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INNAMI Nobuhiro  印南 信宏

ORCIDConnect your ORCID iD *help
… Alternative Names

印南 信宏  インナミ ノブヒロ

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Researcher Number 20160145
Other IDs
Affiliation (Current) 2023: 新潟大学, 自然科学系, フェロー
Affiliation (based on the past Project Information) *help 2020 – 2021: 新潟大学, 自然科学系, フェロー
2019: 新潟大学, 自然科学系, 教授
2005 – 2017: 新潟大学, 自然科学系, 教授
2000 – 2004: 新潟大学, 理学部, 教授
1999: Graduate School of Science, Niigata University Prof., 大学院・自然科学研究所, 教授 … More
1999: Niigata Univ., Dept. Math. and Inform. Professor, 大学院・自然科学研究科, 教授
1998: 新潟大学, 大学院自然科学研究科, 教授
1997: 新潟大学, 自然科学研究科, 教授
1996: 新潟大学, 大学院・自然科学研究科, 教授
1994: 新潟大学, 理学部, 助教授
1991 – 1992: 新潟大学, 理学部, 助教授
1988: 新潟大学, 理学部, 助教授
1987: 名古屋工業大学, 工学部, 講師 Less
Review Section/Research Field
Principal Investigator
Geometry / Geometry
Except Principal Investigator
Geometry / 代数学・幾何学 / Global analysis / 解析学 / Geometry / General mathematics (including Probability theory/Statistical mathematics) / Basic Section 11020:Geometry-related
Keywords
Principal Investigator
リーマン幾何学 / 測地線の幾何学 / 測地線 / リッカチ微分方程式 / ワープド積 / シュタイナー比 / 平面凸ビリヤード問題 / 平行線の理論 / 最短ネットワーク / 曲面 … More / 測地線の幾何 / 平面凸ビリヤード / トポノゴフの比較定理 / カットローカス / Riemannian geometry / ベクトル場 / ヤコビ場 / 分解定理 / 勾配流 / ヘシアン / 微分幾何学 / 最短ネットワーク問題 / アレキサンドルフ幾何 / 円 / 平行線 / 回転面 / 放射曲率 / ギルバート・ポラックの予想 / 平面のシュタイナー比 / 球面のシュタイナー比 / 曲率 / 大域幾何 / 幾何学 / ボロノイ図 / 球面定理 / 曲面上の幾何学 / 最小点軌跡 / サブ混合性 / 曲面のボロノイ図 / サブエルゴード性 / 距離関数の差 / 測地流 / エルゴード性 / 円のリヤード / 最小シュタイナー木 / トポノゴフの定理 / コンジュゲートローカス / 極 / リーマン幾何 / ビリヤード / 平行線の幾何 / billiard / theory of parallels / 凸ビリヤード問題 / リーマン多様体 / 張り合わせ多様体 / geometru of geodesics / フィンスラー幾何学 / 非対称距離の幾何学 / カット―ローカス / 測地円の漸近挙動 / ブーズマン関数 / 測地円 / Finsler回転面 / トーラス … More
Except Principal Investigator
概ケーラー多様体 / 概複素構造 / Einstein manifold / J-holomorphic curve / 変換群 / フィンスラー計量 / aspherical多様体 / 撞球問題 / スカラー曲率 / アインシュタイン多様体 / 積分可能性 / (概)ケーラー多様体 / Almost Kaehler manifold / Integrability / 概複素多様体 / Goldberg予想 / J-正則曲線 / 概超複素多様体 / Walker計量 / 可解多様体 / 6次元球面 / Goldberg conjecture / Almost complex structure / リ-群 / アスフェリカル多様体 / リーマン計量 / ホイヘンスの原理 / 極小曲面 / 作用素環 / 情報幾何学 / 非有界微分子 / イオン・ノイマン代数 / テプリッツ作用素 / 等質空間 / 力学系 / m人ゲーム / 非可換Lpー空間 / 密度関数 / アインシュタイン空間 / 曲率斉次空間 / 失役点 / ラグランジアン力学系 / 解析的接合積 / マルコフ決定過程 / 楕円関数 / シナイの撞球系 / 散逸的撞球系 / 外部散乱問題 / エルゴード仮説 / バーコフの問題 / 量子カオス / ローレンツガス / リー群 / 概ケーラー空間 / 定曲率空間 / Quasiケーラー多様体 / 弱^*-アインシュタイン多様体 / 正則断面曲率 / Ce-多様体 / Hitchin-Thorpe型不等式 / 弱*-アインシュタイン多様体 / C_l-多様体 / 概(擬)エルミート多様体 / (*-)アインシュタイン多様体 / (反)正則断面曲率 / C_L多様体 / シンプレクティック構造 / Maslou指数 / Quasi Kaehler manifold / Weakly *-Einstein manifold / Holomorphic sectional curvature / Cλ-manifold / Hitchin-Thorpe type inequality / Riemann多様体 / Liouville多様体 / 理想境界 / Alexandrov空間 / Busemann関数 / Riemannian manifold / Liouville manifold / ideal boundary / 離散力学系 / カオス / フラクタル / 記号力学系 / 古典力学系 / 1次元力学系 / 複素力学系 / エントロピー / エルゴード理論 / Billiard System / Discreet Dynamical System / Chaos / Fractal / Symbolic Dynamical System / Classical Dynamical System / Complex Dynamical System / 1-Dimensional Dynamical System / アインシュタイン計量 / Nearlyケーラー6次元球面 / CR-部分多様体 / Goldherg予想 / 概エルミート構造 / 四元数構造 / リッチ固有値 / Almost complex manifold / (Almost) Kahler manifold / Einstein metric / Nearly Kahler 6-dimensional sphere / CR-submanifold / ケーラー多様体 / Spin(7) / Blair-Ianus汎関数 / Solvable group / Benson-Gordon予想 / Six dimensional sphere / Walker manifold / Goldbergの予想 / 概Hypercomplex(擬)エルミート多様体 / 超極小J-正則曲線 / Weierstrass-Bryant公式 / Kaehler manifold / 6-dimensional sphere / Solvmanifold / Walker metric / 測度値拡散過程 / 無限アリルモデル / 多重遺伝子族 / 一致確率 / ユーンズのサンプリング公式 / 無限次元拡散過程 / 遺伝モデル / ライト・フィシャーモデル / ユーエンズのサンプリング公式 / Measure Valued Diffusion / Infinite Allele Model / Multigene Family / Average Identity Probability / 測地線 / 非対称距離構造 / 測地線の分岐現象 / 切断跡 / 凸性 / Busemamnn関数 / 指数写像の正距方位図法 / ミンコフスキー空間 / 非対称距離函数 / 完備フィンスラー多様体 / 正距方位図法 / 凸関数 / アフィン函数 / フィンスラー多様体 / Randers計量 / コンパクト階数1対称空間 / Blaschkeフィンスラー多様体 / 平行性 / 共役跡 / ランダース計量 / ベアバルト計量 Less
  • Research Projects

