• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

OKUMA Tomohiro  奥間 智弘

ORCIDConnect your ORCID iD *help
… Alternative Names

奥間 智弘  オクマ トモヒロ

奧間 智弘  オクマ トモヒロ

Less
Researcher Number 00300533
Other IDs
Affiliation (Current) 2025: 山形大学, 理学部, 教授
Affiliation (based on the past Project Information) *help 2012 – 2023: 山形大学, 理学部, 教授
2011: 山形大学, 教育文化学部, 准教授
2007 – 2010: Yamagata University, 地域教育文化学部, 准教授
2005 – 2006: Yamagata University, Faculty of Education, Art, and Science, Associate Professor, 地域教育文化学部, 助教授
2005: GUNMA UNIVERSITY, Faculty of Education, Art and Science, Assistany Professor, 教育文化学部, 助教授 … More
2004: 群馬工業高等専門学校, 一般教科(自然科学系), 助教授
2002 – 2004: 群馬工業高等専門学校, 一般教育, 助教授
2000 – 2001: 群馬工業高等専門学校, 一般・講師
1999 – 2000: 群馬工業高等専門学校, 一般教科・自然科学, 講師
1999: Gunma Institute of Technology, lecturer, 一般教科, 講師
1999: 群馬興行高等専門学校, 一般教育, 講師
1998: 群馬工業高等専門学校, 一般教育, 講師 Less
Review Section/Research Field
Principal Investigator
Geometry / Basic Section 11020:Geometry-related / Geometry
Except Principal Investigator
Geometry / Geometry / Algebra / Basic analysis
Keywords
Principal Investigator
2次元特異点 / 幾何種数 / 2次元正規特異点 / good ideal / 重複度 / splice-quotient特異点 / 有理型特異点 / 普遍アーベル被覆 / 楕円型イデアル / normal reduction number … More / 正規正接錐 / 正規還元種数 / 特異点 / Brieskorn 完全交叉特異点 / 正規節減数 / 複素2次元特異点 / 2次元特異点 / 擬斉次特異点 / 有理ホモロジー球面 / アーベル被覆 / 埋め込み次元 / Seiberg-Witten不変量 / Casson不変量 / 種数公式 / End Curve Theorem / splice quotient 特異点 / splice type 特異点 / 完全交叉特異点 / 最小楕円型特異点 / 同時特異点解消 / 特異点の小変形 / 良特異点解消 / 多重種数 … More
Except Principal Investigator
特異点 / pencil genus / Pencil種数 / Kodaira singularity / Kodaira特異点 / singularity / 基本種数 / F-threshold / 巡回被覆特異点 / geometric genus / 基本サイクル / 代数曲線の退化族 / 幾何種数 / rational triple point / degeneration with C^*-action / singularity with C^*-action / degeneration of Riemann surfaces / Milnorモノドロミー群 / 局所モノドロミー群 / 複素乗法群 / 閉Riemann面の退化族 / 閉Riemann面 / 有理3重点 / C^*-作用を持つ退化族 / C^*-作用を持つ特異点 / Riemann面の退化族 / universal abelican covering / 2-dimensional singularity / 3-dimensional terminal singularity / elliptic singularity / filtered blowing-up / resolution of singularities / discrepancy / 3次元端末的特異点 / implicit differential systems / multiplierイデアル / 整閉イデアルの対数的特異点解消 / 2次元楕円型特異点 / 完全交叉性 / ベロネーゼ部分環 / 2次元特異点 / 普遍アーベル被覆 / 次元特異点 / 3次元端末特異点 / 楕円型特異点 / フィルター付きブロウイングアップ / 特異点解消 / families of compact algebraic curve / Pencil特異点 / 二 / 代数曲線退化族 / Kulikov singularity / cyclic covering / fundamental cycle / degenerate family of algebraic curves / normal singularity / complex analytic space / 二次元特異点 / Kulikov特異点 / 巡回被覆 / 正規特異点 / 複素解析空間 / curve / degeneration / 有限巡回被覆 / quasi-Kodaira特異点 / 曲線の退化 / 等質有界領域 / 連接層 / ツイスター空間 / 乗数イデアル層 / 解析的捩率 / ケーラー計量 / 複素多様体 / 放物型幾何 / 値分布論 / 乗数層イデアル / ベルグマン核 / ケーラー多様体 / アインシュタイン計量 / CR多様体 / 折り目付きレフシェッツ束 / カスプ / K-同値 / 符号数 / 複素射影平面 / 特異Lefschetz構造 / 障害類 / 同境理論 / 高さ関数 / 2次障害類 / 安定摂動 / モース写像 / 4次元有向同境群 / スペシャル・ジェネリック写像 / 特性類 / 位相不変量 / 曲面絡み目 / 多様体 / 接触 / レーブグラフ / 同境類 / 可微分写像 / 可微分多様体 / 可視化 / 多様体対 / ホモトピー原理 / 特異ファイバー / 同境 / 可微分構造 / 大域的特異点論 / 微分トポロジー Less
  • Research Projects

