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UMEHARA MASAAKI  梅原 雅顕

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… Alternative Names

UMEHARA Masaaki  梅原 雅顕

UMEHARA Masaki  梅原 雅串

梅原 雅顕  ウメハラ マサアキ

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Researcher Number 90193945
Other IDs
External Links
Affiliation (Current) 2025: 東京科学大学, 情報理工学院, 教授
Affiliation (based on the past Project Information) *help 2016 – 2024: 東京工業大学, 情報理工学院, 教授
2017: 東京工業大学, 大学院情報理工学研究科, 教授
2017: 東京工業大学, 理工学研究科, 教授
2015: 東工大, 大学院情報理工学研究科, 教授
2012 – 2015: 東京工業大学, 情報理工学(系)研究科, 教授 … More
2013 – 2014: 東京工業大学, 大学院情報理工学研究科, 教授
2013: 大阪大学, 大学院・理学研究科, 教授
2013: 東京工業大学, 大学院・情報理工学研究科, 教授
2013: 東京工業大学, 大学院・理工学研究科, 教授
2011: 東京工業大学, 大学院・情報理工学研究科, 教授
2010: 大阪大学, 理学研究科, 教授
2007 – 2010: Osaka University, Graduate Schcol of Science, Professor
2009: 大阪大学, 大学院・理学研究院, 教授
2005 – 2007: 大阪大学, 理学研究科, 教授
2006: 大阪大学, 大学院理学研究科, 教授
2003 – 2005: Osaka Univ., Graduate School of Science, Prof., 大学院・理学研究科, 教授
2002: 広島大学, 理学部, 教授
2000 – 2002: Hiroshima Univ., Graduate School of Science, Professor, 大学院・理学研究科, 教授
1998 – 2000: Fac.Sci., HIROSHIMA UNIVERSITY Prof., 理学部, 教授
1997: 大阪大学, 大学院・理学研究科, 助教授
1994 – 1995: 大阪大学, 理学部, 講師
1993: 大阪大学, 教養部, 文部教官講師
1992 – 1993: 大阪大学, 教養部, 講師
1990: 筑波大学, 数学系, 助手 Less
Review Section/Research Field
Principal Investigator
Geometry / Geometry / Basic Section 11020:Geometry-related
Except Principal Investigator
Geometry / Geometry / 代数学・幾何学 / Basic Section 11020:Geometry-related / 解析学
Keywords
Principal Investigator
双曲型空間 / 曲面 / 平均曲率 / 特異点 / 波面 / ガウス曲率 / 曲線 / ガウス写像 / 超曲面 / 半正定値計量 … More / 微分幾何学 / 変曲点 / 極大曲面 / 極小曲面 / Gaussian curvature / 双対性 / フラックス / 交叉帽子 / カスプ辺 / 曲率 / 実解析写像の特異点 / 曲面の臍点 / 3次元球面の平坦トーラス / ツバメの尾 / 部分多様体 / Wave front / Inflection point / Singular point / 平坦 / Gauss map / Mean curvature / Hyperbolic space / Total curvature / hyperbolic space / Surface / Mean Curvature / 全曲率 / Conlcal Singularity / Constant mean cuvuature / Vertex / Suvface / Cuvue / 錐的特異点 / 円錐的特異点 / 平均曲率一定 / 頂点 / 4頂点定理 / ガウス・ボンネの定理 / 4頂点定理 / 微分幾何 / Gauss写像 … More
Except Principal Investigator
特異点 / 微分幾何 / 平均曲率一定曲面 / 等径超曲面 / 幾何学 / ワイエルストラス表現公式 / ガウス写像 / 極小曲面 / 安定性 / 微分幾何学 / 部分多様体 / 極大曲面 / フロント / ワイエルストラス表現 / 双曲空間 / ルジャンドル特異点 / ラグランジュ特異点 / 平均曲率 / 解析的延長 / 零平均曲率曲面 / ローレンツ多様体 / obstruction / test configuration / balanced metric / extremal metric / 全曲率 / swallowtail / cuspidal cross cap / cuspidal edge / 退化 / stability / 剛性 / 直径 / 2重接触 / 正則閉曲線 / 3次元球面 / 平坦トーラス / ミンコフスキー時空 / 世界面 / 非線形現象 / カスプ辺 / 曲面 / アインシュタイン計量 / Ricci soliton / 離散化 / 可積分系 / 特異点の微分幾何 / ワイエルストラス型表現公式 / ミンコフスキー空間 / 相対性理論 / 特異点論 / ケーラー多様体 / シュレディンガー方程式 / 複素多様体 / 調和写像 / ローレンツ幾何 / 微分幾何一般(含種々の幾何構造、離散幾何) / 平均曲率一定鏡面 / ローレンツ空間型 / 曲面・調教k面 / 退化点 / 曲面・超曲面 / 解析的拡張 / 直線定理 / Darboux枠 / グラフ型波面 / バンド交差理論 / 焦点集合 / グラフ型大波面 / 垂足曲線 / ツバメの尾曲面 / バンド交差 / バルクエッジ対応 / ホログラフィー原理 / 光化学反応 / トポロジカル絶縁体 / 垂足部分集合 / スピントロニクス / 特異性 / 折り目特異点 / 波面 / ド・ジッター空間の平均曲率1曲面 / 因果特性の変化 / CMC-1 面 / ド・ジッター空間 / 型変化 / 可視化 / スペシャル幾何 / tt*幾何 / エントロピー / 超曲面 / 可積分幾何 / スピン作用 / モーメント写像 / 等径関数 / トランスノーマル関数 / L2調和1形式 / リッチ流 / トランスレイティングソリトン / 平均曲率流 / 交叉理論 / ラグランジュ部分多様体 / フレアホモロジー / 交叉数 / ハミルトン変形 / 共形型 / L2調和形式 / 極小ラグランジュ部分多様体 / constant scalar curvature / degeneration / geometry / Chow計量 / Kahler-Einstein計量 / 漸近的ベルグマン核 / Zhangの臨界計量 / Extremal metric / 射影kahler多様体 / extremal Kahle計量 / Caltin-Lu-Tian-Zelditch / Hilbert-Mumford漸近安定性 / Chow-Mumford漸近安定性 / 存在問題 / 偏極代数多様体 / extremal-Kahler計算 / Hilbert-mumford安定性 / Chow-mumford安定性 / 漸近安定性 / 定スカラー曲率ケーラー計量 / Hitchin-Kobayashi対応 / Test configuration / 定スカラー曲率 / Seiberg-Witten equation / 4 dimensional Kahler manifold / total curvature / constant mean curvature surface / Gauss map / exceptional holonomy / homogeneous hypersurface / isoparametric hypersurface / 平均曲率-定曲面 / 概複素曲線 / Seiberg-Witten不変量 / Einstein計量 / DS-diagram / ラグランジュ錐 / ラグランジュ・ルジャンドル部分多様体 / 四元数ケーラー多様体 / 距離空間のモジュライ / 例外ホロノミー / 等径・等質超曲面 / サイバーグウィッテン方程式 / 4元数ケーラー多様性 / 例学ホロノミー / 等質超曲面 / flat surface / maximal surface / front / singularities / Weierstrass representation / オサーマン型不等式 / 定平均曲率曲面 / 平坦フロント / CMC-1曲面 / ワイエルストラス型表現 / 平坦曲面 / surface / curve / Evolution equation / Variational problem / 解の滑らかさ / 運動方程式 / 平均曲率一定超曲面 / 極小部分多様体 / 一般次元 / 境界 / 非連結 / 弾性曲線 / 曲線 / 発展方程式 / 変分問題 / Harmonic maps / Surfaces of constant mean curvature / Completely integrable systems / Shape operators / Isoparametric hypersurfaces / Austere submanifolds / Lagrangian submanifolds / Gauss mapping / スペシャルラグランジアン部分多様体 / 重複度 / 主曲率 / 型作用素 / Austere部分多様体 / ラグランジアン部分多様体 / Instanton / Local Mirror Symmetry / Supersymmetry / Special Holonomy / M理論 / 重力インスタントン / 例外ホロノミー群 / インスタントン / 局所ミラー対称性 / 超対称性 / 特殊ホロノミー群 / Einstein metric / constant mean curvature / 時空間図形 / 安定解 / 3-dimensional nomogeneous space / vortex filament equation / nonlinear Schro-dinger equation / 対称空間 / 橋本変換 / 渦糸 / 渦糸の方程式 / 3次元等質空間 / 渦系の方程式 / 非線型シュレディンガー方程式 / 剛性定理 / 直径予想 / ガウス曲率 / 局所等角ケーラー構造 / ノン-ケーラー多様体_ / リッチ平坦ケーラー計量 / 佐々木構造 / 接触構造 / 一般化された幾何学 / リッチ平坦計量 / 4次元多様体の対数変換 / 一般化された超ケーラ-構造 / 一般化されたケーラ-構造 / 一般化された複素構造 / カラビーヤオ構造 / ポアソン構造 / 一般化されたケーラー構造 / 双エルミート構造 / 一般化された幾何構造 / 変形理論 / からビーヤオ多様体 / 管状部分多様体 / 余次元2 / 宇宙論 / 余次元 / 空間的部分多様体 / 大域的性質 / 事象の地平線 / 光的超曲面 / 光的絶対全曲率 / 焦集合 / 光的幾何学 / ローレンツ空間形 / comnplet / conformally flat / duality / Gauss-Bonnet formula / front bundles / coherent tangent bundles / wave fronts / 超幾何微分方程式 / 3ノイド / 共形平坦計量 / 双曲計量 / ガウス・ボンネの定理 / CMC-1 曲面 / 双曲空間の平坦波面 / 交叉帽子 / 連接接束 / 特異曲率 / 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 / 量子コホモロジー論 / Yang-Mills接続 / 調和写像論 / 特異点のモデュライ / G_2軌道 / クレパント解消予想 / ミラー対称性 / tt*戸田格子 / 離散変形KdV方程式 / 可積分な運動 / 運動量写像 / 軌道の幾何学 / 量子コホモロジー / カオス性 / パンルヴェ方程式 / 離散幾何学 / 超曲面の幾何学 / 特異点に微分幾何 / ド・ジッター空間のCMC1曲面 / 双曲空間の平坦曲面 / ザイフェルト曲面 / 擬フックス群 / virtual fiber / Montesinos knot / 垣水複体 / 強可逆結び目 / 穴あきトーラス束 / Cannon-Thurston-Dicks分解 / Canonical decomposition / Cannon-Thurston写像 / へガード分解 / small cancellation theory / 2橋結び目 / 標準的分割 / Cannon-Thurston map / 曲面束 / 穴あきトーラス / 双曲構造 / 幾何構造 / ヘガード分解 / 3次元多様体 / 非ブライアント型 / 線形ワインガルテン曲面 / ホロ球面 / 双対性 / 擬球面 / シンプレクテイック幾何学 / ホロ平坦 / ホロ凸 / ホロタイトはめ込み / ガウス・ボンネ型定理 / 反ド・シッター空間 / 画像処理 / 双対性の曼荼羅 / ルジャンドル双対性 / 斜傾幾何学 / ブレーン / 反ドジッター空間 / 重力場レンズ / 画像処理,ブレーン宇宙 / 接触幾何 / シンプレクテイック幾何 / 偏微分方程式 / 極複素構造 / 小平次元 / 変形 / シンプレエクティック不変量 / ネーデルの不変量 / ディラック作用素 / ディラック型作用素 / 代数多様体 / 間隙定理 / シンプレクティック多様体 / モ-ス理論 / 摂動展開 / ファインマン積分 / canonical deccmposition / 絡み輪 / 結び目 / 解消トンネル / 穴開きトーラス束 / 熱方程式 / 特異摂動 / 波動方程式 / 多重表象 / 定数磁場 / 擬微分作用素 / 自己共役 / ハミルトニアン / 相対論 / 磁場 / 特殊Hecke群の表現 / 3p次の平面関数 / Siegel尖点形式の次元予想 / 新谷ゼーター関数 / 部分コンパクト化 / Hodge構造の分類空間 / 認容半単純元 / 2次特殊線形群の水平表現 / パッフ系 / モノドロミー群 / 分岐被覆 / 基本群 / 複素旗多様体 / Yang-Mills-Higgs場 / Virasoro代数 / KacーMoody群 / リ-代数 / 代数群 / 量子群 / ホップ代数 / ドラ-ム理論 / Hーdeformable / 量子代数群 / 単純Lie群 / 調和Weylテンソル / Bevnstein問題 / Minkowski空間 Less
  • Research Projects