    (19 results)
  • Research Products

    (83 results)
  • Co-Researchers

    (37 People)
  •  Convexity and global behavior of geodesics on Finsler manifolds

    • Principal Investigator
      塩濱 勝博
    • Project Period (FY)
      2018 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Fukuoka Institute of Technology
  •  Geometry of geodesics for spaces with non-symmetric distancesPrincipal Investigator

    • Principal Investigator
      Innami Nobuhiro
    • Project Period (FY)
      2015 – 2017
    • Research Category
      Grant-in-Aid for Challenging Exploratory Research
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  The geometry of geodesics and its application to the discrete mathematicsPrincipal Investigator

    • Principal Investigator
      INNAMI Nobuhiro
    • Project Period (FY)
      2010 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  Geometry of geodesics for minimal network problems and plane convex billiardsPrincipal Investigator

    • Principal Investigator
      INNAMI Nobuhiro
    • Project Period (FY)
      2006 – 2009
    • 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
  •  Research on Dynamical Systems, Chaos and Fractals Modeled by Billiard Systems in Aspect of Global Analysis

    • Principal Investigator
      KUBO Izumi
    • Project Period (FY)
      2001 – 2003
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Global analysis
    • Research Institution
      Hiroshima Institute of Technology
      Hiroshima University
  •  Studies of glued Riemannian manifoldsPrincipal Investigator