    (15 results)
  • Research Products

    (96 results)
  • Co-Researchers

    (33 People)
  •  複素2次元特異点の解析的不変量と構造に関する研究Principal Investigator

    • Principal Investigator
      奥間 智弘
    • Project Period (FY)
      2021 – 2025
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Yamagata University
  •  Topological types and analytic invariants of complex surface singularitiesPrincipal Investigator

    • Principal Investigator
      Okuma Tomohiro
    • Project Period (FY)
      2017 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Yamagata University
  •  A study of complex surface singularities with rational homology sphere linkPrincipal Investigator

    • Principal Investigator
      Okuma Tomohiro
    • Project Period (FY)
      2014 – 2016
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Yamagata University
  •  A study of complex surface singularities whose link is a rational homology spherePrincipal Investigator

    • Principal Investigator
      OKUMA Tomohiro
    • Project Period (FY)
      2011 – 2013
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Yamagata University
  •  New development of geometric complex analysis

    • Principal Investigator
      HIRACHI Kengo
    • Project Period (FY)
      2010 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Basic analysis
    • Research Institution
      The University of Tokyo
  •  A study of complex surface singularities with rational homology sphere linksPrincipal Investigator

    • Principal Investigator
      OKUMA Tomohiro
    • Project Period (FY)
      2008 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Yamagata University
  •  Global Theory of Singularities of Differentiable Maps and its Applications

    • Principal Investigator
      SAEKI Osamu
    • Project Period (FY)
      2007 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Kyushu University
  •  2次元特異点の普遍アーベル被覆についてPrincipal Investigator

    • Principal Investigator
      奥間 智弘
    • Project Period (FY)
      2006 – 2007
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Geometry
    • Research Institution
      Yamagata University
  •  2次元特異点の幾何種数と位相不変量の関係についてPrincipal Investigator

    • Principal Investigator
      奥間 智弘
    • Project Period (FY)
      2004 – 2005
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Geometry
    • Research Institution
      Yamagata University
      Gunma National College of Technology
  •  Filtered blowing-up of local rings and algebraic geometric classification of singularities

    • Principal Investigator
      TOMARI Masataka
    • Project Period (FY)
      2004 – 2005
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Algebra
    • Research Institution
      Nihon University
  •  The research of 2-dimensional complex singularities associated to degenerations of closed Riemann surfaces

    • Principal Investigator
      TOMARU Tadashi
    • Project Period (FY)
      2004 – 2005
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Gunma University
  •  On Pencil genus for normal surface singularities (II)

    • Principal Investigator
      TOMARU Tadashi
    • Project Period (FY)
      2002 – 2003
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Gunma University
  •  On pencil genus of 2-dimensional singularities

    • Principal Investigator
      TOMARU Tadashi
    • Project Period (FY)
      2000 – 2001
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Gunma University
  •  2次元正規特異点の多重種数についてPrincipal Investigator

    • Principal Investigator
      奥間 智弘
    • Project Period (FY)
      1999 – 2000
    • Research Category
      Grant-in-Aid for Encouragement of Young Scientists (A)
    • Research Field
      Geometry
    • Research Institution
      Gunma National College of Technology
  •  Research of Quasi-Kodaira singularities

    • Principal Investigator
      TOMARU Tadashi
    • Project Period (FY)
      1998 – 1999
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Gunma University

All 2024 2023 2022 2021 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 Other

All Journal Article Presentation

  • [Journal Article] The multiplicity of cyclic coverings of a singularity of an algebraic variety2024

    • Author(s)
      T. Kumagai and T. Okuma
    • Journal Title

      Tsukuba J. of Math.