    (45 results)
  • Research Products

    (190 results)
  • Co-Researchers

    (119 People)
  •  Analogues of the Weierstrass representation formula and extension problem of submanifolds at their singularities

    • Principal Investigator
      山田 光太郎
    • Project Period (FY)
      2022 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Institute of Science Tokyo
  •  Differential geometrey of singularities and its applicationsPrincipal Investigator

    • Principal Investigator
      梅原 雅顕
    • Project Period (FY)
      2021 – 2025
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 11020:Geometry-related
    • Research Institution
      Institute of Science Tokyo
  •  Singularities of surfaces and hypersurfaces in Lorentzian space forms

    • Principal Investigator
      Yamada Kotaro
    • Project Period (FY)
      2017 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Tokyo Institute of Technology
  •  Studies on diameter conjecture on flat tori in the unit sphere

    • Principal Investigator
      Kitagawa Yoshihisa
    • Project Period (FY)
      2015 – 2017
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Utsunomiya University
  •  Promotion of the study of curves, surfaces and hypersurfaces with singularities from the view point of differential geometryPrincipal Investigator

    • Principal Investigator
      UMEHARA MASAAKI
    • Project Period (FY)
      2014 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Tokyo Institute of Technology
  •  Surfaces with singularities in space-times and Weierstrass-type representation formulas

    • Principal Investigator
      Yamada Kotaro
    • Project Period (FY)
      2014 – 2017
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Tokyo Institute of Technology
  •  Geometric studies on singularity of non-linear phenomena

    • Principal Investigator
      Izumiya Shyuichi
    • Project Period (FY)
      2014 – 2017
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Hokkaido University
  •  Studies on some open problems concerning flat tori in odd dimensional spheres

    • Principal Investigator
      KITAGAWA Yoshihisa
    • Project Period (FY)
      2012 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Utsunomiya University
  •  Development of Integrable Geometry

    • Principal Investigator
      Miyaoka Reiko
    • Project Period (FY)
      2011 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Tohoku University
  •  Geometry of curves, surfaces and hypersurfaces with singularitiesPrincipal Investigator

    • Principal Investigator
      UMEHARA Masaaki
    • Project Period (FY)
      2010 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Tokyo Institute of Technology
      Osaka University
  •  A research on the geometric singularities of non-linear phenomena

    • Principal Investigator
      IZUMIYA Shyuichi
    • Project Period (FY)
      2010 – 2013
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Hokkaido University
  •  Geometric structures defined by differential forms (Calabi-Yau structures, generalized Kaeher structures)

    • Principal Investigator
      GOTO Ryushi
    • Project Period (FY)
      2010 – 2012
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  Differential geometric research on surfaces admitting singularities and its application

    • Principal Investigator
      KOKUBU Masatoshi
    • Project Period (FY)
      2010 – 2014
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Tokyo Denki University
  •  Weierstrass-type representation formulas and their application to surfaces with singularities

    • Principal Investigator
      YAMADA Kotaro
    • Project Period (FY)
      2009 – 2013
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Tokyo Institute of Technology
  •  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
  •  Geometry of curves and surfaces with singularitiesPrincipal Investigator

    • Principal Investigator
      UMEHARA Masaaki
    • Project Period (FY)
      2007 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  Fusion of geometry and the theory of integrable systems

    • Principal Investigator
      MIYAOKA Reiko
    • Project Period (FY)
      2007 – 2010
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Tohoku University
  •  Differential Geometry and Partial Differential Equations as an application of Singularity theory

    • Principal Investigator
      IZUMIYA Shyuichi
    • Project Period (FY)
      2006 – 2009
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Hokkaido University
  •  Heegaard structures and geometric structures of 3-manifolds

    • Principal Investigator
      SAKUMA Makoto (MAKOTO Sakuma)
    • Project Period (FY)
      2006 – 2009
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Hiroshima University
      Osaka University
  •  Generalizations of Weierstrass-type representation formula and their applications to theory of surface with singularities

    • Principal Investigator
      YAMADA Kotaro (KOTARO Yamada)
    • Project Period (FY)
      2006 – 2008
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Kyushu University
  •  Existence Problem of Fxtremal Metran and Degeneration of Balanced Metrics

    • Principal Investigator
      MABUCHI Toshiki
    • Project Period (FY)
      2004 – 2007
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  The global behavior of curves and surfaces in space formsPrincipal Investigator

    • Principal Investigator
      UMEHARA Masaaki
    • Project Period (FY)
      2003 – 2006
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  Variational problem and evolution equation of curves and surfaces

    • Principal Investigator
      KOISO Norihito
    • Project Period (FY)
      2002 – 2005
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  Generalizations of Weierstrass-type representation formulae and applications

    • Principal Investigator
      YAMADA Kotaro
    • Project Period (FY)
      2002 – 2005
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Kyushu University
  •  Differential equations and theory of submanifolds

    • Principal Investigator
      MIYAOKA Reiko
    • Project Period (FY)
      2002 – 2003
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Kyushu University
      Sophia University
  •  Research on surfaces of constant mean curvature one in hyperbolic space and its applicationPrincipal Investigator

    • Principal Investigator
      UMEHARA Masaaki
    • Project Period (FY)
      2001 – 2002
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      HIROSHIMA UNIVERSITY
  •  Special'Holonomy Group and Supersymmetric Cycle

    • Principal Investigator
      KANNO Hiroaki
    • Project Period (FY)
      2000 – 2001
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Nagoya University
      Hiroshima University
  •  Differential systems and submanifolds theory

    • Principal Investigator
      MIYAOKA Reiko
    • Project Period (FY)
      2000 – 2001
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Sophia University
  •  Geometry of surfaces in space formsPrincipal Investigator

    • Principal Investigator
      UMEHARA Masaaki
    • Project Period (FY)
      1999 – 2000
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Hiroshima University
  •  シンプレクティック多様体の構造論と新しい不変量の定義

