UMEHARA MASAAKI 梅原雅顕

… Alternative Names

Researcher Number	90193945
Other IDs
External Links
Affiliation (Current)	2019 : 東京工業大学, 情報理工学院, 教授
Affiliation (based on the past Project Information) *help	2016 – 2019 : 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
Review Section/Research Field	Principal Investigator Geometry / Geometry Except Principal Investigator Geometry / Geometry / 代数学・幾何学 / 解析学
Keywords	Principal Investigator 双曲型空間 / 平均曲率 / 曲面 / ガウス曲率 / ガウス写像 / 曲線 / 波面 / 特異点 / 変曲点 / 極小曲面 … More Except Principal Investigator 特異点 / 微分幾何 / 幾何学 / 等径超曲面 / ルジャンドル特異点 / 平均曲率 / 極小曲面 / 極大曲面 / ラグランジュ特異点 / 平均曲率一定曲面 / 安定性 / 双曲空間 / フロント / ワイエルストラス表現 / ガウス写像 / 部分多様体 / obstruction / 正則閉曲線 / 複素多様体 / 直径 / 非線形現象 / カスプ辺 / extremal metric / 可積分系 / アインシュタイン計量 / ２重接触 / 平坦トーラス / cuspidal edge / ３次元球面 / stability / ミンコフスキー時空 / cuspidal cross cap / ワイエルストラス表現公式 / 特異点論 / balanced metric / 退化 / 相対性理論 / 特異点の微分幾何 / test configuration / swallowtail / ミンコフスキー空間 / シュレディンガー方程式 / 離散化 / 世界面 / 剛性 / 微分幾何学 / Ricci soliton / ローレンツ多様体 / 調和写像 / 曲面 / 全曲率 / ケーラー多様体 / DS-diagram / Einstein計量 / L2調和形式 / CMC-1 面 / 接触幾何 / degeneration / 熱方程式 / ブレーン / 調和写像論 / isoparametric hypersurface / ド・ジッター空間のCMC1曲面 / 超曲面の幾何学 / 定数磁場 / 量子代数群 / カオス性 / 量子コホモロジー論 / Donaldson-Tian-Yau予想 / Virasoro代数 / Montesinos knot / KacーMoody群 / シンプレクテイック幾何 / 対称空間 / 解消トンネル / extremal Kahle計量 / スペシャルラグランジアン部分多様体 / グラフ型波面 / G_2軌道 / Cannon-Thurston map / 3ノイド / K-安定性 / リッチ平坦ケーラー計量 / 超幾何微分方程式 / シンプレクテイック幾何学 / homogeneous hypersurface / 例外ホロノミー / 波動方程式 / ４次元多様体の対数変換 / Seiberg-Witten equation / 橋本変換 / front bundles / ホロタイトはめ込み / ラグランジュ・ルジャンドル部分多様体 / duality / 可積分幾何 / 交叉帽子 / 剛性定理 / 一般化された幾何学 / 平均曲率一定超曲面 / 認容半単純元 / 離散変形KdV方程式 / バンド交差 / スピントロニクス / 3次元等質空間 / Siegel尖点形式の次元予想 / Isoparametric hypersurfaces / 非ブライアント型 / ディラック作用素 / 大域的性質 / ポアソン構造 / ガウス・ボンネ型定理 / Weierstrass representation / 垂足部分集合 / 重複度 / Hitchin-Kobayashi対応 / singularities / 概複素曲線 / flat surface / 定平均曲率曲面 / 定スカラー曲率ケーラー計量 / 小平次元 / 4元数ケーラー多様性 / 接触構造 / 双曲構造 / 双曲空間の平坦曲面 / 局所ミラー対称性 / 相対論 / ホログラフィー原理 / 軌道の幾何学 / 平均曲率流 / Cannon-Thurston-Dicks分解 / 微分幾何一般(含種々の幾何構造、離散幾何) / 分岐被覆 / tt幾何 / からビーヤオ多様体 / Austere部分多様体 / ハミルトン変形 / スペシャル幾何 / front / virtual fiber / 安定解 / 量子コホモロジー / 自己共役 / 擬フックス群 / 四元数ケーラー多様体 / 光化学反応 / 例外ホロノミー群 / 退化点 / モ-ス理論 / 擬微分作用素 / 変分問題 / ドラ-ム理論 / 焦集合 / 垂足曲線 / 3p次の平面関数 / CMC-1 曲面 / 佐々木構造 / 弾性曲線 / 時空間図形 / 非線型シュレディンガー方程式 / ネーデルの不変量 / nonlinear Schro-dinger equation / geometry / フレアホモロジー / M理論 / ラグランジアン部分多様体 / coherent tangent bundles / L2調和1形式 / Kahler-Einstein計量 / Evolution equation / ミラー対称性 / モンジュ=アンペール方程式 / リッチ流 / ノン-ケーラー多様体_ / 波面 / Harmonic maps / 標準的分割 / 主曲率 / 漸近安定性 / 解の滑らかさ / 一般化された超ケーラ－構造 / 折り目特異点 / Chow-mumford安定性 / クレパント解消予想 / ラグランジュ錐 / 余次元 / 余次元2 / 一般化された複素構造 / 平均曲率-定曲面 / 穴あきトーラス / 代数多様体 / 連接接束 / 多重表象 / 光的絶対全曲率 / ローレンツ幾何 / 間隙定理 / 一般化されたケーラー構造 / パッフ系 / インスタントン / 極複素構造 / 曲面束 / 部分コンパクト化 / Darboux枠 / 事象の地平線 / Zhangの臨界計量 / ガウス曲率 / 交叉数 / ファインマン積分 / Bevnstein問題 / 新谷ゼーター関数 / Canonical decomposition / 偏極代数多様体 / 運動方程式 / 宇宙論 / Austere submanifolds / へガード分解 / Special Holonomy / 特殊ホロノミー群 / 変形理論 / Gauss map / 双曲空間の平坦波面 / 双対性の曼荼羅 / 一般次元 / 擬球面 / バルクエッジ対応 / 直径予想 / 直線定理 / ホロ球面 / 可視化 / 等径関数 / ワイエルストラス型表現 / 極小部分多様体 / トーリック微分幾何 / オサーマン型不等式 / 調和Weylテンソル / ド・ジッター空間の平均曲率１曲面 / constant scalar curvature / 4 dimensional Kahler manifold / Hilbert-Mumford漸近安定性 / スピン作用 / エントロピー / 重力場レンズ / 零平均曲率曲面 / 基本群 / 特異点のモデュライ / リッチ平坦計量 / 2次特殊線形群の水平表現 / 等質超曲面 / Surfaces of constant mean curvature / 定スカラー曲率 / シンプレエクティック不変量 / 斜傾幾何学 / 局所等角ケーラー構造 / サイバーグウィッテン方程式 / 一般化された幾何構造 / トランスレイティングソリトン / 平坦フロント / total curvature / 発展方程式 / Minkowski空間 / 管状部分多様体 / 非連結 / 等径・等質超曲面 / 3次元多様体 / 渦系の方程式 / 双対性 / ホロ平坦 / 空間的部分多様体 / small cancellation theory / 一般化されたケーラ－構造 / 画像処理 / CMC-1曲面 / 超対称性 / surface / 因果特性の変化 / 双曲計量 / 2橋結び目 / Chow計量 / ヘガード分解 / ガウス・ボンネの定理 / ワイエルストラス型表現公式 / 代数群 / Hodge構造の分類空間 / 幾何構造 / 画像処理,ブレーン宇宙 / リ-代数 / extremal-Kahler計算 / 特異性 / Cannon-Thurston写像 / 共形平坦計量 / 極小ラグランジュ部分多様体 / バンド交差理論 / 反ド・シッター空間 / 穴あきトーラス束 / Local Mirror Symmetry / シンプレクティック多様体 / Completely integrable systems / 存在問題 / 渦糸 / 摂動展開 / 型変化 / maximal surface / 強可逆結び目 / モノドロミー群 / 共形型 / Supersymmetry / canonical deccmposition / パンルヴェ方程式 / 磁場 / 可積分な運動 / 佐々木アインシュタイン計量 / 光的超曲面 / テスト配位 / 光的幾何学 / 渦糸の方程式 / Extremal metric / constant mean curvature / exceptional holonomy / 偏微分方程式 / 単純Lie群 / 反ドジッター空間 / 特殊Hecke群の表現 / 双エルミート構造 / ローレンツ空間形 / ラグランジュ部分多様体 / モーメント写像 / 特異摂動 / 特異曲率 / 偏極射影代数多様体 / 変形 / Variational problem / tt戸田格子 / 例学ホロノミー / Chow-Mumford漸近安定性 / 漸近的ベルグマン核 / 垣水複体 / 交叉理論 / Yang-Mills-Higgs場 / ホップ代数 / 3-dimensional nomogeneous space / 焦点集合 / 曲面・超曲面 / Yang-Mills接続 / wave fronts / 穴開きトーラス束 / 超曲面 / Hーdeformable / 重力インスタントン / トランスノーマル関数 / constant mean curvature surface / conformally flat / 射影kahler多様体 / Einstein metric / Gauss-Bonnet formula / ホロ凸 / 複素旗多様体 / 距離空間のモジュライ / Hilbert-mumford安定性 / Shape operators / カラビーヤオ構造 / Gauss mapping / 境界 / 曲線 / 量子群 / 線形ワインガルテン曲面 / ド・ジッター空間 / vortex filament equation / 結び目 / 複素解析幾何 / ディラック型作用素 / Test configuration / 離散幾何学 / 特異点に微分幾何 / グラフ型大波面 / comnplet / トポロジカル絶縁体 / Seiberg-Witten不変量 / ザイフェルト曲面 / 平坦曲面 / Instanton / Caltin-Lu-Tian-Zelditch / 運動量写像 / curve / ルジャンドル双対性 / ハミルトニアン / 型作用素 / ツバメの尾曲面 / Lagrangian submanifolds / 絡み輪 Less