      Volume: -

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Journal Article] Normal Hilbert coefficients and elliptic ideals in normal two-dimensional singularities2022

    • Author(s)
      Okuma, Tomohiro and Rossi, Maria Evelina and Watanabe, Kei-ichi and Yoshida, Ken-ichi
    • Journal Title

      Nagoya Mathematical Journal

      Volume: - Pages: 1-22

    • DOI

      10.1017/nmj.2022.5

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05216, KAKENHI-PROJECT-19K03430, KAKENHI-PROJECT-21K03215, KAKENHI-PROJECT-20K03522
  • [Journal Article] The normal reduction number of two-dimensional cone-like singularities2021

    • Author(s)
      Okuma, Tomohiro and Watanabe, Kei-ichi and Yoshida, Ken-ichi
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 149 (no. 11) Issue: 11 Pages: 4569-4581

    • DOI

      10.1090/proc/15565

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Journal Article] The normal reduction number of two-dimensional cone-like singularities2021

    • Author(s)
      Tomohiro Okuma, Kei-ichi Watanabe, and Ken-ichi Yoshida
    • Journal Title

      Proceedings of the AMS

      Volume: -

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Journal Article] Normal reduction numbers of normal surface singularities2021

    • Author(s)
      Okuma, Tomohiro
    • Journal Title

      Singularities and their interaction with geometry and low dimensional topology. In honor of Andras Nemethi on the occasion of his 60th birthday.

      Volume: - Pages: 159-179

    • DOI

      10.1007/978-3-030-61958-9_8

    • ISBN
      9783030619572, 9783030619589
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Journal Article] Weighted homogeneous surface singularities homeomorphic to Brieskorn complete intersections2021

    • Author(s)
      Okuma, Tomohiro
    • Journal Title

      Journal of Singularities

      Volume: 23

    • DOI

      10.5427/jsing.2021.23j

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05216, KAKENHI-PROJECT-21K03215
  • [Journal Article] Normal Reduction Numbers for Normal Surface Singularities with Application to Elliptic Singularities of Brieskorn Type2019

    • Author(s)
      Okuma Tomohiro、Watanabe Kei-ichi、Yoshida Ken-ichi
    • Journal Title

      Acta Mathematica Vietnamica

      Volume: 44 Issue: 1 Pages: 87-100

    • DOI

      10.1007/s40306-018-00311-4

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05216, KAKENHI-PROJECT-15H02057, KAKENHI-PROJECT-19K03430
  • [Journal Article] A characterization of two-dimensional rational singularities via core of ideals2018

    • Author(s)
      Okuma Tomohiro、Watanabe Kei-ichi、Yoshida Ken-ichi
    • Journal Title

      J. Algebra

      Volume: 499 Pages: 450-468

    • DOI

      10.1016/j.jalgebra.2017.11.053

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05216, KAKENHI-PROJECT-15H02057, KAKENHI-PROJECT-16K05110
  • [Journal Article] Cohomology of ideals in elliptic surface singularities2018

    • Author(s)
      T. Okuma
    • Journal Title

      Illinois J. Math.

      Volume: 61

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Journal Article] A remark on metrically conical surface singularities of Brieskorn type2017

    • Author(s)
      Tomohiro Okuma
    • Journal Title

      Saitama Mathematicakl Journal

      Volume: -

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Journal Article] Analytic singularities supported by a specific integral homology sphere link2017

    • Author(s)
      A. Nemethi and T. Okuma
    • Journal Title

      Methods Appl. Anal.

      Volume: 24, No. 2 Issue: 2 Pages: 303-320

    • DOI

      10.4310/maa.2017.v24.n2.a7

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05216, KAKENHI-PROJECT-15H02057
  • [Journal Article] Good ideals and $p_g$-ideals in a two-dimensional normal singularities2016

    • Author(s)
      T.Okuma, K. Watanabe, K. Yoshida
    • Journal Title

      Manuscripta mathematica

      Volume: 未定 Issue: 3-4 Pages: 499-520

    • DOI

      10.1007/s00229-016-0821-7

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-26400053, KAKENHI-PROJECT-26400064, KAKENHI-PROJECT-15H02057, KAKENHI-PROJECT-16K05110
  • [Journal Article] Rees algebras and pg-ideals in a two-dimensional normal local domain2016

    • Author(s)
      T. Okuma, Kei-ichi Watanabe and Ken-ichi Yoshida
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 未定

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Journal Article] The multiplicity of abelian covers of splice quotient singularities2015

    • Author(s)
      Tomohiro Okuma
    • Journal Title

      Math. Nachr.

