presentation] Sasaki and CR Lie groups - construction and classification problems2021

    • Author(s)
      Keizo Hasegawa
    • Organizer
      Special Geometry, Mirror Symmetry and Integrable Systems (Waseda Univeristy)
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K05123
  • [Presentation] Unimodular Sssaki and CR Lie groups2020

    • Author(s)
      長谷川敬三
    • Organizer
      幾何学セミナー,大阪大学理学研究科
    • Invited
    • Data Source
      KAKENHI-PROJECT-16K05123
  • [Presentation] Complete classification of unimodular Sasaki and vaisman Lie groups2019

    • Author(s)
      長谷川 敬三
    • Organizer
      第25回国際複素幾何学シンポジウム(金沢)
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K05123
  • [Presentation] Homogeneous Sasaki and Vaisman manifolds of unimodular Lie groups2017

    • Author(s)
      Keizo Hasegawa
    • Organizer
      Differential Geometry Seminar, University of Hamburg
    • Invited
    • Data Source
      KAKENHI-PROJECT-16K05123
  • [Presentation] Locally conformally Kaehler homogeneous spaces of unimodular Lie groups,2016

    • Author(s)
      K. Hasegawa
    • Organizer
      The 8-th TIMS-OCAMI-WASEDA Joint International Workshop on Differential Geometry and Geometric Analysis
    • Place of Presentation
      早稲田大学,東京
    • Year and Date
      2016-12-13
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K05123
  • [Presentation] Compact locally homogeneous Kaehler and lcK manifolds,2015

    • Author(s)
      長谷川敬三
    • Organizer
      第21回複素幾何学シンポジュウム
    • Place of Presentation
      金沢大学,石川県金沢市
    • Year and Date
      2015-10-28
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-25400066
  • [Presentation] Locally conformally ahler structures on homogeneous spaces, Geometric Structures on Complex Manifolds2011

    • Author(s)
      K. Hasegawa
    • Place of Presentation
      Steklov研究所(モスクワ)
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Presentation] Locally conformal Kaehler structures on homogeneous spaces2011

    • Author(s)
      長谷川敬三
    • Organizer
      国際研究集会「Geometric Structures on Complex Manifolds」
    • Place of Presentation
      Steklov Institute,モスクワ(招待講演)
    • Year and Date
      2011-10-05
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Presentation] Locally Conformal Kaehler Structures on Homogeneous Spaces2010

    • Author(s)
      長谷川敬三
    • Organizer
      Lie変換群と複素幾何学
    • Place of Presentation
      ナスパニューオータニ(越後湯沢)
    • Year and Date
      2010-09-29
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Presentation] Complex geometric structures on Lie groups and their compact quotient spaces2009

    • Author(s)
      長谷川敬三
    • Organizer
      Hayama Symposium on Several Complex Analysis in Several Variables
    • Place of Presentation
      湘南国際村センター(葉山)
    • Year and Date
      2009-07-21
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Presentation] Complex geometric structures on Lie groups and their compact quotient spaces2009

    • Author(s)
      K. Hasegawa
    • Organizer
      第13回多変数関数論葉山シンポジウム
    • Place of Presentation
      葉山
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Presentation] Locally conforamal Kaehler structures on homogeneous and locally homogenous spaces2009

    • Author(s)
      長谷川敬三
    • Organizer
      The 15^<th> International Symposium on Complex Geometry
    • Place of Presentation
      菅平高原(上田市)
    • Year and Date
      2009-10-31
    • Data Source
      KAKENHI-PROJECT-21540073
  • [Presentation] Complex Keahler structures on compact homogeneous manifolds-their existence, classification and moduli problem2007

    • Author(s)
      K, Hasegawa
    • Organizer
      Special lecture
    • Place of Presentation
      Mathematical Society of Japan
    • Year and Date
      2007-03-29
    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Presentation] Complex and Pseudo-Kaehler structures on compact homogeneous manifolds2007

    • Author(s)
      K. Hasegawa (長谷川 敬三)
    • Organizer
      Niigata Workshop on Complex Geometry and Singularities (新潟研究集会「複素幾何学と特異点」)
    • Place of Presentation
      新潟市クロスパルにいがた
    • Year and Date
      2007-08-21
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Presentation] Complex Keahler structures on compact homogeneous manifolds-their existence, classification and moduli problem2007

    • Author(s)
      長谷川 敬三
    • Organizer
      日本数学会年会幾何学分科会
    • Place of Presentation
      埼玉大学
    • Year and Date
      2007-03-29
    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-18540075
  • [Presentation] Non-Kaehler Geometric Structures on Homogeneous Spaces

    • Author(s)
      長谷川敬三
    • Organizer
      Complex Hyperbolic Geometry and Related Topics
    • Place of Presentation
      岡山理科大学
    • Year and Date
      2015-01-09 – 2015-01-11
    • Invited
    • Data Source
      KAKENHI-PROJECT-25400066
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