Singularities of surfaces and hypersurfaces in Lorentzian space formsOngoing
- Principal Investigator
  
  山田光太郎
- 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 InvestigatorOngoing
- Principal Investigator
  
  梅原雅顕
- 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
- 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
- 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

[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] 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] Quadrics and Scherk towers2018
- Author(s)
  Shoichi Fujimori, Udo Hertrich-Jeromin, Masatoshi Kokubu, Masaaki Umehara, and Kotaro Yamada
- Journal Title
  
  Monatshefte f?r Mathematik
  
  Volume : 印刷中
- DOI
  10.1007/s00605-017-1075-5
- Open Access / Int'l Joint Research / Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K05219, KAKENHI-PROJECT-17K05227, KAKENHI-PROJECT-26247005
[Journal Article] C^1-umbilics with arbitrarily high indices2017
- Author(s)
  N. Ando, T. Fujiyama and M. Umehara
- Journal Title
  
  Pacific Journal of Mathematics
  
  Volume : 288 Pages : 1-27
- DOI
  10.2140/pjm.2017.288.1
- Acknowledgement Compliant / Peer Reviewed
- 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
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26247005
[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
- Acknowledgement Compliant / Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26247005
[Journal Article] Mixed type surfaces with bounded mean curvatures in 3-dimensional space-times2017
- Author(s)
  A. Honda, M. Koiso, M. Kokubu, M. Umehara and Kotaro Yamada
- Journal Title
  
  Differential Geometry and its Applications
  
  Volume : 52 Pages : 64-77
- DOI
  10.1016/j.difgeo.2017.03.009
- Open Access / Acknowledgement Compliant / Peer Reviewed
- 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
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400066
[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
  
  Jurnal of Mathematical Society of Japan
  
  Volume : 69 Issue : 1 Pages : 417-457
- DOI
  10.2969/jmsj/06910417
- Language
  English
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-16H03937
[Journal Article] Entire zero mean curvature graphs of mixed type in Lorent-Minkowski 3-space2017
- Author(s)
  S. Fujimori, Y. Kawakami, M. Kokubu, W. Rossman, M. Umehara and K. Yamada
- Journal Title
  
  The Quarterly Journal of Mathematics
  
  Volume : in press Pages : 1-37
- DOI
  10.1093/qmath/haw038
- Acknowledgement Compliant / Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16H03937, KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-25287012, KAKENHI-PROJECT-25800047, KAKENHI-PROJECT-15K04840, 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
- Acknowledgement Compliant / Peer Reviewed
- 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
  
  Geometry and topology of manifolds, Springer Proc. Math. Stat.
  