    • Principal Investigator
      榎 一郎
    • Project Period (FY)
      1997 – 1999
    • Research Category
      Grant-in-Aid for Exploratory Research
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  Global analysis of curves and surfaces

    • Principal Investigator
      KOISO Norihito
    • Project Period (FY)
      1997 – 1999
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  A Modern Approach to Geometry of Curves and Surtaces and its ApplicationsPrincipal Investigator

    • Principal Investigator
      UMEHARA Masaaki
    • Project Period (FY)
      1997 – 1998
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      HIROSHIMA UNIVERSITY
      Osaka University
  •  3次元多様体のへガード分解と群の階数

    • Principal Investigator
      作間 誠
    • Project Period (FY)
      1995
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  3次元双曲型空間の平均曲率1の曲面Principal Investigator

    • Principal Investigator
      梅原 雅顕
    • Project Period (FY)
      1995
    • Research Category
      Grant-in-Aid for Encouragement of Young Scientists (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  ファインマン積分とその摂動展開から導出される幾何学的不変量の研究

    • Principal Investigator
      榎 一郎
    • Project Period (FY)
      1995
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  Nonlinear Schrodinger eqnations on riemannian manitolds

    • Principal Investigator
      KOISO Norihito
    • Project Period (FY)
      1995 – 1996
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  弾性波動方程式の研究

    • Principal Investigator
      KOISO Norihito
    • Project Period (FY)
      1994
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  3次元ユークリッド空間の極小曲面とその自然な双曲型空間への変形についてPrincipal Investigator

    • Principal Investigator
      梅原 雅顕
    • Project Period (FY)
      1994
    • Research Category
      Grant-in-Aid for Encouragement of Young Scientists (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  物理数学の方程式と擬微分作用素論

    • Principal Investigator
      長瀬 道弘
    • Project Period (FY)
      1993
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      解析学
    • Research Institution
      Osaka University
  •  双曲的ガウス写像による3次元双曲型空間内の平均曲率1の曲面の構成Principal Investigator

    • Principal Investigator
      梅原 雅顕
    • Project Period (FY)
      1993
    • Research Category
      Grant-in-Aid for Encouragement of Young Scientists (A)
    • Research Field
      Geometry
    • Research Institution
      Osaka University
  •  リーマン面上のベクトル束の幾何学

    • Principal Investigator
      ITOH Mitsuhiro
    • Project Period (FY)
      1992
    • Research Category
      Grant-in-Aid for Scientific Research on Priority Areas
    • Research Institution
      University of Tsukuba
  •  複素多様体の基本群と分岐被覆

    • Principal Investigator
      NAMBA Makoto
    • Project Period (FY)
      1992
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      Osaka University
  •  代数多様体のHodge理論

    • Principal Investigator
      USAI Sampei
    • Project Period (FY)
      1992
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      Osaka University
  •  極小部分多様体とその位相的,群論的研究

    • Principal Investigator
      高橋 恒郎
    • Project Period (FY)
      1990
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      University of Tsukuba
  •  ホップ代数,代数群,量子群の表現とその応用

    • Principal Investigator
      竹内 光弘
    • Project Period (FY)
      1990
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      代数学・幾何学
    • Research Institution
      University of Tsukuba

All 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 Other

All Journal Article Presentation Book

  • [Book] Differential geometry of curves and surfaces with singularities2022

    • Author(s)
      Umehara Masaaki, Saji Kentaro, Yamada Kotaro
    • Total Pages
      370
    • Publisher
      WorldScientific Publ.
    • ISBN
      9789811237157
    • Data Source
      KAKENHI-PROJECT-23K22392
  • [Book] 特異点をもつ曲線と曲面の微分幾何学2017

    • Author(s)
      梅原 雅顕・山田光太郎・佐治 健太郎
    • Total Pages
      319
    • Publisher
      丸善出版
    • ISBN
      9784621302156
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Book] Punctured torus groups and 2-bridge knot groups, Lecture Notes in Math. 19092007

    • Author(s)
      Hirotaka Akiyoshi, Makoto Sakuma, Masaaki Wada and Yasushi Yamashita
    • Publisher
      Springer, Berline
    • Data Source
      KAKENHI-PROJECT-18340018
  • [Book] Punctured torus groups and 2-bridge knot groups, Lecture Notes in Math. 19092007

    • Author(s)
      Hirotaka Akiyoshi, Makoto Sakuma, Masaaki Wada, Yasushi Yamashita
    • Publisher
      Springer, Berline
    • Data Source
      KAKENHI-PROJECT-18340018
  • [Journal Article] Deformations of cuspidal edges in a 3-dimensional space form2024

    • Author(s)
      K. Saji, M. Umehara and K. Yamada
    • Journal Title

      Kodai Mathematical Journal

      Volume: 47 Issue: 1 Pages: 67-89

    • DOI

      10.2996/kmj47105

    • ISSN
      0386-5991, 1881-5472
    • Year and Date
      2024-03-11
    • Language
      English
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23K20794
  • [Journal Article] Umbilics of Surfaces in the Lorentz-Minkowski 3-Space2023

    • Author(s)
      Ando Naoya, Umehara Masaaki
    • Journal Title

      Results in Mathematics

      Volume: 78 Issue: 6

    • DOI

      10.1007/s00025-023-02013-2

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-21K03228, KAKENHI-PROJECT-23K20794
  • [Journal Article] Symmetries of cross caps2023

    • Author(s)
      A. Honda, K. Naokawa, K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Tohoku Mathematical Journal

      Volume: 75 Issue: 1 Pages: 131-141

    • DOI

      10.2748/tmj.20211203

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17K14197, KAKENHI-PROJECT-19K14526, KAKENHI-PROJECT-22KK0034, KAKENHI-PROJECT-22K03312, KAKENHI-PROJECT-18K03301, KAKENHI-PROJECT-23K20794, KAKENHI-PROJECT-23K22392
  • [Journal Article] Analytic extensions of constant mean curvature one geometric catenoids in de Sitter 3-space2022

    • Author(s)
      Shoichi Fujimori, Yu Kawakami, Masatoshi Kokubu, Wayne Rossman, Masaaki Umehara, Kotaro Yamada and Seong-Deog Yang
    • Journal Title

      Differential Geometry and Its Applications

      Volume: 84 Pages: 101924-101924

    • DOI

      10.1016/j.difgeo.2022.101924

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K03617, KAKENHI-PROJECT-21K03226, KAKENHI-PROJECT-22H00094, KAKENHI-PROJECT-19K03463, KAKENHI-PROJECT-17H02839, KAKENHI-PROJECT-23K20794, KAKENHI-PROJECT-23K22392
  • [Journal Article] A generalization of Zakalyukin's lemma, and symmetries of surface singularities2022

    • Author(s)
      Honda Atsufumi、Naokawa Kosuke、Saji Kentaro、Umehara Masaaki、Yamada Kotaro
    • Journal Title

      Journal of Singularities

      Volume: 25 Pages: 299-324

    • DOI

      10.5427/jsing.2022.25m

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K03301, KAKENHI-PROJECT-17K14197, KAKENHI-PROJECT-19K14526, KAKENHI-PROJECT-23K20794, KAKENHI-PROJECT-23K22392
  • [Journal Article] Hypersurfaces with light-like points in a Lorentzian manifold II2021

    • Author(s)
      Umehara Masaaki、Yamada Kotaro
    • Journal Title

      Kodai Mathematical Journal

      Volume: 44 Issue: 1 Pages: 69-76

    • DOI

      10.2996/kmj44104

    • NAID

      130008000449

    • ISSN
      0386-5991, 1881-5472
    • Year and Date
      2021-03-18
    • Language
      English
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17H02839
  • [Journal Article] Analytic extension of exceptional constant mean curvature one catenoids in de Sitter 3-space.2020

    • Author(s)
      Shoichi Fujimori, Yu Kawakami, Masatoshi Kokubu, Wayne Rossman, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Mathematical Journal of Okayama University

      Volume: 62 Pages: 179-195

    • NAID

      120006778830

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H02839
  • [Journal Article] Curved foldings with common creases and crease patterns2020

    • Author(s)
      Honda Atsufumi、Naokawa Kosuke、Saji Kentaro、Umehara Masaaki、Yamada Kotaro
    • Journal Title

      Advances in Applied Mathematics

      Volume: 121 Pages: 102083-102083

    • DOI

      10.1016/j.aam.2020.102083

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03301, KAKENHI-PROJECT-17K14197, KAKENHI-PROJECT-19K14526, KAKENHI-PROJECT-17H02839
  • [Journal Article] Improvement of the Bernstein-type theorem for space-like zero mean curvature graphs in Lorentz-Minkowski space using fluid mechanical duality2020

    • Author(s)
      Akamine S.、Umehara M.、Yamada K.
    • Journal Title

      Proceedings of the American Mathematical Society, Series B

      Volume: 7 Issue: 2 Pages: 17-27

    • DOI

      10.1090/bproc/44

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K14527, KAKENHI-PROJECT-16H03937, KAKENHI-PROJECT-17H02839
  • [Journal Article] Analytic extension of exceptional constant mean curvature one catenoids in de Sitter 3-space2020