      Volume: 288 Issue: 2-3 Pages: 343-352

    • DOI

      10.1002/mana.201010037

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Journal Article] The multiplicity of abelian covers of splice quotient  singularities2015

    • Author(s)
      T. Okuma
    • Journal Title

      Math. Nachr.

      Volume: 288

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Journal Article] THE MAXIMAL IDEAL CYCLES OVER COMPLETE INTERSECTION SURFACE SINGULARITIES OF BRIESKORN TYPE2014

    • Author(s)
      Fan-Ning Meng and Tomohiro Okuma
    • Journal Title

      Kyushu Journal of Mathematics

      Volume: 68 Issue: 1 Pages: 121-137

    • DOI

      10.2206/kyushujm.68.121

    • NAID

      130004941520

    • ISSN
      1340-6116, 1883-2032
    • Language
      English
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Journal Article] The maximal ideal cycles over complete intersection surface singularities of Brieskorn type2013

    • Author(s)
      Fan-Ning Meng and  T. Okuma
    • Journal Title

      Kyushu J. Math.

      Volume: 掲載確定

    • NAID

      130004941520

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Journal Article] Invariants of splice quotient singularities2012

    • Author(s)
      Tomohiro Okuma
    • Journal Title

      IRMA Lect. Math. Theor. Phys.

      Volume: 20 Pages: 149-159

    • DOI

      10.4171/118-1/9

    • ISBN
      9783037191187, 9783037196182
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Journal Article] Invariants of splice quotient singularities2012

    • Author(s)
      T.  Okuma
    • Journal Title

      IRMA Lect. Math. Theor. Phys.

      Volume: 20

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Journal Article] Another proof of the end curve theorem for normal surface singularities2010

    • Author(s)
      T.Okuma
    • Journal Title

      J.Math.Soc.Japan 62

      Pages: 1-11

    • NAID

      10026998794

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Journal Article] THE GEOMETRIC GENUS, THE CASSON INVARIANT CONJECTURE AND SPLICE TYPE SINGULARITIES2010

    • Author(s)
      T.Okuma
    • Journal Title

      DEMONSTRATIO MATHEMATICA No 2 Vol.43(印刷中)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Journal Article] The embedding dimension of weighted homogeneous surface singularities2010

    • Author(s)
      A.Nemethi, T.Okuma
    • Journal Title

      Journal of Topology

      Volume: 3 Pages: 643-667

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Journal Article] The geometric genus, the Casson invariant conjecture and splice type singularities2010

    • Author(s)
      T.Okuma
    • Journal Title

      Demnonstratio Math.

      Volume: 43 Pages: 325-338

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Journal Article] The embedding dimension of weighted homogeneous surface singularities2010

    • Author(s)
      A.Nemethi, T.Okuma
    • Journal Title

      Journal of Topology 3

      Pages: 643-667

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Journal Article] The embedding dimension of weighted homogeneous surface singularities2010

    • Author(s)
      A.Nemethi, T.Okuma
    • Journal Title

      Journal of Topology

      Volume: 3 Pages: 643-667

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Journal Article] Universal abelian covers of certain surface singularities2006

    • Author(s)
      T.Okuma
    • Journal Title

      Math.Ann. 334

      Pages: 753-773

    • Data Source
      KAKENHI-PROJECT-16740042
  • [Journal Article] Universal abelian covers of certain surface singularities2006

    • Author(s)
      T.Okuma
    • Journal Title

      Math.Ann. vol.334

      Pages: 753-773

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16540043
  • [Journal Article] Universal abelian covers of certain surface singularities2006

    • Author(s)
      Tomohiro OKUMA
    • Journal Title

      Math. Ann. 334

      Pages: 753-773

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16540043
  • [Journal Article] Universal abelian covers of certain surface singularities2006

    • Author(s)
      Tomohiro OKUMA
    • Journal Title

      Math.Ann. 334

      Pages: 753-773

    • Data Source
      KAKENHI-PROJECT-16540043
  • [Journal Article] Numerical Gorenstein elliptic singularities2005

    • Author(s)
      Tomohiro Okuma
    • Journal Title

      Math.Z. 249

      Pages: 31-62

    • Data Source
      KAKENHI-PROJECT-16740042
  • [Journal Article] Numerical Gorenstein elliptic singularities2005