  Volume : 154 Pages : 1-39
- DOI
  10.1007/978-4-431-56021-0_14
- Open Access / Acknowledgement Compliant / Int'l Joint Research / Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400066, KAKENHI-PROJECT-26400087
[Journal Article] Isometric deformations of cuspidal edges2016
- Author(s)
  K. Naokawa, M. Umehara and K. Yamada
- Journal Title
  
  Tohoku Mathematical Journal Series 2
  
  Volume : 68 Pages : 73-90
- DOI
  10.2748/tmj/1458248863
- Acknowledgement Compliant / Peer Reviewed
- Data Source
  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
- Acknowledgement Compliant / Open Access / Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26247005
[Journal Article] A duality for conformally flat hypersurfaces2015
- Author(s)
  M. Hasegawa, A. Honda, K. Naokawa, K. Saji, M. Umehara, K. Yamada
- Journal Title
  
  eitraege zur Algebra und Geometrie / Contributions to Algebra and Geometry
  
  Volume : 26 Pages : 1-34
- DOI
  10.1142/s0129167x1540008x
- Open Access / Acknowledgement Compliant / Peer Reviewed
- 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 : -
- Acknowledgement Compliant / Peer Reviewed
- 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
- Acknowledgement Compliant / Open Access / Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26247005
[Journal Article] A construction of a complete bounded null curve in C32014
- 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
- 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
- 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
- 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 Mathematical Journal
  
  Volume : 63 Pages : 189-207
- DOI
  10.1307/mmj/1395234364
- Open Access / Peer Reviewed
- 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
  
  Rev. Mat. Iberoam.
  
  Volume : 30
- 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] Intrinsic invariants of cross caps Selecta Mathematica2014
- Author(s)
  M. Hasegawa, A. Honda, K. Naowaka, M. Umehara and K. Yamada,
- Journal Title
  
  Selecta Math. New Ser.
  
  Volume : 未定
- DOI
  10.1007/s00029-013-0134-6
- Open Access / Acknowledgement Compliant / Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-26247005, KAKENHI-PROJECT-21340016, KAKENHI-PROJECT-24340013
[Journal Article] Hyperbolic Metrics on Riemann Surfaces and Space-Like CMC-1 Surfaces in de Sitter 3-Space2013
- 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
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21740052, KAKENHI-PROJECT-22540100
[Journal Article] Closed planar curves without inflections2013
- Author(s)
  S. Ohno, T. Ozawa and M. Umehara
- Journal Title
  
  Proc. Amer. Math. Soc.
  
  Volume : 141
- 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
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21340016
[Journal Article] Coherent tangent, bundles and Gauss-Bonnet formulas for wave fronts2012
- Author(s)
  Kentaro Saji, Masaaki Umehara and Kotaro Yamada
- Journal Title
  
  J. Geom. Anal.
  
  Volume : vol.22 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
- DOI
  10.1215/21562261-1728848
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22244006
[Journal Article] Zero mean curvature surfaces in L3 containing a light-like line, Comptes Rendus Mathematique2012
- Author(s)
  Shoichi Fujimori
- Journal Title
  
  Academie des Sciences, Paris
  
  Volume : 350 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
- 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
- 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 Pages : 191-199
- DOI
  10.1112/blms/bds017
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22244006
[Journal Article] CMC-1 trinoids in hyperbolic 3-space and metrics of constant curvature one with conical singularities on the 2-sphere2011
- Author(s)
  S.Fujimori, K.Yamada, et.al.
- Journal Title
  
  Proceedings of the Japan Academy, Series A
  
  Volume : 87 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 Pages : 105-140
- DOI
  10.1007/s10711-011-9580-5
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22244006
[Journal Article] A2-singularities of hypersurfaces with non-negative sectional curvature in Euclidean space2011
- Author(s)
 K.Saji, M.Umehara, K.Yamada
- Journal Title
 
 Kodai Math.J.
 
 Volume : 34 Issue : 3 Pages : 390-409
- DOI
 10.2996/kmj/1320935549
- Language
 English
- 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
  
  Mathematische Nachrichten
  
  Volume : 284 Pages : 1903-1918
- DOI
  10.1002/mana.200910176
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20244005, KAKENHI-PROJECT-22244006, KAKENHI-PROJECT-22540100
[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 Pages : 10-12
- DOI
  10.3792/pjaa.87.10
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340019
[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] 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