    • Principal Investigator
      INNAMI Nobuhiro
    • Project Period (FY)
      2001 – 2004
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  撞球問題の総合的研究の企画

    • Principal Investigator
      KUBO Izumi
    • Project Period (FY)
      2000
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Global analysis
    • Research Institution
      Hiroshima University
  •  Geometry of Points at Infinity

    • Principal Investigator
      SUGAHARA Kunio
    • Project Period (FY)
      2000 – 2002
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Osaka Kyoiku University
  •  Geometry of Almost Hermitian Manifolds

    • Principal Investigator
      SEKIGAWA Kouei
    • Project Period (FY)
      1998 – 1999
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      NIIGATA UNIVERSITY
  •  Researches on vector fields in the large by Riccati equationPrincipal Investigator

    • Principal Investigator
      INNAMI Nobuhiro
    • Project Period (FY)
      1997 – 1999
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  ヤコビベクトル場による大域幾何学の研究Principal Investigator

    • Principal Investigator
      印南 信宏
    • Project Period (FY)
      1996
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  微分可能多様体上の幾何学的諸構造に関する研究

    • Principal Investigator
      関川 浩永
    • Project Period (FY)
      1994
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Niigata University
  •  多様体上の幾何学的諸構造に関する研究

    • Principal Investigator
      関川 浩永
    • Project Period (FY)
      1992
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      Niigata University
  •  CR構造の局所埋め込み問題について

    • Principal Investigator
      渡辺 誠治
    • Project Period (FY)
      1992
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      解析学
    • Research Institution
      Niigata University
  •  多様体の幾何学

    • Principal Investigator
      WATABE Tsuyoshi
    • Project Period (FY)
      1991
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      Niigata University
  •  多様体の幾何学

    • Principal Investigator
      渡部 剛
    • Project Period (FY)
      1988
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      Niigata University
  •  Stochastic Differential Equations and Their Applications

    • Principal Investigator
      SHIMIZU Akinobu
    • Project Period (FY)
      1987 – 1988
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      General mathematics (including Probability theory/Statistical mathematics)
    • Research Institution
      Nagoya Institute of Technology

All 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2002 2001 Other

All Journal Article Presentation

  • [Journal Article] Affine Functions and Busemann Functions on Complete Finsler manifolds2021

    • Author(s)
      N.Innami--Y.Itokawa--T.Nagano--K.Shiohama
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: 149

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K03314
  • [Journal Article] Axial straight lines in the covering surface of a Finsler surface2021

    • Author(s)
      印南信広ー糸川銚ー永野哲也ー塩濱勝博
    • Journal Title

      Nihonkai Mathematical Journal

      Volume: 32

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K03314
  • [Journal Article] The Azimuthal Euidistant Projection for a Finsler Manifold by the Exponential Map2020

    • Author(s)
      N.Innami--Y.Itokawa--T.Nagano--K.Shiohama
    • Journal Title

      Pacific Journal of Mathematics

      Volume: 308

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K03314
  • [Journal Article] Notes on Reversibility and Branching of Geodesics in Finsler Spaces2019

    • Author(s)
      T.Nagano-N.Innami-Y.Itokawa-K.Shiohama
    • Journal Title

      Bull. Inst. Politeh. Din Iasi (Romania)

      Volume: 65

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K03314
  • [Journal Article] Blaschke Finsler Manifolds and actions of Projective Randers Changes on Cut Loci2019

    • Author(s)
      N.Innami-Y.Itokawa-T.Nagano-K.Shiohama
    • Journal Title

      Transactions of American Mathematical Society

      Volume: 371

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03314
  • [Journal Article] Blaschke Finsler Manifolds and Actions of Projective Randers Changes on Cut Loci2019

    • Author(s)
      N.Innami, Y.Itokawa, T.Nagano and K.Shiohama
    • Journal Title

      Trans. Amer. Math. Soc.

      Volume: Vol 371, No. 10

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03314
  • [Journal Article] Blaschke Finsler manifolds and actions of projective Randers changes on cut loci2018

    • Author(s)
      N. Innami, Y. Itokawa, T. Nagano, K. Shiohama
    • Journal Title

      Trans. Amer. Maht. Soc.