    • Author(s)
      Tomohiro OKUMA
    • Journal Title

      Math.Zeitschrift 249

      Pages: 31-62

    • Data Source
      KAKENHI-PROJECT-16540043
  • [Journal Article] Numerical Gorenstein elliptic singularities2005

    • Author(s)
      T.Okuma
    • Journal Title

      Math.Zeitschrift vol.249

      Pages: 31-62

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16540043
  • [Journal Article] Numerical Gorenstein elliptic singularities2005

    • Author(s)
      奥間 智弘
    • Journal Title

      Math.Z. 249

      Pages: 31-62

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16540052
  • [Journal Article] Numerical Gorenstein elliptic singularities2005

    • Author(s)
      Tomohiro OKUMA
    • Journal Title

      Math. Zeitschrift 249

      Pages: 31-62

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16540043
  • [Journal Article] Numerical Gorenstein elliptic singularities2005

    • Author(s)
      T.Okuma
    • Journal Title

      Math.Z. 249

      Pages: 31-62

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16540052
  • [Journal Article] Universal abelian covers of rational surface singularities2004

    • Author(s)
      Tomohiro Okuma
    • Journal Title

      J.London Math.Soc.(2). 70

      Pages: 307-324

    • Data Source
      KAKENHI-PROJECT-16740042
  • [Journal Article] On (-P・-P)-constant deformations of Gorenstein surface singularities2004

    • Author(s)
      Tomohiro Okuma
    • Journal Title

      Comment.Math.Helv. 79

      Pages: 647-658

    • Data Source
      KAKENHI-PROJECT-16740042
  • [Journal Article] On ($-Pcdot P$)-constant deformations of Gorenstein surface singularities

    • Author(s)
      奥間智弘
    • Journal Title

      Commentarli Mathematici Helvetici (印刷中)

    • Data Source
      KAKENHI-PROJECT-16540052
  • [Journal Article] Universal abelian covers of certain surface singularities

    • Author(s)
      T.Okuma
    • Journal Title

      Math.Ann. (to appear)

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16540052
  • [Journal Article] Universal abelian covers of certain surfac singularities.

    • Author(s)
      奥間 智弘
    • Journal Title

      Math. Ann. (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16540052
  • [Presentation] Geometric aspects of ideals in a normal surface singularity2023

    • Author(s)
      Tomohiro Okuma
    • Organizer
      Mini workshop on singularities---Various aspects of singularities---
    • Invited
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] Normal tangent cone for the maximal ideal of a certain hypersurface2023

    • Author(s)
      吉田健一,奥間智弘,渡辺 敬一
    • Organizer
      日本数学会2024年度年会代数学分科会
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] Gorenstein normal tangent cones2023

    • Author(s)
      吉田健一,奥間智弘,渡辺 敬一
    • Organizer
      日本数学会2023年度秋季総合分科会
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] 複素2次元特異点の解析的不変量について2023

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会2023年度秋季総合分科会
    • Invited
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] Gorensteinness for normal tangent cones of the maximal ideals of Brieskorn hypersurfaces2023

    • Author(s)
      吉田健一,奥間智弘,渡辺 敬一
    • Organizer
      日本数学会2022年度年会
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] 複素2次元特異点の基本的な解析的不変量について2022

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会東北支部会
    • Invited
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] Gorensteinness for normal tangent cones of elliptic ideals2022

    • Author(s)
      吉田健一,奥間智弘,渡辺 敬一
    • Organizer
      日本数学会2022年度秋季総合分科会
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] The core of ideals in minimally elliptic singularities2022

    • Author(s)
      奥間智弘,吉田健一,渡辺 敬一
    • Organizer
      日本数学会2022年度年会
    • Data Source
      KAKENHI-PROJECT-21K03215
  • [Presentation] 複素2次元特異点の基本的な解析的不変量について2022

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会東北支部会
    • Invited
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Presentation] Normal reduction numbers of normal surface singularities2019

    • Author(s)
      Tomohiro Okuma
    • Organizer
      Geometry and Topology of Singularities--- In honor of Andras Nemethi's 60th birthday
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Presentation] Normal reduction numbers and cohomology of normal surface singularities2019

    • Author(s)
      Tomohiro Okuma
    • Organizer
      Algebraic surfaces and related topics---In honor of Kazuhiro Konno's 60th birthday
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Presentation] Weighted homogeneous surface singularities homeomorphic to Brieskorn complete intersections2019