1. YAMADA Kotaro (10221657)

# of Collaborated Projects : 15results

# of Collaborated Products : 110results
2. MABUCHI Toshiki (80116102)

# of Collaborated Projects : 12results

# of Collaborated Products : 0results
3. W.F. Rossman (50284485)

# of Collaborated Projects : 9results

# of Collaborated Products : 29results
4. KOKUBU Masatoshi (50287439)

# of Collaborated Projects : 8results

# of Collaborated Products : 15results
5. KOISO Norihito (70116028)

# of Collaborated Projects : 8results

# of Collaborated Products : 0results
6. MIYAOKA Reiko (70108182)

# of Collaborated Projects : 8results

# of Collaborated Products : 0results
7. ISHIKAWA Goo (50176161)

# of Collaborated Projects : 7results

# of Collaborated Products : 0results
8. GOTO Ryushi (30252571)

# of Collaborated Projects : 6results

# of Collaborated Products : 0results
9. NISHITANI Tatsuo (80127117)

# of Collaborated Projects : 6results

# of Collaborated Products : 0results
10. ENOKI Ichiro (20146806)

# of Collaborated Projects : 6results

# of Collaborated Products : 0results
11. NAGATOMO Yasuyuki (10266075)

# of Collaborated Projects : 6results

# of Collaborated Products : 0results
12. FUJIMORI Shoichi (00452706)

# of Collaborated Projects : 5results

# of Collaborated Products : 17results
13. KOIKE Shigeaki (90205295)

# of Collaborated Projects : 4results

# of Collaborated Products : 0results
14. SAKUMA Makoto (30178602)

# of Collaborated Projects : 4results

# of Collaborated Products : 2results
15. IZUMIYA Shyuichi (80127422)

# of Collaborated Projects : 4results

# of Collaborated Products : 0results
16. ONO Kaoru (20204232)

# of Collaborated Projects : 4results

# of Collaborated Products : 0results
17. TAMARU Hiroshi (50306982)

# of Collaborated Projects : 4results

# of Collaborated Products : 0results
18. INOGUCHI Junichi (40309886)

# of Collaborated Projects : 4results

# of Collaborated Products : 0results
19. 竹腰見昭 (20188171)

# of Collaborated Projects : 4results

# of Collaborated Products : 0results
20. MATSUMOTO Takao (50025467)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
21. OTSU Yukio (80233170)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
22. NAMBA Makoto (60004462)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
23. IBUKIYAMA Tomoyoshi (60011722)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
24. OHMOTO Toru (20264400)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
25. TONEGAWA Yoshihiro (80296748)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
26. KUROSE Takashi (30215107)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
27. SHODA Toshihiro (10432957)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
28. HASHIMOTO Hideya (60218419)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
29. MASHIMO Katsuya (50157187)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
30. OHNITA Yoshihiro (90183764)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
31. IWASAKI Katsunori (00176538)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
32. KAJIWARA Kenji (40268115)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
33. KITAGAWA Yoshihisa (20144917)

# of Collaborated Projects : 3results

# of Collaborated Products : 2results
34. DOI Hideo (50197993)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
35. 長瀬道弘 (70034733)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
36. 宇野勝博 (70176717)

# of Collaborated Projects : 3results

# of Collaborated Products : 0results
37. MARTIN Guest (10295470)

# of Collaborated Projects : 2results

# of Collaborated Products : 4results
38. MOTOKO Kotani (50230024)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
39. AIHARA Yoshihiro (60175718)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
40. ITOH Mitsuhiro (40015912)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
41. USAI Sampei (90117002)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
42. OHSHIKA Ken'ichi (70183225)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
43. KONNO Kazuhiro (10186869)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
44. WADA Masaaki (80192821)

# of Collaborated Projects : 2results

# of Collaborated Products : 2results
45. YAMASHITA Yasushi (70239987)

# of Collaborated Projects : 2results

# of Collaborated Products : 2results
46. AKIYOSHI Hirotaka (80397611)

# of Collaborated Projects : 2results

# of Collaborated Products : 2results
47. SAEKI Osamu (30201510)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
48. TAKAHASHI Masaro (70311107)

# of Collaborated Projects : 2results

# of Collaborated Products : 1results
49. AGAOKA Yoshio (50192894)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
50. SASAKI Takeshi (00022682)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
51. NAKAYAAHIKI Atsushi (10237456)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
52. FUTAKI Akito (90143247)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
53. IRITANI Hiroshi (20448400)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
54. FUJIOKA Atsushi (30293335)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
55. MATSUURA Nozomu (00389339)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
56. NISHINOU Takeo (50420394)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
57. NAKAJIMA Hiraku (00201666)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
58. KAWAKAMI Yu (60532356)