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Journal Article] The asymptotic behavior of geodesic circles in any 2-torus : A sub-mixing property2018

    • Author(s)
      Nobuhiro Innami, Toshiro Okura
    • Journal Title

      Publ. Math. Debrecen

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Journal Article] Parallel axiom and the 2-nd order differentiability of Busemann functions, to appear in Publ. Math. Debrecen, (with Y. Itokawa2018

    • Author(s)
      N. Innami, Y. Itokawa, T. Nagano and K. Shiohama
    • Journal Title

      Publ. Math. Debrecen

      Volume: 印刷中

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Journal Article] Geodesics in a Finsler surface with one-parameter group of motions2016

    • Author(s)
      Nobuhiro Innami, Tetsuya Nagano, Katsuhiro Shiohama
    • Journal Title

      Publ. Math. Debrecen

      Volume: 印刷中

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Journal Article] Angular distribution of diameters for spheres and rays for planes2015

    • Author(s)
      Nobuhiro Innami and Yuya Uneme
    • Journal Title

      Pacific J. Math.

      Volume: 印刷中

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] Angular distribution of diameters for spheres and rays for planes2015

    • Author(s)
      Nobuhiro Innami, Yuya Uneme
    • Journal Title

      Pacific J. Math.

      Volume: 277

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Journal Article] The cut locus and Voronoi diagram of a finite set of points in a surface (2015) (22 pages)2015

    • Author(s)
      N. Innami, K. Shiohama and Y. Uneme
    • Journal Title

      manuscripta math.

      Volume: 印刷中

    • DOI

      10.1007/s00229-015-0733-y

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] The front of increasing concentric balls and cut locus in a surface2014

    • Author(s)
      N. Innami, K Shiohama and Y. Uneme
    • Journal Title

      Diff. Geom. Appl.

      Volume: 34

    • DOI

      10.1016/j.difgeo.2014.04.001

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] Complete real hypersurfaces and special K-line bundles in K-hyperbolic spaces2013

    • Author(s)
      Nobuhiro Innami, You Itokawa, Katsuhiro Shiohama
    • Journal Title

      International J. Math.

      Volume: 24

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] A sphere theorem for radial curvature2013

    • Author(s)
      Nobuhiro Innami, Katsuhiro Shiohama, Yuya Uneme
    • Journal Title

      Nihonkai Math. J.

      Volume: 24 Pages: 93-102

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] Differentiability of invariant circles for strongly integrable convex billiards2013

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Nihonkai Math. J.

      Volume: 24 Pages: 1-17

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] The Alexandrov-Toponogov comparison theorem for radial curvature2013

    • Author(s)
      Nobuhiro Innami, Katsuhiro Shiohama, Yuya Uneme
    • Journal Title

      Nihonkai Math. J.

      Volume: 24 Pages: 57-91

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] The asymptotic behavior of geodesic circles in a 2-torus of revolution and a sub-ergodic property2012

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Nihonkai Math. J.

      Volume: 23 Pages: 43-55

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] The cut loci, conjugate loci and poles in a complete Riemannian manifold2012

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Geom. Funct. Anal.

      Volume: 22 Pages: 1400-1406

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] Metric spheres in the projective spaces with constant holomor phic sectional curvature2011

    • Author(s)
      Innami, Nobuhiro
    • Journal Title

      Tsukuba J.Math

      Volume: 35 Pages: 79-90

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] The Steiner ratio conjecture of Gilbert-Pollak may still be open2010

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Algorithmica

      Volume: 57 Pages: 869-872

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Journal Article] Circular billiards and parallel axiom in convex billiards2009

    • Author(s)
      Tamura Shinetsu, Innami Nobuhiro
    • Journal Title

      Tsukuba J. Math 33,no.1

      Pages: 147-160

    • NAID

      120007129035

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Steiner ratios for length spaces having ends2008

    • Author(s)
      Tamura Shinetsu, Innami Nobuhiro
    • Journal Title

      Nihonkai Math. J 19,no.2

      Pages: 105-110

    • NAID

      110007605576

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Compression theorems for surfaces and their applications2007

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      J. Math. Soc. Japan 59

      Pages: 825-835

    • NAID

      10019540082

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Compression theorems for surfaces and their applications2007