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Presentation] Complex surface singularities with a fixed integral homology sphere link2017

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会年会函数論分科会
    • Place of Presentation
      首都大学東京(東京都・八王子市)
    • Year and Date
      2017-03-25
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Presentation] 位相型が等しくタイプが異なる複素2次元特異点について2017

    • Author(s)
      奥間智弘
    • Organizer
      第60回函数論シンポジウム
    • Invited
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Presentation] Cohomology of ideal sheaves on resolutions of surface singularities2017

    • Author(s)
      奥間智弘
    • Organizer
      2017年度多変数関数論冬セミナー
    • Invited
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Presentation] Cohomology of ideals in normal surface singularities2017

    • Author(s)
      T. Okuma
    • Organizer
      International Conference on Singularity Theory
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05216
  • [Presentation] A characterization of rational surface singularities via core of ideals2016

    • Author(s)
      Tomohiro Okuma
    • Organizer
      The 4th Franco-Japanese-Vietnamese Singularities
    • Place of Presentation
      Chambery (France)
    • Year and Date
      2016-11-08
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Presentation] 2次元特異点の幾何種数イデアルと次数1の楕円型特異点について2015

    • Author(s)
      奥間智弘
    • Organizer
      2015年度多変数関数論冬セミナー
    • Place of Presentation
      京都大学
    • Year and Date
      2015-12-26
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Presentation] 2次元特異点における Good ideal と $p_g$-ideal2014

    • Author(s)
      奥間智弘,渡辺敬一,吉田健一
    • Organizer
      日本数学会秋季総合分科会
    • Place of Presentation
      広島大学
    • Year and Date
      2014-09-26
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Presentation] Good ideals and $p_g$-ideals in normal surface singularities2014

    • Author(s)
      Tomohiro Okuma
    • Organizer
      Commutative Algebra and Singularity Theory 2014
    • Place of Presentation
      立山国際ホテル
    • Year and Date
      2014-07-31
    • Data Source
      KAKENHI-PROJECT-26400064
  • [Presentation] Good ideals and $p_g$-ideals in normal surface singularities2014

    • Author(s)
      T. Okuma
    • Organizer
      Commutative Algebra and Singularity Theory 2014
    • Place of Presentation
      立山国際ホテル
    • Year and Date
      2014-07-31
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] Good ideals for Gorenstein surface singularities2013

    • Author(s)
      T. Okuma
    • Organizer
      The 1st Franco-Japanese-Vietnamese Symposium on Singularities
    • Place of Presentation
      Universite Nice Sophia Antipolis, Nice, France
    • Year and Date
      2013-09-21
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] Good ideals for normal surface singularities2013

    • Author(s)
      Tomohiro Okuma
    • Organizer
      Hyperplane Arrangements and Characteristic classes
    • Place of Presentation
      京都大学
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] Good ideals for Gorenstein surface singularities2013

    • Author(s)
      Tomohiro Okuma
    • Organizer
      The 1st Franco-Japanese- Vietnamese Symposium on Singularities
    • Place of Presentation
      Universite Nice (France)
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] Good ideals for normal surface singularities2013

    • Author(s)
      T. Okuma
    • Organizer
      Hyperplane Arrangements and Characteristic classes
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2013-11-12
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] 複素2次元特異点の幾何種数について2013

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会東北支部会
    • Place of Presentation
      東北大学大学院理学研究科
    • Year and Date
      2013-02-16
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] The maximal ideal cycles over complete intersection surface singularities of Brieskorn type2013

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会年会函数論分科会
    • Place of Presentation
      京都大学
    • Year and Date
      2013-03-23
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] 複素2 次元特異点の幾何種数について(特別講演)2013

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会東北支部会
    • Place of Presentation
      東北大学
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] The maximal ideal cycles over complete intersection surface singularities of Brieskorn type2013

    • Author(s)
      奥間智弘,孟凡寧
    • Organizer
      日本数学会年会
    • Place of Presentation
      京都大学
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] 複素2次元特異点の幾何種数について2012

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会年会函数論分科会
    • Place of Presentation
      東京理科大学理学部
    • Year and Date
      2012-03-27
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] 2次元特異点の幾何種数と periodic constant について2012

    • Author(s)
      奥間智弘
    • Organizer
      特異点と多様体の幾何学
    • Place of Presentation
      山形大学
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] 複素2次元特異点の幾何種数について2012