# of Collaborated Projects : 2results

# of Collaborated Products : 4results
59. SAJI Kentaro (70451432)

# of Collaborated Projects : 2results

# of Collaborated Products : 5results
60. TERAO Hiroaki (90119058)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
61. FUJIKI Akira (80027383)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
62. FUJIWARA Akio (30251359)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
63. KOWATA Asutaka (50033931)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
64. KANNO Hiroaki (90211870)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
65. KATO Masahide (90062679)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
66. YOKOYAMA Kazyi (10053711)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
67. 相山玲子 (20222466)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
68. 増田哲也 (70202314)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
69. 竹内勝 (70028116)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
70. 真鍋昭治郎 (20028260)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
71. 高橋智 (70226835)

# of Collaborated Projects : 2results

# of Collaborated Products : 0results
72. YAMAGUCHI Keizo (00113639)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
73. KAMADA Seiichi (60254380)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
74. NAGAI Toshitaka (40112172)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
75. MIYACHI Hideki (40385480)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
76. KOBAYASHI Tsuyoshi (00186751)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
77. MORIMOTO Kanji (90200443)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
78. NAKANISHI Toshihiro (00172354)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
79. KOMORI Yohei (70264794)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
80. TAKAYAMA Haruko (90274430)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
81. KAWAKUBO Satoshi (80360303)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
82. NAKAGAWA Yasuhiro (90250662)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
83. HASEGAWA Keizo (00208480)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
84. YOSHIDA Masaaki (30030787)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
85. OGUISO Keiji (40224133)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
86. YAMAMOTO Ou (20291700)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
87. IRIE Hiroshi (30385489)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
88. WATANABE Takao (30201198)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
89. SAKANE Yusuke (00089872)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
90. YAMASAKI Yohei (00093477)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
91. HONDA Nobuhiro (60311809)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
92. OHTA Hiroshi (50223839)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
93. AWATA Hidetoshi (40314059)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
94. YASUI Yukinori (30191117)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
95. UCHIYAMA Kouichi (20053689)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
96. KANEYUKI Soji (40022553)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
97. UEHARA Taketo (40613261)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
98. NOMURA Takaaki (30135511)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
99. 高橋恒郎 (90015511)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
100. 田崎博之 (30179684)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
101. 中川久雄 (10015018)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
102. 竹内光弘 (00015950)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
103. 森田純 (20166416)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
104. 阿部英一 (30015507)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
105. 平峰豊 (30116173)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
106. 内田素夫 (10221805)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
107. 杉本充 (60196756)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
108. 新田貴士 (20202244)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
109. 小磯深幸 (10178189)

# of Collaborated Projects : 1results

# of Collaborated Products : 1results
110. 小池直之 (00281410)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
111. 斎藤義久 (20294522)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
112. 木村真琴 (30186332)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
113. 石田政司 (50349023)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
114. 小松玄 (60108446)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
115. 高橋雅朋 (80431302)

# of Collaborated Projects : 1results

# of Collaborated Products : 0results
116. HONDA Atsufumi

# of Collaborated Projects : 1results

# of Collaborated Products : 2results
117. MORI Shigefumi

# of Collaborated Projects : 0results

# of Collaborated Products : 1results
118. 安藤直也

# of Collaborated Projects : 0results

# of Collaborated Products : 1results
119. 山田泰彦

# of Collaborated Projects : 0results

# of Collaborated Products : 1results
120. Yang Hongcang

# of Collaborated Projects : 0results

# of Collaborated Products : 1results
121. 本多正平

# of Collaborated Projects : 0results

# of Collaborated Products : 1results

UMEHARA MASAAKI 梅原 雅顕

UMEHARA Masaaki 梅原 雅顕

UMEHARA Masaki 梅原 雅串

梅原 雅顕 ウメハラ マサアキ

Research Projects

Research Products

Co-Researchers

Singularities of surfaces and hypersurfaces in Lorentzian space formsOngoing

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Promotion of the study of curves, surfaces and hypersurfaces with singularities from the view point of differential geometryPrincipal InvestigatorOngoing

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Geometry of curves, surfaces and hypersurfaces with singularitiesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Geometry of curves and surfaces with singularitiesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

UMEHARA MASAAKI 梅原雅顕

UMEHARA Masaaki 梅原雅顕

UMEHARA Masaki 梅原雅串

梅原雅顕ウメハラマサアキ