    • Author(s)
      Innami Nobuhiro
    • Journal Title

      J. Math. Soc. Japan 59,no.3

      Pages: 825-835

    • NAID

      10019540082

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Compression theorems for surfaces and their applications2007

    • Author(s)
      Nobuhiro INNAMI
    • Journal Title

      applications,Journal of the Mathematical Society of Japan Vol. 59, No. 3

      Pages: 825-835

    • NAID

      10019540082

    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Steiner ratio for hyperbolic surfaces2006

    • Author(s)
      N.Innami
    • Journal Title

      Proceedings of the Japan Academy 82・6

      Pages: 77-79

    • NAID

      120006746841

    • Data Source
      KAKENHI-PROJECT-16540057
  • [Journal Article] Steiner ration for hyperbolic surfaces2006

    • Author(s)
      Nobuhiro INNAMI
    • Journal Title

      Proceedings of the Japan Academy 82・6

      Pages: 77-79

    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Steiner ratio for hyperbolic surfaces2006

    • Author(s)
      Nobuhiro INNAMI, Byung HakKim
    • Journal Title

      Proceedings of the Japan Academy Vol. 82, No. 6

      Pages: 77-79

    • NAID

      120006746841

    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Steiner ratio for hyperbolic surfaces2006

    • Author(s)
      Innami Nobuhiro, Kim Byung Hak
    • Journal Title

      Proc. Japan Acad. Ser. A Math. Sci 82,no.6

      Pages: 77-79

    • NAID

      120006746841

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Geometry of geodesics for convex billiards and circular billiards2002

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Nihonkai Math.J 13

      Pages: 73-120

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-13640068
  • [Journal Article] Geometry of geodesics for convex billiards and circular billiards2002

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Nihonkai Math.J. 13, 1

      Pages: 73-120

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-13640068
  • [Journal Article] Gradient vector fields which characterize warped products2001

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Math.Scan. 88

      Pages: 182-192

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-13640068
  • [Journal Article] Jacobi vector fields along geodesies in glued Riemannian manifolds2001

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Nihonkai Math.J. 12, 2

      Pages: 101-112

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-13640068
  • [Journal Article] Gradient vector fields which characterize warped products2001

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Math.Scand. 88

      Pages: 182-192

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-13640068
  • [Journal Article] Jacobi vector fields along geodesics in glued Riemannian manifolds2001

    • Author(s)
      Nobuhiro Innami
    • Journal Title

      Nihonkai Math.J. 12

      Pages: 101-112

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-13640068
  • [Journal Article] Compression theorems for surfaces and their applications

    • Author(s)
      N.Innami
    • Journal Title

      Journal of Mathematical Society of Japan (in printing)

    • NAID

      10019540082

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-16540057
  • [Journal Article] The Steiner ratio conjecture of Gilbert-Pollak may still be open

    • Author(s)
      N. Innami, B. H. Kim, Y. Mashiko and K. Shiohama
    • Journal Title

      Algorithmica, to appear

    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] The Steiner ratio conjecture of Gilbert-Pollak may still be open

    • Author(s)
      N. Innami
    • Journal Title

      Algorithmica (to appear) (掲戴決定)

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Compression theorems for surfaces and their applications

    • Author(s)
      Nobuhiro INNAMI
    • Journal Title

      Journal of the Mathematics Society of Japan (印刷中)

    • NAID

      10019540082

    • Data Source
      KAKENHI-PROJECT-18540076
  • [Journal Article] Compression theorems for surfaces and their applications

    • Author(s)
      N.Innami
    • Journal Title

      J. Math. Soc. Japan (To appear in)

    • NAID

      10019540082

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-16540057
  • [Presentation] トーラス上の測地円の漸近挙動2018

    • Author(s)
      印南信宏
    • Organizer
      日本数学会年会
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] トーラス上の測地線を参考にした曲面上の測地線2018

    • Author(s)
      印南信宏
    • Organizer
      研究会「直観幾何学2018」
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] カットローカスの最近点について2017

    • Author(s)
      印南信宏
    • Organizer
      日本数学会年会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2017-03-25
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] 射影的ランダース変換とカットローカス2017