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会年会函数論分科会特別講演
    • Place of Presentation
      東京理科大学(東京)(招待講演)
    • Year and Date
      2012-03-27
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] 複素2次元特異点の幾何種数について2012

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会年会函数論分科会(招待講演)
    • Place of Presentation
      東京理科大学理学部
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] 2次元特異点の幾何種数とperiodic constant について2012

    • Author(s)
      奥間智弘
    • Organizer
      特異点と多様体の幾何学
    • Place of Presentation
      山形大学理学部
    • Year and Date
      2012-08-25
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] The embedding dimension of weighted homogeneous complex surface2011

    • Author(s)
      Tomohiro Okuma
    • Organizer
      第4回日豪実・複素特異点研究集会
    • Place of Presentation
      兵庫教育大学神戸サテライト
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] On the geometric genus of certain surface singularities2011

    • Author(s)
      T. Okuma
    • Organizer
      第6回日仏特異点シンポジウム
    • Place of Presentation
      九州大学西新プラザ
    • Year and Date
      2011-09-05
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] On the geometric genus of certain surface singularities2011

    • Author(s)
      奥間智弘
    • Organizer
      第6回日仏特異点シンポジウム
    • Place of Presentation
      九州大学西新プラザ(招待講演)
    • Year and Date
      2011-09-05
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] A formula for the geometric genus of surface singularities2011

    • Author(s)
      T.Okuma
    • Organizer
      Branched Coverings, Degenerations, and Related Topics 2011
    • Place of Presentation
      首都大学東京
    • Year and Date
      2011-03-09
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] The embedding dimension of weighted homogeneous complex surface singularities2011

    • Author(s)
      奥間智弘
    • Organizer
      第4回日豪実・複素特異点研究集会
    • Place of Presentation
      兵庫教育大学神戸サテライト(兵庫)(招待講演)
    • Year and Date
      2011-11-23
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] A formula for the geometric genus of surface singularities2011

    • Author(s)
      奥間智弘
    • Organizer
      Branched Coverings, Degenerations, and Related Topics 2011
    • Place of Presentation
      首都大学東京南大沢キャンパス
    • Year and Date
      2011-03-09
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] The embedding dimension of weighted homogeneous complex surface singularities2011

    • Author(s)
      T. Okuma
    • Organizer
      第4回日豪実・複素特異点研究集会
    • Place of Presentation
      兵庫教育大学神戸サテライト
    • Year and Date
      2011-11-23
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] 2次元特異点の幾何種数公式2010

    • Author(s)
      奥間智弘
    • Organizer
      平成22年度 多変数関数論冬セミナー
    • Place of Presentation
      京都大学 理学研究科
    • Year and Date
      2010-12-24
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] 2次元特異点の幾何種数公式2010

    • Author(s)
      奥間智弘
    • Organizer
      2010年度多変数関数論冬セミナー
    • Place of Presentation
      京都大学理学研究科
    • Year and Date
      2010-12-24
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] Invariants of splice quotient singularities2010

    • Author(s)
      奥間智弘
    • Organizer
      特異点と多様体の幾何学
    • Place of Presentation
      山形大学理学部
    • Year and Date
      2010-09-18
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] Invariants of splice quotient singularities2010

    • Author(s)
      T.Okuma
    • Organizer
      特異点と多様体の幾何学
    • Place of Presentation
      山形大学
    • Year and Date
      2010-09-18
    • Data Source
      KAKENHI-PROJECT-22244008
  • [Presentation] Invariants of splice quotient singularities2009

    • Author(s)
      奥間智弘
    • Organizer
      第5回日仏特異点シンポジウム
    • Place of Presentation
      IRMA, Strasbourg, France
    • Year and Date
      2009-08-27
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] Splice quotient singularities and the Casson invariant conjecture2009

    • Author(s)
      奥間智弘
    • Organizer
      第56回トポロジーシンポジウム
    • Place of Presentation
      北海道大学
    • Year and Date
      2009-08-08
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] スプライス商特異点の重複度2009

    • Author(s)
      奥間智弘
    • Organizer
      トポロジーと写像の特異点
    • Place of Presentation
      信州大学理学部
    • Year and Date
      2009-06-04
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] Splice quotient singularities and the Casson invariant conjecture2009