    • Author(s)
      Fujiori S., Kawakami, Y., Kokubu, M., Rossman, W., Umehara M., Yamada, K.
    • Journal Title

      Mathematical Journal of Okayama University

      Volume: 62 Pages: 179-195

    • NAID

      120006778830

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H02839
  • [Journal Article] Hypersurfaces with light-like points in a Lorentzian manifold2019

    • Author(s)
      M. Umehara, K. Yamada
    • Journal Title

      Journal of Goemetric Analysis

      Volume: 印刷中 Issue: 4 Pages: 1-33

    • DOI

      10.1007/s12220-018-00118-7

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-17H02839, KAKENHI-PROJECT-16H03937
  • [Journal Article] Space-like maximal surfaces containing entire null lines in Lorentz-Minkowski 3-space2019

    • Author(s)
      Akamine Shintaro、Umehara Masaaki、Yamada Kotaro
    • Journal Title

      Proceedings of the Japan Academy, Series A, Mathematical Sciences

      Volume: 95 Issue: 9 Pages: 97-102

    • DOI

      10.3792/pjaa.95.97

    • NAID

      40022077001

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H02839
  • [Journal Article] Isometric realization of cross caps as formal power series and its applications2019

    • Author(s)
      HONDA Atsufumi、NAOKAWA Kosuke、UMEHARA Masaaki、YAMADA Kotaro
    • Journal Title

      Hokkaido Mathematical Journal

      Volume: 48 Issue: 1 Pages: 1-44

    • DOI

      10.14492/hokmj/1550480642

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K14197, KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-16K17605
  • [Journal Article] Analytic extension of exceptional constant mean curvature  one catenoids in de Sitter 3-space2019

    • Author(s)
      S. Fujimori,Y. Kawakami, M. Kokubu,W. Rossman, M. Umehara, K. Yamada
    • Journal Title

      Math. J. Okayama Univ.

      Volume: 印刷中

    • NAID

      120006778830

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] Isometric realization of cross caps as formal power series and its applications2019

    • Author(s)
      Honda, A., Naokawa, K., Umehara, M., Yamada, K.
    • Journal Title

      Hokkaido Mathematical Journal

      Volume: 48 Pages: 1-44

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H02839
  • [Journal Article] Isometric realization of cross caps as formal power series and its applications2018

    • Author(s)
      A. Honda, K. Naokawa, M. Umehara, K. Yamada
    • Journal Title

      Hokkaido Mathmatical Journal

      Volume: 印刷中

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] 特異点の微分幾何学ー3次元時空の極大曲面をテーマにしてー2018

    • Author(s)
      梅原雅顕
    • Journal Title

      応用数理

      Volume: 28 Pages: 86-89

    • NAID

      130007491674

    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] Surfaces with light-like points in Lorentz-Minkowski 3-space with applications2018

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Springer Proceedings of Mathematics and Statics

      Volume: 211 Pages: 253-273

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] C^1-umbilics with arbitrarily high indices2017

    • Author(s)
      N. Ando, T. Fujiyama and M. Umehara
    • Journal Title

      Pasific Journal of Mathematics

      Volume: 288 Issue: 1 Pages: 1-27

    • DOI

      10.2140/pjm.2017.288.1

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-17K05221
  • [Journal Article] Analytic extension of Jorge-Meeks type maximal surfaces in Lorentz-Minkowski 3-space2017

    • Author(s)
      S.Fujimori, Y. Kawakami, M. Kokubu, W. Rossman, M. Umehara, K. Yamada
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 54 Pages: 249-272

    • NAID

      120006312701

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] An index formula for a bundle homomorphism of the tangent bundle into a vector bundle of the same rank, and its applications2017

    • Author(s)
      K. Saji, M. Umehara and K. Yamada
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 69 Issue: 1 Pages: 417-457

    • DOI

      10.2969/jmsj/06910417

    • NAID

      130005310476

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Language
      English
    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-16H03937
  • [Journal Article] Quadrics and Scherk towers2017

    • Author(s)
      Fujimori S.、Hertrich-Jeromin U.、Kokubu M.、Umehara M.、Yamada K.
    • Journal Title

      Monatshefte f?r Mathematik

      Volume: - Issue: 2 Pages: 249-279

    • DOI

      10.1007/s00605-017-1075-5

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05227, KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-17K05219, KAKENHI-PROJECT-16H03937, KAKENHI-PROJECT-17H02839
  • [Journal Article] Analytic extension of Jorge-Meeks type maximal surfaces in Lorentz-Minkowski 3-space2017

    • Author(s)
      S. Fujimori, Y. Kawakami, M. Kokubu, W. Rossman, M. Umehara, K. Yamada
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 印刷中

    • NAID

      120006312701

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] Mixed type surfaces with bounded mean curvature in 3-dimensional space-times2017

    • Author(s)
      A. Honda, M. Koiso, M. Kokubu, M. Umehara and Kotaro Yamada
    • Journal Title

      Diff. Geom. and its Appl.

      Volume: 52 Pages: 64-77

    • DOI

      10.1016/j.difgeo.2017.03.009

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-25287012, KAKENHI-PROJECT-26520205, KAKENHI-PROJECT-26610016, KAKENHI-PROJECT-26400066, KAKENHI-PROJECT-17K05227, KAKENHI-PROJECT-16K17605
  • [Journal Article] Surfaces With Light-Like Points In Lorentz-Minkowski 3-Space With Applications2017

    • Author(s)
      Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 211 Pages: 253-273

    • DOI

      10.1007/978-3-319-66290-9_14

    • ISBN
      9783319662893, 9783319662909
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-26400066, KAKENHI-PROJECT-17H02839
  • [Journal Article] ISOMETRIC DEFORMATIONS OF CUSPIDAL EDGES2016

    • Author(s)
      K. Naokawa, M. Umehara and K. Yamada
    • Journal Title

      Tohoku Mathematical Journal, Second Series

      Volume: 68 Issue: 1 Pages: 73-90

    • DOI

      10.2748/tmj/1458248863

    • NAID

      130008106069

    • ISSN
      0040-8735, 2186-585X
    • Year and Date
      2016-03-30
    • Language
      English
    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400066
  • [Journal Article] Isometric deformations of cuspidal edges2016

    • Author(s)
      K. Naokawa, M. Umehara, and K. Yamada
    • Journal Title

      Tohoku Math. J.

      Volume: 68

    • NAID

      130008106069

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] Behavior of Gaussian Curvature and Mean Curvature Near Non-degenerate Singular Points on Wave Fronts2016

    • Author(s)
      Luciana F, Martins, Kentaro Saji, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 154 Pages: 1-39

    • DOI

      10.1007/978-4-431-56021-0_14

    • ISBN
      9784431560197, 9784431560210
    • Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400066, KAKENHI-PROJECT-26400087
  • [Journal Article] Entite zero-mean curvature graphs of mixed type in Lorents-Minkowski 3-space2016

    • Author(s)
      S. Fujimori, Y. Kawakami, M. Kokubu, W. Rossman, M. Umehara, K. Yamada
    • Journal Title

      Quart. J. Math.

      Volume: 67 Pages: 1-37

    • DOI

      10.1093/qmath/haw038

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-16H03937, KAKENHI-PROJECT-25287012, KAKENHI-PROJECT-25800047, KAKENHI-PROJECT-15K04840, KAKENHI-PROJECT-26400066
  • [Journal Article] Zero mean curvature surfaces in Lorentz-Minkowski 3-space and 2-dimensional fluid mechanics2015

    • Author(s)
      S. Fujimori, Y. W. Kim, S.-E. Koh, W. Rossman, H. Shin, M. Umehara,K. Yamada and S.-D. Yang
    • Journal Title

      Math. J. Okayama Univ.

      Volume: 57

    • NAID

      120005525349

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] Intrinsic properties of surfaces with singularities2015

    • Author(s)
      M. Hasegawa, A. Honda, K. Naokawa, K. Saji, M. Umehara, K. Yamada
    • Journal Title

      International Journal of Mathatematics

      Volume: 26 Issue: 04 Pages: 1-34

    • DOI

      10.1142/s0129167x1540008x

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-14J00101, KAKENHI-PROJECT-26400066, KAKENHI-PROJECT-26400087, KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-24340013
  • [Journal Article] Intrinsic Deformation of Cuspidal Edges2015

    • Author(s)
      Kosuke Naokawa, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Tohoku Mathematical Jourrnal

      Volume: -

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-26400066
  • [Journal Article] Zero mean curvature surfaces in Lorentz-Minkowski 3-space which change type across a light-like line2015

    • Author(s)
      S. Fujimori, Y. W. Kim, S.-E. Koh, W. Rossman, H. Shin, M. Umehara, K. Yamada and S.-D. Yang
    • Journal Title

      Osaka J. Math.

      Volume: 52

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Journal Article] A construction of a complete bounded null curve in <b>C</b><sup>3</sup>2014

    • Author(s)
      L. Ferrer, F. Martin, M. Umehara and K. Yamada
    • Journal Title

      Kodai Mathematical Journal

      Volume: 37 Issue: 1 Pages: 59-96

    • DOI

      10.2996/kmj/1396008249

    • NAID

      130004496212

    • ISSN
      0386-5991, 1881-5472
    • Language
      English
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] Erratum to: Extrinsic diameter of immersed flat tori in S^32014

    • Author(s)
      Y.Kitagawa, M.Umehara
    • Journal Title

      Geometriae Dedicata

      Volume: 171 Issue: 1 Pages: 407-412

    • DOI

      10.1007/s10711-013-9900-z

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24540066
  • [Journal Article] A construction of a complete bounded null curve in C32014

    • Author(s)
      Leonor Ferrer, Francisco Martin, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Kodai Mathematical Journal

      Volume: 37 Pages: 59-96

    • NAID

      130004496212

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Embedded triply periodic zero mean curvature surfaces of mixed type in Lorentz-Minkowski 3-space2014

    • Author(s)
      S. Fujimori, W. Rossman, M. Umehara, K. Yamada and S.-D. Yang
    • Journal Title

      Michigan Math. J.

      Volume: 63 Issue: 1 Pages: 189-207

    • DOI

      10.1307/mmj/1395234364

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-25800047, KAKENHI-PROJECT-24224001
  • [Journal Article] Flat surfaces in hyperbolic 3-space whose hyperbolic Gauss maps are bounded2014

    • Author(s)
      Francisco Martín, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Revista Mathemática Iberoamericana

      Volume: 30 Issue: 1 Pages: 309-316

    • DOI

      10.4171/rmi/779

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016, KAKENHI-PROJECT-22244006
  • [Journal Article] Flat surfaces in hyperbolic 3-space whose hy perbolic Gauss maps are bounded2014

    • Author(s)
      Francisco Martin, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Revista Matemtica Iberoamericana

      Volume: 30 Pages: 309-316

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Closed planar curves without inflections2013

    • Author(s)
      S. Ohno, T. Ozawa and M. Umehara
    • Journal Title

      Proc. Amer. Math. Soc.

      Volume: 141 Issue: 1 Pages: 281-287

    • DOI

      10.1090/s0002-9939-1991-1043406-7

    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] Hyperbolic metrics on Riemann surfaces and space-like CMC-1 Surfaces in de Sitter 3-Space in "Recent Trends in Lorentzian Geometry"2013

    • Author(s)
      Shoichi Fujimori, Yu Kawakami, Masatoshi Kokubu, Wayne Rossman, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 26 Pages: 1-47

    • DOI

      10.1007/978-1-4614-4897-6_1

    • ISBN
      9781461448969, 9781461448976
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016, KAKENHI-PROJECT-21740052, KAKENHI-PROJECT-22540100, KAKENHI-PROJECT-23540091, KAKENHI-PROJECT-24740044
  • [Journal Article] Intrinsic invariants of cross caps Selecta Mathematica2013

    • Author(s)
      Masaru Hasegawa, Atsufumi Honda, Kosuke Naokawa, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Online First

      Volume: 20130730 Issue: 3 Pages: 769-785

    • DOI

      10.1007/s00029-013-0134-6

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-21340016, KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-24340013, KAKENHI-PROJECT-26247005
  • [Journal Article] Coherent tangent bundles and Gauss-Bonnet formulas for wave fronts2012

    • Author(s)
      Kentaro Saji, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Journal of Geometric Analysis

      Volume: vol.22 Issue: 2 Pages: 383-409

    • DOI

      10.1007/s12220-010-9193-5

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016, KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-23740045, KAKENHI-PROJECT-24340013
  • [Journal Article] A refinement of Foreman's four vertex theorem and its dual version2012

    • Author(s)
      Throbergsson and M. Umehara
    • Journal Title

      Kyoto J. Math.

      Volume: 52 Issue: 4

    • DOI

      10.1215/21562261-1728848

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] Zero mean curvature surfaces in L^3 containing a light-like line2012

    • Author(s)
      Shoichi Fujimori
    • Journal Title

      Comptes Reudus de l'Academie Sciences. Serie I. Mathematique,

      Volume: 350 Issue: 21-22 Pages: 975-978

    • DOI

      10.1016/j.crma.2012.10.024

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016, KAKENHI-PROJECT-21740052, KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-24340013
  • [Journal Article] Zero mean curvature surfaces in L3 containing a light-like line2012

    • Author(s)
      Shoichi Fujimori, Young Wook Kim, Sung-Eun Koh, Wayne Rossman, Heayong Shin, Hidenobu Takahashi, Masaaki Umehara, Kotaro Yamada, Seong-Deog Yang
    • Journal Title

      Comptes Reudus de l'Acadmie Sci. Srie I. Mathmatique

      Volume: vol.350 Pages: 975-978

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Corrigendum : Applications of a completeness lemma in minimal surface theory to various classes of surfaces2012

    • Author(s)
      Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: vol.44 Pages: 617-618

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] The behavior of curvature functions at cusps and inflection points2012

    • Author(s)
      S. Shiba and M. Umehara
    • Journal Title

      Differential Geometry and its Applications

      Volume: 30 Issue: 3 Pages: 285-299

    • DOI

      10.1016/j.difgeo.2012.04.001

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] Applications of a completeness lemma in minimal surface theory to various classes of surfaces2011

    • Author(s)
      Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: vol.43 Pages: 191-199

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] A2-singularities of hypersurfaces with non-negative sectional curvature in Euclidean space2011

    • Author(s)
      Kentaro Saji, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Kodai Mathematical Journal

      Volume: vol.34 Pages: 390-409

    • NAID

      130004687956

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Applications of a completeness lemma in minimal surface theory to various classes of surfaces2011

    • Author(s)
      M.Umehara, K.Yamada
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: 43 Issue: 3 Pages: 191-199

    • DOI

      10.1112/blms/bds017

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] CMC-1 trinoids in H^3 and metrics of constant curvature one…2011

    • Author(s)
      S.Fujimori, K.Yamada, et.al.
    • Journal Title

      Proceedings of Japan Academy, Ser.A.

      Volume: 87 Issue: 8 Pages: 144-149

    • DOI

      10.3792/pjaa.87.144

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016, KAKENHI-PROJECT-21740052, KAKENHI-PROJECT-21740053, KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-22540100
  • [Journal Article] The duality of conformally flat manifolds2011

    • Author(s)
      H.L.Liu, M.Umehara, K.Yamada
    • Journal Title

      Bulletin of the Brasilian Mathematical Society

      Volume: 42 Pages: 131-152

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Applications of a completeness lemma in minimal surface theory to various classes of surfaces2011

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: 43 Pages: 191-199

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Extrinsic diameter of immersed flat tori in S^32011

    • Author(s)
      Y.Kitagawa, M.Umehara
    • Journal Title

      Geom.Dedicata

      Volume: 155 Issue: 1 Pages: 105-140

    • DOI

      10.1007/s10711-011-9580-5

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] The duality of conformally flat manifolds2011

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Bulletin of the Brasilian Mathematical Society

      Volume: 42 Pages: 131-152

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Orientability of linear Weingarten surfaces, spacelike CMC-1 surfaces and maximal surfaces2011

    • Author(s)
      M.Kokubu and M.Umehara
    • Journal Title

      Math. Nachr.

      Volume: 284 Issue: 14-15 Pages: 1903-1918

    • DOI

      10.1002/mana.200910176

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20244005, KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-22540100
  • [Journal Article] <i>A</i><sub>2</sub>-singularities of hypersurfaces with non-negative sectional curvature in Euclidean space2011

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Kodai Mathematical Journal

      Volume: 34 Issue: 3 Pages: 390-409

    • DOI

      10.2996/kmj/1320935549

    • NAID

      130004687956

    • ISSN
      0386-5991, 1881-5472
    • Language
      English
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] A_2 singularities of hypersurfaces with non-negative sectional curvature…2011

    • Author(s)
      K.Saji, M.Umehara, K..Yamada
    • Journal Title

      Kodai Mathematical Journal

      Volume: 34 Pages: 390-409

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] The duality of conformally flat manifolds Bulletin of the Brasilian Mathematical Society2011

    • Author(s)
      Huili Liu, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      N. S.

      Volume: vol.42 Pages: 131-152

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] CMC-1 trinoids in H3 and metrics of constant curvature one with conical singularities on S22011

    • Author(s)
      Shoichi Fujimori, Yu Kawakami, Masatoshi Kokubu, Wayne Rossman, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Proceedings of Japan Academy

      Volume: vol.87,Ser.A Pages: 144-149

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] A simplification of the proof of Bol's conjecture on sextactic points2011

    • Author(s)
      M.Umehara
    • Journal Title

      Proc.Japan Acad.Ser.A

      Volume: 87 Issue: 1 Pages: 10-12

    • DOI

      10.3792/pjaa.87.10

    • NAID

      40017436335

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] The duality of conformally flat manifolds2011

    • Author(s)
      M.Umehara, K.Yamada
    • Journal Title

      Boll.London Math.Soc. 43

      Pages: 191-199

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] The duality of conformally flat manifolds2011

    • Author(s)
      Huili Liu, M.Umehara, K.Yamada
    • Journal Title

      Bulletin of the Brasilian Mathematical Society

      Volume: 42 Pages: 131-152

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] The duality between singular points and inflection points on wave fronts2010

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 47 Pages: 591-607

    • NAID

      120004844268

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Singularities of Blaschke normal maps of convex surfaces2010

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Comptes Reudus de l'Academie Sciences. Serie I.

      Volume: 348 Pages: 41-82

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] The duality between singular points and inflection points on wave fronts2010

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Osaka J.Math.

      Volume: 47 Pages: 591-607

    • NAID

      120004844268

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] A simplification of the proof of Bol's conjecture on sextactic points2010

    • Author(s)
      Masaaki Umehara
    • Journal Title

      Proc.Japan Acad.Ser.A

      Volume: 87 Pages: 10-12

    • NAID

      40017436335

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] The duality between singular points and inflection points on wave fronts2010

    • Author(s)
      Kentaro Saji, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Osaka Journal of Mathematics

      Volume: vol.47 Pages: 591-607

    • NAID

      120004844268

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Applications of completeness lemma in minimal surface theory to various classes of surfaces2010

    • Author(s)
      M.Umehara, K.Yamada
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: 43 Pages: 191-199

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Singularities of Blaschke normal maps of convex surfaces2010

    • Author(s)
      Kentaro Saji, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Comptes Reudus de l'Acadmie Sciences. Srie I. Mathmatique

      Volume: vol.348 Pages: 665-668

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] The duality between singular points and inflection points on wave fronts2010

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Osaka Journal of Mathematics

      Volume: 47 Pages: 591-607

    • NAID

      120004844268

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Singularities of Blaschke normal maps of convex surfaces2010

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      C.R.Acad.Sci.Paris.Ser.I

      Volume: 348 Pages: 665-668

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Journal Article] Singularities of Blaschke normal maps of convex surfaces2010

    • Author(s)
      Masaaki Umehara, Kotaro Yamada
    • Journal Title

      Comptes Reudus de I'Academie Sciences. Serie I.Mathematique

      Volume: 348 Pages: 665-668

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Ann.of Math. 169

      Pages: 491-529

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Ann. of Math 169

      Pages: 491-529

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] A_k singularities of wave fronts2009

    • Author(s)
      M. Umehara
    • Journal Title

      Math. Proceedings of Cambridge Philosophical Society (to appear)

    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Asymptotic behavior of flat surfaces in hyperbolic 3-space2009

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara K.Yamada
    • Journal Title

      J.Math.Soc.Japan 61

      Pages: 799-852

    • NAID

      10026998469

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Complete bounded null curves immersed in C3 and PSL (2, C)2009

    • Author(s)
      F. Martin, M. Umehara, K. Yamada
    • Journal Title

      Calculus of Variations and Partial Differential Equations 36

      Pages: 119-139

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Spacelike mean curvature one surfaces in de Sitter 3-space2009

    • Author(s)
      S.Fujimori, W.Rossman, M.Umehara K.Yamada, S.-D.Yang
    • Journal Title

      Communications in Analysis and Geometgry 17

      Pages: 383-427

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] New maximal surfaces in Minkowski 3-space with arbitrary genus and their cousins in de Sitter 3-space2009

    • Author(s)
      S.Fujimori, W.Rossman, M.Umehara K.Yamada, S.D.Yang
    • Journal Title

      Results in Math. 56

      Pages: 41-82

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Annals of Mathematics 169

      Pages: 491-529

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Asymptotic behavior of flat surface in hyperbolic 3-space2009

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara, K.Yamada
    • Journal Title

      Journal of the Mathematical Society of Japan 61

      Pages: 799-852

    • NAID

      10026998469

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Mathematical Proceedings of the Cambridge Philosophical Society2009

    • Author(s)
      K. Saji, M. Umehara, K. Yamada, Ak singularities of wave fronts
    • Journal Title

      Volume 146

      Pages: 731-746

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] New maximal surfaces in Minkowski 3-space with arbitrary genus and their cousins in de Sitter 3-space2009

    • Author(s)
      Shoichi Fujimori, Wayne Rossman, Masaaki Umehara, Kotaro Yamada and Seog-Deong Yang
    • Journal Title

      Results in Mathematics

      Volume: vol.56 Pages: 41-82

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Complete bounded null curves immersed in C3 and PSL(2, C)2009

    • Author(s)
      F.Martin, M.Umehara, K.Yamada
    • Journal Title

      Calculus of Variations and Partial Differential Equations 36

      Pages: 119-139

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Spacelike mean curvature one surfaces in de Sitter 3-space2009

    • Author(s)
      S.Fuuimori, W.Rossman, M.Umehara, K.Yamada, S.-D.Yang
    • Journal Title

      Communications in Analysis and Geometgry 17

      Pages: 383-427

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Complete bounded null curves immersed in C^3 and PSL(2,C)2009

    • Author(s)
      F.Martin, M.Umehara, K.Yamada
    • Journal Title

      Calculus of Variations and Partial Differential Equations 36

      Pages: 119-139

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Flat surfaces with singularities in Euclidean 3-space2009

    • Author(s)
      S. Murata, M. Umehara
    • Journal Title

      journal of Differential Geometry 82

      Pages: 279-316

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Spacelike mean curvature one surfaces in de Sitter $3$-space2009

    • Author(s)
      S.Fujimori, W.Rossman, M.Umehara K.Yamada, S.-D.Yang
    • Journal Title

      Communications in Analysis and Geometgry 17

      Pages: 383-427

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Flat surfaces with singularities in Euclidean 3-space2009

    • Author(s)
      S.Murata, M.Umehara
    • Journal Title

      Journal of Differential Geometry 82

      Pages: 279-316

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Complete bounded holomorphic curves immersed in C^2 with arbitrary genus2009

    • Author(s)
      F.Martin, M.Umehara, K.Yamada,
    • Journal Title

      Proc.Amer.Math.Soc. 137

      Pages: 3437-3450

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Ak singularities of wave fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Mathematical Proceedings of the Cambridge Philosophical Society 146

      Pages: 731-746

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Complete bounded null curves immersed in C^3 and PSL(2, C)2009

    • Author(s)
      F.Martin, M.Umehara, K.Yamada
    • Journal Title

      Calculus of Variations and Partial Differential Equations 36

      Pages: 119-139

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Ann. of Math. 169

      Pages: 491-529

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] A_k singularities of wave fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Math.Proc.of the Cambridge Philosophical Soc. 146

      Pages: 731-746

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] New Maximal Surfaces in Minkowski 3-Space with Arbitary Genus and Their Cousins in de Sitter 3-Space2009

    • Author(s)
      S.Fujimori, W.Rossman, M.Umehara, K.Yamada, S-D.Yang
    • Journal Title

      Result.Math. 56

      Pages: 41-82

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Complete bounded holomorphic curves immersed in C^2 with arbitrary genus2009

    • Author(s)
      F.Martin, M.Umehara, K.Yamada
    • Journal Title

      Proc.Amer.Math.Soc. 137

      Pages: 3437-3450

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Spacelike mean curvature one surfaces in de Sitter 3-space2009

    • Author(s)
      Shoichi Fujimori, Wayne Rossman, Masaaki Umehara, Kotaro Yamada and Seog-Deong Yang
    • Journal Title

      Communucations in Analysis and Geometry

      Volume: vol.17 Pages: 383-427

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Annals of Mathematics 169

      Pages: 491-529

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Asymptotic behavior of flat surfaces in hyperbolic 3-space2009

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara, K.Yamada
    • Journal Title

      Journal of the Math.Soc.Japan 61

      Pages: 799-852

    • NAID

      10026998469

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] The geometry of fronts2009

    • Author(s)
      K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Annals of Mathematics vol.169

      Pages: 491-529

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] A_k singularities of wave fronts2009

    • Author(s)
      K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Mathematical Proceedings of the Cambridge Philosophical Society 146

      Pages: 731-746

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] New maximal surfaces in Minkowski 3-space with arbitrary genus and their cousins in de Sitter 3-space2009

    • Author(s)
      S.Fujimori, W.Rossman, M.Umehara, K.Yamada, S.D.Yang
    • Journal Title

      Results in Math. 56

      Pages: 41-82

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Complete bounded holomorphic curves immersed in C2 with arbitrary genus2009

    • Author(s)
      Francisco Martin, Masaaki Umehara and Kotaro Yamada
    • Journal Title

      Proceedings of the American Mathematical Society

      Volume: vol.137 Pages: 3437-3450

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Asymptotic behavior of flat surface in hyperbolic 3-space2009

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara, K.Yamada
    • Journal Title

      Journal of the Mathematical Society of Japan 61

      Pages: 799-852

    • NAID

      10026998469

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21340016
  • [Journal Article] Singularities of Maxial surfaces2008

    • Author(s)
      S. Fujimori, K. Saji, M. Umehara and K. Yamada
    • Journal Title

      Math. Z. 259

      Pages: 827-848

    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] Cuspidal cross caps and singularities of maximal surfaces2008

    • Author(s)
      S. Fujimori, K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Mathematische Zeitschrift 259

      Pages: 827-848

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Singularities of maximal surfaces2008

    • Author(s)
      S.Fujimori, K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Math.Z. 259

      Pages: 827-848

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Singularities of maximal surfaces2008

    • Author(s)
      S. Fujimori, K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Mathematische Zeitschrift vol.259

      Pages: 1827-848

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] A_k singularities of wave fronts2008

    • Author(s)
      M. Umehara
    • Journal Title

      Kyushu Journal of Mathematics 62

      Pages: 259-280

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Inflection points and double tangents on anti-convex curves in the real projective plane2008

    • Author(s)
      M. Umehara
    • Journal Title

      Tohoku Math. J. 60

      Pages: 149-181

    • NAID

      110006691406

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Singularities of maximal surfaces2008

    • Author(s)
      S. Fujimori, K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Math. Z 259

      Pages: 827-848

    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Flat Moebius strips of given isotopy type in R^3 whose centerlines are geodesic or lines of curvature2008

    • Author(s)
      Y. Kurono, M. Umehara
    • Journal Title

      Geometriae Dedicata 134

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Inflection points and double tangents on anti-convex curves in the real projective plane2008

    • Author(s)
      G.Thorbergsson, M.Umehara
    • Journal Title

      Tohoku Mathematical Journal 60

      Pages: 149-181

    • NAID

      110006691406

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Inflection points and double tangents on anti-convex curves in the real projective plane2008

    • Author(s)
      G. Thorbergsson, M. Umehara
    • Journal Title

      Tohoku Mathematical Journal 60

      Pages: 149-181

    • NAID

      110006691406

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Flat Mobius strips of given isotopy type in R3 whose centerlines are geodesic or lines of curvature2008

    • Author(s)
      M. Umehara
    • Journal Title

      Geom. Dedicata 134

      Pages: 109-130

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204006
  • [Journal Article] Behavior of corank one singular points on weve fronts2008

    • Author(s)
      K. Saji, M. Umehara and K. Yamada
    • Journal Title

      Kyushu J. Math. 62

      Pages: 259-280

    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] FLat fronts in hyperbolic 3-space and their caustics2007

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara, K.Yamada
    • Journal Title

      Journal of the Mathematical Society of Japan vol.59

      Pages: 265-299

    • NAID

      10019540696

    • Data Source
      KAKENHI-PROJECT-16204006
  • [Journal Article] Flat fronts in hyperbolic 3-space and their caustics2007

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara, K.Yamada
    • Journal Title

      J. Math. Soc. Japan 59

      Pages: 265-299

    • NAID

      10019540696

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Flat fronts in hyperbolic 3-space and their caustics2007

    • Author(s)
      M. Kokubu, W. Rossman, M. Umehara and K. Yamada
    • Journal Title

      Journal of the Mathematical Society of Japan 265--299

      Pages: 59-59

    • NAID

      10019540696

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Journal Article] Flat fronts in hyperbolic 3-space and their caustics2007

    • Author(s)
      M. Kokubu, M. Umehara, K. Yamada
    • Journal Title

      Journal of Mathematical Society of Japan vol.59(1)

      Pages: 265-299

    • NAID

      10019540696

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] Flat fronts in hyperbolic 3-space and their caustics2007

    • Author(s)
      M. Kokubu, W. Rossman, M. Umehara, K. Yamada
    • Journal Title

      J. Math. Soc. Japan 59

      Pages: 265-299

    • NAID

      10019540696

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16204006
  • [Journal Article] Flat fronts in hyperbolic 3-space and their caustics2007

    • Author(s)
      M.Kokubu , W. Rossman, M. Umehara and K. Yamada
    • Journal Title

      J. of Math. Soc. Japan 50

      Pages: 265-299

    • NAID

      10019540696

    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] Maximal surfaces with singularities in Minkowski space2006

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Hokkaido Mathematical Journal 35.1

      Pages: 13-40

    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] Maximal surfaces with singularities in Minkowski space2006

    • Author(s)
      M. Umehara, K. Yamada
    • Journal Title

      Hokkaido Mathematical Journal vol.35(1)

      Pages: 13-40

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340019
  • [Journal Article] Maximal surfaces with singularities in Mikowski space2006

    • Author(s)
      M.Umehara, et al.
    • Journal Title

      Hokkaido Math.J. 35

      Pages: 13-40

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Maximal surfaces with singularities in Mikowski space2006

    • Author(s)
      Umehara, K. Yamada
    • Journal Title

      Hokkaido Math. J. 35

      Pages: 13-40

    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Maximal surfaces with singularities in Mikowski space2006

    • Author(s)
      M.Umehara, K.Yamada
    • Journal Title

      Hokkaido Math. J. 35

      Pages: 13-40

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Maximal surfaces with singularities in Minkowski space2006

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA et al.
    • Journal Title

      Hokkaido Mathematical Journal (in press)

    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Singularities of flat fronts in hyperbolic 3-space2005

    • Author(s)
      Masatoshi KOKUBU, Wayne ROSSMAN, Kentaro SAJI, Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Pacific Journal of Mathematics volume 221 no.2

      Pages: 303-351

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Singularities of flat fronts in hyperbolic 3-space2005

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA et al.
    • Journal Title

      Pacific Journal of Mathematics (in press)

    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Symmetric CMC-1 surfaces with irregular ends2005

    • Author(s)
      Wayne ROSSMAN, Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Clay Mathematical Proceedings volume 2

      Pages: 561-584

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Singularities of flat fronts in hyperbolic 3-space2005

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA et al.
    • Journal Title

      Pacific Journal of Mathematics 221・2

      Pages: 303-351

    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Singularities of flat fronts in hyperbolic 3-space2005

    • Author(s)
      M.Kokubu, W.Rossman, M.Umehara, K.Yamada
    • Journal Title

      Pacific J. Math. 221

      Pages: 303-351

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Constructing mean curvature 1 surfaces in H^3 with irregular ends.2005

    • Author(s)
      W.Rossmun, M.Umehara, K.Yamada
    • Journal Title

      Global Theory of Minimal Surfaces (ed. D.Hoffman) Clay Mathematics Proceedings (A.M.S.) 2

      Pages: 561-584

    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Singularites of flat fronts in hyperbolic 3-space2005

    • Author(s)
      M.Kokubu, W.Rossmsan, K.Saji, M.Umehara, K.Yamada
    • Journal Title

      Pacific J.Math. 221・(2)

      Pages: 303-351

    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Maximal surfaus in Minkowski space2005

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Hokkaido Jounal of Mathematics (in press)

    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Flat fronts in hyperbolic 3-space2004

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA et al.
    • Journal Title

      Pacific Journal of Mathematics 206-1

      Pages: 149-175

    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Flat fronts in hyperbolic 3-space2004

    • Author(s)
      Masatoshi KOKUBU, Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Pacific Journal of Mathematics volume 216, no.1

      Pages: 149-175

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] A global theory of flexes of periodic functions2004

    • Author(s)
      G.Thorbergsson, M.Umehara
    • Journal Title

      Nagoya Math. J. 173

      Pages: 85-138

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] An analogue of the UP-iteration for constant mean curvature one surfaces in Hyperbolic 3-space2004

    • Author(s)
      C.McCune, M.Umehara
    • Journal Title

      Diff. Geom. and its Appl. 20

      Pages: 197-207

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] A global Theory of flexes of periodic functions2004

    • Author(s)
      Thorbergsson, Umehara
    • Journal Title

      Nagoya Math.J. 173

      Pages: 85-138

    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Flat fronts in hyperbolic 3-space2004

    • Author(s)
      M.Kokubu, M.Umehara, K.Yamada
    • Journal Title

      Pacific J. Math. 216

      Pages: 149-175

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-15340024
  • [Journal Article] Mean curvature 1 surfaces in hyperbolic 3-space with low total curvature2003

    • Author(s)
      Wayne ROSSMAN, Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Tohoku Mathematical Journal volume 55

      Pages: 375-395

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Mean curoatuve 1 surfaces in hyperbolic 3-space with low total curuatnne2003

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA et al.
    • Journal Title

      Tohoku Mathematical Journal 55

      Pages: 375-395

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] An elementary proof of small's formula for null canals in PSL(2.β)and an analogue for leqendrian curves in PSL(2.α)2003

    • Author(s)
      Masaaki UMEHARA, Kotaro YAMADA et al.
    • Journal Title

      Osaka Journal of Mathematical 40

      Pages: 681-715

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] An elementary proof of Small's formula for null curves in PSL(2,C) and an analogue for Legendrian curves in PSL(2,C)2003

    • Author(s)
      Masatoshi KOKUBU, Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Osaka Journal of Mathematics volume 55

      Pages: 375-395

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] An analogue of minimal surface theory in Sl(n,C))2002

    • Author(s)
      M.Kokubu, M.Takahashi, M.Umehara, K.Yamada
    • Journal Title

      Trans.Amer.Math.Soc. 354

      Pages: 1299-1325

    • Description
      「研究成果報告書概要(和文)」より
    • Data Source
      KAKENHI-PROJECT-14204004
  • [Journal Article] An analogue of minimal surface theory in Sl(n,C)2002

    • Author(s)
      M.Kokubu, M.Takahashi, M.Umehara, K.Yamada
    • Journal Title

      Trans.Amer.Math.Soc. 354

      Pages: 1299-1325

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14204004
  • [Journal Article] An analogue of minimal surface theory in SL(2,C)/ SU(n)2002

    • Author(s)
      Masatoshi KOKUBU, Masaro TAKAHASHI, Masaaki UMEHARA, Kotaro YAMADA
    • Journal Title

      Transactions of the American Mathematical Society volume 354

      Pages: 1299-1325

    • Description
      「研究成果報告書概要(欧文)」より
    • Data Source
      KAKENHI-PROJECT-14340024
  • [Journal Article] Behavior of corank one singular points on wave front

    • Author(s)
      K. Saji, M. Umehara, K. Yamada
    • Journal Title

      Kyushu Journal of Mathematics vol.62(1)

      Pages: 259-280

    • NAID

      110006648027

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18340019
  • [Presentation] Umbilics of surfaces in Euclidean space or Lorentz-Minkowski space2024

    • Author(s)
      梅原雅顕
    • Organizer
      The 4th Internatinal Conference on Surfaces, Analysis and Numerics in Differetial Geometry
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20794
  • [Presentation] 実解析写像の像の解析的拡張の可能性の判定と応用2023

    • Author(s)
      梅原雅顕
    • Organizer
      京都大学数理解析研究所
    • Invited
    • Data Source
      KAKENHI-PROJECT-23K20794
  • [Presentation] Null hypersurfaces as wave fronts in Lorentz-Minkowski space2022

    • Author(s)
      梅原雅顕
    • Organizer
      Workshop on Differential Geometry and Geometric Analysis -Celebration of Professor Miyuki Koiso's Retirement-(3月・九州大学)
    • Invited
    • Data Source
      KAKENHI-PROJECT-23K20794
  • [Presentation] Maximal surfaces in Lorentz-Minkowski 3-space and related topics2022

    • Author(s)
      梅原雅顕
    • Organizer
      Singularity Theory and Differential Geometry Rims-Sing3 work Shop
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K20794
  • [Presentation] Criteria of unextendability of the images of real analytic maps and their application for constant mean curvature one surfaces in de Sitter 3-space2022

    • Author(s)
      梅原雅顕
    • Organizer
      Workshop on Surface Theory(国際研究集会・3月・横浜)
    • Invited
    • Data Source
      KAKENHI-PROJECT-23K20794
  • [Presentation] 3次元 Euclid 空間の曲面の特異点の対称性について2021

    • Author(s)
      梅原雅顕
    • Organizer
      福岡大学微分幾何研究集会(11月・福岡大学セミナーハウス)
    • Invited
    • Data Source
      KAKENHI-PROJECT-23K20794
  • [Presentation] 流体力学的双対性を用いた時空の極大曲面に対する Bernstein 型の定理の拡張について2019

    • Author(s)
      赤嶺新太郎,梅原雅顕,山田光太郎
    • Organizer
      日本数学会2019年度年会(於:東京工業大学)
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 3次元球面の平坦トーラスの外的直径について2019

    • Author(s)
      梅原雅顕
    • Organizer
      名城研究集会「多様体上の種々の幾何構造の融合」(於:名城大学)
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] Constant Mean Curvature Hypersurfaces with light-like points in Lorentzian manifolds2018

    • Author(s)
      梅原雅顕
    • Organizer
      Geometric shape generation (於:ウィーン工科大)
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 時空の極大曲面とEuclid空間の極小曲面の流体力学的双対性とその応用2018

    • Author(s)
      梅原雅顕
    • Organizer
      部分多様体論・湯沢2018(於:湯沢グランドホテル)
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 時空の平均曲率一定曲面上の光的な点における直線定理2018

    • Author(s)
      梅原雅顕
    • Organizer
      福岡大学微分幾何研究会
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] Maximal surfaces in Lorentz-Minkowski-space containing light-like lines2018

    • Author(s)
      梅原 雅顕
    • Organizer
      泉屋周一先生退職記念研究集会
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] Hypersurfaces with light-like points in Lorentzian manifolds2018

    • Author(s)
      梅原雅顕
    • Organizer
      15th International Workshop on Real and Complex Singularities(於:ブラジル,サンパウロ大学・サンカルロス校)
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] Surfaces with light-like points in Lorentz-Minkowski 3-space2018

    • Author(s)
      梅原 雅顕
    • Organizer
      International workshop "Geometry of Submanifolds and Integrable System"
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 特異点の微分幾何学「3次元時空の極大曲面をテーマにして」2017

    • Author(s)
      梅原 雅顕
    • Organizer
      日本応用数理学会2017年度 年会・総合講演
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 3次元時空の極大曲面の解析的延長について2017

    • Author(s)
      梅原 雅顕
    • Organizer
      北海道大学・数学教室談話会
    • Place of Presentation
      北海道大学
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 特異点をもつ曲面の幾何学2016

    • Author(s)
      梅原 雅顕
    • Organizer
      第63回幾何学シンポジウム
    • Place of Presentation
      岡山大学・理学部
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 曲面の臍点の指数について2015

    • Author(s)
      梅原 雅顕
    • 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
    • Year and Date
      2015-11-01
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] Indices of isolated umbilics on surfaces2015

    • Author(s)
      梅原 雅顕
    • Organizer
      Geometric Analysis in Geometery and Topology 2015
    • Place of Presentation
      東京理科大学・森戸記念館
    • Year and Date
      2015-11-15
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 特異点をもつ曲面の等長変形について2014

    • Author(s)
      梅原 雅顕
    • Organizer
      広島幾何学研究集会2014
    • Place of Presentation
      広島大学理学部
    • Year and Date
      2014-10-10
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 半正定値計量と曲面の特異点2014

    • Author(s)
      梅原 雅顕
    • Organizer
      部分多様体論・湯沢2014
    • Place of Presentation
      湯沢グランドホテル
    • Year and Date
      2014-11-21
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] Geometry of Surfaces with singularities2014

    • Author(s)
      梅原 雅顕
    • Organizer
      微分幾何学国際研究集会Transformations and Singularities
    • Place of Presentation
      ウィーン工科大学
    • Year and Date
      2014-09-17
    • Invited
    • Data Source
      KAKENHI-PROJECT-26247005
  • [Presentation] 特異点をもつ曲面の微分幾何学2012

    • Author(s)
      梅原雅顕
    • Organizer
      日本数学会2012年度年会
    • Place of Presentation
      トッパン・ホール(招待講演)
    • Year and Date
      2012-03-27
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] 変曲点を持たない平面閉曲線について2011

    • Author(s)
      梅原雅顕
    • Organizer
      RIMS研究集会(部分多様体の微分幾何学的研究)
    • Place of Presentation
      京都大学数理解析研究所(招待講演)
    • Year and Date
      2011-06-27
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] 波面の幾何学-その内的双対性とGauss-Bonnetの定理への応用-2010

    • Author(s)
      梅原雅顕
    • Organizer
      日本数学会2010年度年会・企画特別講演
    • Place of Presentation
      慶應義塾大学・理工学部
    • Year and Date
      2010-03-26
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Presentation] 波面の幾何学-その内的双対性と Gauss-Bonnet の定理への応用-2010

    • Author(s)
      梅原雅顕
    • Organizer
      日本数学会2010年度年会・企画特別講演
    • Place of Presentation
      慶應義塾大学・理工学部 (神奈川県)
    • Year and Date
      2010-03-26
    • Data Source
      KAKENHI-PROJECT-19204005
  • [Presentation] Differential Geometry of surfaces with singularities

    • Author(s)
      梅原雅顕
    • Organizer
      12th International Workshop on Real and Complex Singularities
    • Place of Presentation
      サンパウロ大学サンカルロス校,ブラジル
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] Zero Mean curvature surfaces in Lorentz-Minkowski 3-space which changes type across a light-like line

    • Author(s)
      梅原雅顕
    • Organizer
      Internatinal workshop on special Geometry and Minimal Subminifolds
    • Place of Presentation
      東北大学・理学研究科
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] 双曲計量と3次元de Sitter 空間の平均曲率1の曲面

    • Author(s)
      梅原雅顕
    • Organizer
      福岡大微分幾何研究会(Geometry and something)
    • Place of Presentation
      福岡大学セミナーハウス
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] 卵形線の縮閉線の形状と特異点

    • Author(s)
      梅原雅顕
    • Organizer
      福岡大学微分幾何研究会(Geometry or Something)
    • Place of Presentation
      福岡大学セミナーハウス
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] 特異点の内的不変量と等長変形

    • Author(s)
      梅原雅顕
    • Organizer
      山口幾何学研究集会2013 (進展する曲面論 - Advances in Surface Theory )
    • Place of Presentation
      山口大学理学部
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] Differential Geometry of surfaces with singularities

    • Author(s)
      梅原雅顕
    • Organizer
      The 8th Geometry Conference for the Friendship of China and Japan
    • Place of Presentation
      四川大学,中国
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] 3次元時空の空間的極大曲面と、その時間的極小曲面への型変化について

    • Author(s)
      梅原雅顕
    • Organizer
      部分多様体論・湯沢2012
    • Place of Presentation
      湯沢町・湯沢グランドホテル
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
  • [Presentation] 交叉帽子の微分幾何学

    • Author(s)
      梅原雅顕
    • Organizer
      部分多様体と四元数構造 (RIMS研究集会)
    • Place of Presentation
      京都大学数理解析研究所
    • Invited
    • Data Source
      KAKENHI-PROJECT-22244006
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