    • Author(s)
      印南信宏
    • Organizer
      日本数学会秋季総合分科会
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] 非対称距離空間の幾何学2017

    • Author(s)
      印南信宏
    • Organizer
      研究会「直観幾何学2017」
    • Place of Presentation
      熊本大学
    • Year and Date
      2017-02-12
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] カットローカスの最近点に関する Klingenberg 補題の Finsler 版2017

    • Author(s)
      印南信宏
    • Organizer
      研究会「測地線および関連する諸問題
    • Place of Presentation
      熊本大学
    • Year and Date
      2017-01-08
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] Limit circles in a torus2017

    • Author(s)
      Nobuhiro Innami
    • Organizer
      52nd Symposium on Finsler Geometry
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] 射影的ランダース変換とカットローカス2017

    • Author(s)
      印南信宏
    • Organizer
      研究会「測地線及び関連する諸問題2018」
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] Voronoi diagrams and cut loci in surfaces2016

    • Author(s)
      Nobuhiro Innami
    • Organizer
      The Cut Locus : A bridge over differential geometry, optimal control, and transport
    • Place of Presentation
      King Mongkut's Institute of Technology Ladkrabang, Thailand
    • Year and Date
      2016-08-03
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] 平行線の公理とBusemann関数の微分可能性2016

    • Author(s)
      印南信宏
    • Organizer
      日本数学会秋季総合分科会
    • Place of Presentation
      関西大学
    • Year and Date
      2016-09-15
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] Geodesics in a Finsler torus of revolution2016

    • Author(s)
      印南 信宏
    • Organizer
      研究集会「測地線及び関連する諸問題」
    • Place of Presentation
      熊本大学教育学部
    • Year and Date
      2016-01-10
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] Finsler 回転面上の測地線の大域挙動2016

    • Author(s)
      印南 信宏
    • Organizer
      日本数学会年会
    • Place of Presentation
      筑波大学
    • Year and Date
      2016-03-19
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] The Finsler version of Klingenberg's lemma2016

    • Author(s)
      Nobuhiro Innami
    • Organizer
      51st Symposium on Finsler Geometry
    • Place of Presentation
      鹿児島県市町村自治会館
    • Year and Date
      2016-11-18
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] 曲面上のボロノイ図とカットローカス2015

    • Author(s)
      印南信宏
    • Organizer
      研究集会「直観幾何学」
    • Place of Presentation
      熊本大学(熊本県・熊本市中央区黒髪)
    • Year and Date
      2015-03-10
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] Geodesics in a Finsler torus of revolution2015

    • Author(s)
      Nobuhiro Innami
    • Organizer
      19th International Workshop on: HERMITIAN-GRASSMANNIAN SUBMANIFOLDS AND ITS APPLICATIONS & the 10th KNUHGRG-OCAMI Joint Differential Geometry Workshop
    • Place of Presentation
      Daejeon, Korea
    • Year and Date
      2015-10-27
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15K13435
  • [Presentation] 曲面上の測地円とカットローカス2015

    • Author(s)
      印南信宏
    • Organizer
      研究会「測地線及び関連する諸問題
    • Place of Presentation
      熊本大学(熊本県・熊本市中央区黒髪)
    • Year and Date
      2015-01-10
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] フィンスラー計量を持つ回転トーラス上の測地線2015

    • Author(s)
      印南信宏
    • Organizer
      日本数学会年会
    • Place of Presentation
      明治大学(東京都・千代田区神田駿河台)
    • Year and Date
      2015-03-24
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] フィンスラー計量から導入される3つの距離とその測地線2014

    • Author(s)
      印南信宏
    • Organizer
      福岡大学微分幾何研究会
    • Place of Presentation
      福岡大学セミナーハウス(福岡県・福岡市中央区六本松)
    • Year and Date
      2014-11-01
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] Three distances induced from a Finsler metric and their geodesics in a 2-torus2014

    • Author(s)
      Nobuhiro Innami
    • Organizer
      The 49th Symposium on Finsler Geometry
    • Place of Presentation
      長崎産業会館(長崎県・長崎市大黒町)
    • Year and Date
      2014-12-05
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] 多角形に関するシュタイナー比の比較定理2013

    • Author(s)
      印南信宏
    • Organizer
      研究会「直観幾何学」
    • Place of Presentation
      熊本大学教育学部
    • Invited
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] 平面凸ビリヤードの不変円の微分可能性について2011

    • Author(s)
      印南信宏
    • Organizer
      研究集会「部分多様体幾何とリー群作用2011」
    • Place of Presentation
      東京理科大学森戸記念館
    • Year and Date
      2011-09-03
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] ラジアル曲率によるトポノゴフの比較定理2011

    • Author(s)
      印南信宏
    • Organizer
      研究集会「リーマン幾何と幾何解析」
    • Place of Presentation
      筑波大学
    • Year and Date
      2011-02-19
    • Data Source
      KAKENHI-PROJECT-22540072
  • [Presentation] 平面凸ビリヤードの稠密軌道について2010

    • Author(s)
      印南信宏
    • Organizer
      測地線及び関連する諸問題
    • Place of Presentation
      熊本大学
    • Year and Date
      2010-01-09
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 平面凸ビリヤードの稠密軌道について2010

    • Author(s)
      印南信宏
    • Organizer
      研究集会「測地線及び関連する諸問題」
    • Place of Presentation
      熊本大学
    • Year and Date
      2010-01-09
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 最短ネットワークのシュタイナー比問題2010

    • Author(s)
      印南信宏
    • Organizer
      直観幾何学
    • Place of Presentation
      熊本大学
    • Year and Date
      2010-02-13
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] シュタイナー比に関するGilbert-Pollak 予想の証明には誤りがある2009

    • Author(s)
      印南信宏
    • Organizer
      研究集会(測地線及び関連する諸問題)
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-01-11
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] シュタイナー比に関するGilbert-Pollak予想の証明には誤りがある2009

    • Author(s)
      印南信宏
    • Organizer
      測地線及び関連する諸問題
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-01-11
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] シュタイナー比に関するGilbert-Pollak予想の証明には誤りがある2009

    • Author(s)
      印南信宏
    • Organizer
      研究集会「測地線及び関連する諸問題」
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-01-11
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 曲面上の最小シュタイナー木問題とフェルマー・トリチェリ問題2009

    • Author(s)
      印南信宏
    • Organizer
      東海大学微分幾何セミナー
    • Place of Presentation
      東海大学
    • Year and Date
      2009-09-21
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] Gilbert-Pollakのシュタイナー比予想について2009

    • Author(s)
      印南信宏
    • Organizer
      リーマン幾何と幾何解析
    • Place of Presentation
      筑波大学
    • Year and Date
      2009-02-20
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 距離を減少させる三角形間の写像とその応用2008

    • Author(s)
      印南信宏
    • Organizer
      研究集会(第10回測地線及び関連する諸問題)
    • Place of Presentation
      熊本大学
    • Year and Date
      2008-01-05
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] シュタイナー比に関するGilbert-Pollakの予想について2008

    • Author(s)
      印南信宏
    • Organizer
      微分幾何学と複素構造
    • Place of Presentation
      新潟大学
    • Year and Date
      2008-11-05
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 距離を減少させる三角形間の写像とその応用2008

    • Author(s)
      印南信宏
    • Organizer
      研究集会「第10回測地線及び関連する諸問題」
    • Place of Presentation
      熊本大学
    • Year and Date
      2008-01-05
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 非負曲率アレキサンドルフ曲面のシュタイナー比について2008

    • Author(s)
      印南信宏
    • Organizer
      等質空間の不変構造と部分多様体
    • Place of Presentation
      千葉工業大学津田沼校舎
    • Year and Date
      2008-03-13
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 距離を減少させる三角形間の写像とその応2008

    • Author(s)
      印南信宏
    • Organizer
      第10回測地線及び関連する諸問題
    • Place of Presentation
      熊本大学
    • Year and Date
      2008-01-05
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] Steiner ratio for surfaces2007

    • Author(s)
      印南信宏
    • Organizer
      NIMS International Workshop on Riemannian Geometry and Related Area, National Institute for Mathematical Sciences
    • Place of Presentation
      大韓民国
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] Compression theorems for surfaces with curvature bounded below I. II2006

    • Author(s)
      印南信宏
    • Organizer
      Global Analysis of Real and Complex Manifolds, Cheju National University
    • Place of Presentation
      大韓民国
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 曲面上の領域の圧縮定理2006

    • Author(s)
      印南信宏
    • Organizer
      多様体上の微分方程式
    • Place of Presentation
      KKRホテル金沢
    • Year and Date
      2006-12-07
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] Compression theorems for surfaces2006

    • Author(s)
      印南信宏
    • Organizer
      微分幾何学セミナー
    • Place of Presentation
      筑波大学
    • Year and Date
      2006-12-07
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 最短ネットワーク問題におけるシュタイナー比について2006

    • Author(s)
      印南信宏
    • Organizer
      広島幾何学研究集会2006
    • Place of Presentation
      広島大学
    • Year and Date
      2006-10-04
    • Data Source
      KAKENHI-PROJECT-18540076
  • [Presentation] 回転面を参照した球面定理

    • Author(s)
      印南信宏
    • Organizer
      研究集会「測地線及び関連する諸問題」
    • Place of Presentation
      熊本大学教育学部
    • Data Source
      KAKENHI-PROJECT-22540072
  • 1.  SEKIGAWA Kouei (60018661)
    # of Collaborated Projects: 12 results
    # of Collaborated Products: 0 results
  • 2.  WATABE Tsuyoshi (60018257)
    # of Collaborated Projects: 7 results
    # of Collaborated Products: 0 results
  • 3.  斎藤 吉助 (30018949)
    # of Collaborated Projects: 5 results
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  • 4.  田中 謙輔 (70018258)
    # of Collaborated Projects: 4 results
    # of Collaborated Products: 0 results
  • 5.  MATSUSHITA Yasuo (90144336)
    # of Collaborated Projects: 3 results
    # of Collaborated Products: 0 results
  • 6.  兼田 正治 (60204575)
    # of Collaborated Projects: 3 results
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  • 7.  HASEGAWA Keizo (00208480)
    # of Collaborated Projects: 2 results
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  • 8.  KUBO Izumi (70022621)
    # of Collaborated Projects: 2 results
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  • 9.  MORITA Takehiko (00192782)
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  • 10.  HASHIMOTO Hideya (60218419)
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  • 11.  渡辺 誠治 (40018271)
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  • 12.  秋山 茂樹 (60212445)
    # of Collaborated Projects: 2 results
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  • 13.  SUGAHARA Kunio (20093255)
    # of Collaborated Projects: 1 results
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  • 14.  MACHIGASHIRA Yoshiroh (00253584)
    # of Collaborated Projects: 1 results
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  • 15.  KOYAMA Akira (40116158)
    # of Collaborated Projects: 1 results
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  • 16.  KATAYAMA Yoshikazu (10093395)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 17.  ITOH Jin-ichi (20193493)
    # of Collaborated Projects: 1 results
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  • 18.  YURI Michiko (70174836)
    # of Collaborated Projects: 1 results
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  • 19.  SHISHIKURA Hiromitsu (70192606)
    # of Collaborated Projects: 1 results
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  • 20.  TASAKI Shuichi (10260150)
    # of Collaborated Projects: 1 results
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  • 21.  SHIMIZU Akinobu (10015547)
    # of Collaborated Projects: 1 results
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  • 22.  KATO Akikuni (20024226)
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  • 23.  MIWA Megumu (30011521)
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  • 24.  YAMADA Hiroshi (20022551)
    # of Collaborated Projects: 1 results
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  • 25.  HASEGAWA Yosihei (10022675)
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  • 26.  YAMAZATO Makoto (00015900)
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  • 27.  吉原 久夫 (60114807)
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  • 28.  羽鳥 理 (70156363)
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  • 29.  宮村 修 (80029511)
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  • 30.  井上 友喜 (60253316)
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  • 31.  中村 勝弘 (50140801)
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  • 32.  那須 正和 (20006258)
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  • 33.  塩濱 勝博 (20016059)
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  • 34.  永野 哲也 (00259699)
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  • 35.  糸川 銚 (90223205)
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  • 36.  ITOKAWA Yoe
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 6 results
  • 37.  塩浜 勝博
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    # of Collaborated Products: 6 results

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※ この処理は、研究者本人だけが実行できます。

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