    • Author(s)
      奥間智弘
    • Organizer
      第56回トポロジーシンポジウム
    • Place of Presentation
      北海道大学クラーク会館
    • Year and Date
      2009-08-08
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] Invariants of splice quotient singularities2009

    • Author(s)
      奥間智弘
    • Organizer
      第5回日仏特異点シンポジウム
    • Place of Presentation
      ストラスブール大学,フランス
    • Year and Date
      2009-08-27
    • Data Source
      KAKENHI-PROJECT-20540060
  • [Presentation] Normal surface singularities of splice type2008

    • Author(s)
      奥間智弘
    • Organizer
      Hodge 理論, 退化, 特異点の代数幾何とトポロジー
    • Place of Presentation
      東北学院大学
    • Year and Date
      2008-03-13
    • Data Source
      KAKENHI-PROJECT-18740024
  • [Presentation] The Casson Invariant Conjecture and splice type singularities2007

    • Author(s)
      奥間智弘
    • Organizer
      "Geometric Singularity Theory"Polish-Japanese Singularity Theory Working Days
    • Place of Presentation
      ポーランド科学アカデミー数学研究所
    • Year and Date
      2007-07-10
    • Data Source
      KAKENHI-PROJECT-18740024
  • [Presentation] Good ideals for Gorenstein surface singularities

    • Author(s)
      Tomohiro Okuma
    • Organizer
      The 1st Franco-Japanese-Vietnamese Symposium on Singularities
    • Place of Presentation
      Universite Nice Sophia Antipolis, Nice, France.
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] 複素2 次元特異点の幾何種数について

    • Author(s)
      奥間智弘
    • Organizer
      日本数学会東北支部会
    • Place of Presentation
      東北大学
    • Invited
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] 2次元特異点の幾何種数と periodic constant について

    • Author(s)
      奥間智弘
    • Organizer
      研究集会 「特異点と多様体の幾何学」
    • Place of Presentation
      山形大学
    • Data Source
      KAKENHI-PROJECT-23540068
  • [Presentation] Good ideals for normal surface singularities

    • Author(s)
      Tomohiro Okuma
    • Organizer
      Hyperplane Arrangements and Characteristic classes
    • Place of Presentation
      京都大学数理解析研究所
    • Data Source
      KAKENHI-PROJECT-23540068
  • 1.  TOMARU Tadashi (70132579)
    # of Collaborated Projects: 7 results
    # of Collaborated Products: 0 results
  • 2.  SAEKI Osamu (30201510)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  SAKUMA Kazuhiro (80270362)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 4.  OHMOTO Toru (20264400)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 5.  IWASE Norio (60213287)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 6.  KOBAYASHI Mahito (10261645)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 7.  YAMAMOTO Minoru (40435475)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 8.  ANDO Yoshifumi (80001840)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 9.  TAKAYAMA Haruko (90274430)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 10.  TAKASE Masamichi (30447718)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 11.  YAMAMOTO Takahiro (60435972)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 12.  TAKATA Toshie (40253398)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 13.  HIRACHI Kengo (60218790)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 14.  TAKAYAMA Shigeharu (20284333)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 15.  YOSHIKAWA Ken-Ichi (20242810)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 16.  OHSAWA Takeo (30115802)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 17.  TSUJI Hajime (30172000)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 18.  HONDA Nobuhiro (60311809)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 19.  YAMANOI Katsutoshi (40335295)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 20.  ISHI Hiseyuki (00326068)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 21.  NOGUCHI Junjiro (20033920)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 22.  YAMAGUCHI Keizo (00113639)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 23.  MABUCHI Toshiki (80116102)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 24.  KAMIMOTO Joe (90301374)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 25.  MATSUMURA Shin-Ichi (90647041)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 26.  TOMARI Masataka (60183878)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 27.  HAYAKAWA Takayuki (20198823)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 28.  WATANABE Keiichi (10087083)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 1 results
  • 29.  MATSUURA Yutaka (50096905)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 30.  FUKUDA Takuo (00009599)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 31.  岩瀬 順一 (70183746)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 32.  Nemethi Andras
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 33.  吉田 健一
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

URL: 

Are you sure that you want to link your ORCID iD to your KAKEN Researcher profile?
* This action can be performed only by the researcher himself/herself who is listed on the KAKEN Researcher’s page. Are you sure that this KAKEN Researcher’s page is your page?

この研究者とORCID iDの連携を行いますか?
※ この処理は、研究者本人だけが実行できます。

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi