HATA Masayoshi 畑政義

… Alternative Names

Researcher Number	40156336
Other IDs
Affiliation (based on the past Project Information) *help	2007 – 2009: Kyoto University, 大学院・理学研究科, 准教授 2006: 京都大学, 大学院理学研究科, 助教授 2003 – 2005: Kyoto Univ., GraduateSchool of Science, Ass.Prof., 大学院・理学研究科, 助教授 1992 – 2002: 京都大学, 総合人間学部, 助教授 1992: Kyoto Univ.,Integrated Human Studies,Assistant Professor, 助教授 1991: 京都大学, 教養部, 助教授 1988: 京都大学, 理学部, 助手
Review Section/Research Field	Principal Investigator 解析学 / Basic analysis / Basic analysis Except Principal Investigator 解析学 / Algebra / General mathematics (including Probability theory/Statistical mathematics) / Basic analysis / 代数学・幾何学
Keywords	Principal Investigator 超越数 / 無理数度 / パデ近似 / Pade approximation / マーラー関数 / 有理近似 / 小数部分 / Pisot数 / Salem数 / 無理数 … More Except Principal Investigator 準楕円性 / セルオートマトン / 準楕円型作用素 / 算術幾何平均 / 平衡分布 / オイラー流 / ディオファンタス近似 / Wick calculus / 局所可解性 / 楕円曲面 / 二重対数関数 / 自己相似関数 / 電気回路網 / カオス / Lagrange plane / 局所環、 / Cohen-Macaulay加群 / Gorenstein環. / 有限次元多元環の表現論 / ホモロジー代数. / 特異点 / matched asymptotics / 非線形固有値問題 / Borel総和法 / beyond all orders / 微分不可能関数 / 接続問題 / 多次元Schrodinger作用素 / 4次元多様体 / グルサ-問題 / 非2次無理数度 / 複素算術幾何平均 / 漸近展開 / 非線形可積分系 / 非線形波動 / 非線形力学系 / 確率過程 / フラクタル / 滞在時間 / 自己相似過程 / 非線形現象 / DUFFING EQUATION / PERIODIC SOLUTIONS / COMPUTER PROOF / INTERVAL ANALYSIS / VISCONS GAS / PISTON PROB. / グラスマン多様体 / 不変微分作用素 / ケーラー多様体 / アインシュタイン・ケーラー計量 / ドルボー補題 / ケ-ラ-多様体 / ハイバ-ケ-ラ-空間 / モジュライ / ラドン変換 / Grassmann manifold / invriant differential operator / Kahler manifold / Einstein-Kahler metric / Dolbeault lemma / Diophantine approximation / Egorov型 / 平滑化効果 / ホイヘンス原理 / Gevrey指数 / Ruelle作用素 / スペクトル / 鞍部点法 / 準惰性円 / 擬微分作用素 / Gevrey class / Wick calculus. / Navies-Stokes / 再生関数 / 不動点 / ガウス算術平均 / 退化楕円型 / Banach scale / 吸引領域 / サドル法 / 自己相似 / 固有値 / Hypoellipticity / Egorov type / smoothing effect / Huyghens principle / Gevrey order / Ruelle operator / spectre / saddle method / 可積分系 / Whitham変形 / 等モノドロミー変形 / 超対称ゲージ理論 / 位相的ゲージ理論 / 可解スピン系 / 共系場理論 / 戸田格子 / 共形場理論 / モノドロミー保存変形 / 有限次元可積分系 / 超対称性 / ゲージ理論 / 位相不変量 / 表現論 / 複素力学系 / integrable system / Whitham deformation / isomonodromic deformation / supersymmetric field theory / topological field theory / solvable spin system / conformal field theory / Toda lattice / 半単純リー群 / ユニタリ表現 / 随伴多様体 / 随伴サイクル / 巾零軌道 / テータ対応 / 幾何学的不変式論 / 半単純群の表現論 / reductive dual pair / 概均質ベクトル空間 / 球等質空間 / semisimple Lie group / unitary representation / associated variety / associated cycle / nilpotent orbit / theta correspondence / geometric invariant theory / 無限次退化 / 超局所解析 / 対数型Sobolev不等式 / 半線形Diriclet問題 / Fefferman-Phong不等式 / Schrodinger方程式 / 退化Monge-Ampere方程式 / 対数型ソボレフ不等式 / 最大値原理 / Schodinger方程式 / key wards / Wick作用素 / 楕円型方程式 / 双極性 / 対数型 / sololev不等式 / 半線型楕円型方程式 / schodinger方程式 / 強一意性定理 / 双曲型方程式 / infinitely degenerate / microlocal analysis / Sobolev inequality of logarithmic type / semiliner Dirichlet problem / Fefferman-Phong inegality / Schrodinger equation / hypaellipticity Less

Analytic Study for Pisot and Salem numbersPrincipal Investigator
- Principal Investigator
  
  HATA Masayoshi
- Project Period (FY)
  2006 – 2009
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Basic analysis
- Research Institution
  Kyoto University
Research for rational approximation to transcendental numbersPrincipal Investigator
- Principal Investigator
  
  HARA Masayoshi
- Project Period (FY)
  2004 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Basic analysis
- Research Institution
  KYOTO UNIVERSITY
Analytical research for transcendental numbersPrincipal Investigator
- Principal Investigator
  
  HATA Masayoshi
- Project Period (FY)
  2000 – 2003
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Basic analysis
- Research Institution
  Kyoto University
the positivity of degenerate elliptic operators and the microlocal analysis on solutions for partial differentiai equations
- Principal Investigator
  
  MORIMOTO Yoshinori
- Project Period (FY)
  2000 – 2003
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Basic analysis
- Research Institution
  KYOTO UN IVERSITY
Theta correspondence and associated cycles
- Principal Investigator
  
  NISHIYAMA Kyo
- Project Period (FY)
  1999 – 2000
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  KYOTO UNIVERSITY
Finite dimensional integrable structure in systems with infinite degree of freedom
- Principal Investigator
  
  TAKASAKI Kanehisa
- Project Period (FY)
  1998 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Basic analysis
- Research Institution
  KYOTO UNIVERSITY
フラクタル理論と超越数論の組織的研究Principal Investigator
- Principal Investigator
  
  畑政義
- Project Period (FY)
  1997 – 1998
- Research Category
  
  Grant-in-Aid for Exploratory Research
- Research Field
  
  解析学
- Research Institution
  Kyoto University
Pade type approximation and its application to the number theoryPrincipal Investigator
- Principal Investigator
  
  HATA Masayoshi
- Project Period (FY)
  1997 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  解析学
- Research Institution
  KYOTO UNIVERSITY
Microlocal analysis for operators with infinite degeneracy
- Principal Investigator
  
  MORIMOTO Yoshinori
- Project Period (FY)
  1996 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  解析学
- Research Institution
  KYOTO UNIVERSITY
可換環論とその表現の研究
- Principal Investigator
  
  西和田公正
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Kyoto University
有理近似および超越数の研究Principal Investigator
- Principal Investigator
  
  畑政義
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  解析学
- Research Institution
  Kyoto University
漸近解析的方法による非線形問題の研究
- Principal Investigator
  
  高崎金久
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  解析学
- Research Institution
  Kyoto University
現象解析の数理的研究
- Principal Investigator
  
  河野敬雄
- Project Period (FY)
  1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Kyoto University
可換環の表現とホモロジー代数の研究
- Principal Investigator
  
  吉野雄二
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Kyoto University
数理科学の諸分野に現れる漸近解析的問題の研究
- Principal Investigator
  
  TAKASAKI Kanehisa
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  解析学
- Research Institution
  Kyoto University
自然現象の数学解析的総合研究
- Principal Investigator
  
  河野敬雄
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  General mathematics (including Probability theory/Statistical mathematics)
- Research Institution
  Kyoto University
超越数の研究Principal Investigator
- Principal Investigator
  
  畑政義
- Project Period (FY)
  1993
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  解析学
- Research Institution
  Kyoto University
擬微分作用素の正値性と微分方程式の解の超局所解析
- Principal Investigator
  
  森本芳則
- Project Period (FY)
  1993
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  解析学
- Research Institution
  Kyoto University
Study on global structures of manifolds.
- Principal Investigator
  
  IMANISHI Hideki
- Project Period (FY)
  1991 – 1992
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  代数学・幾何学
- Research Institution
  KYOTO UNIVERSITY
数理物理学に現れる偏微分方程式の解の研究
- Principal Investigator
  
  西田孝明
- Project Period (FY)
  1988
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  解析学
- Research Institution
  Kyoto University

All 2010 2009 2007 2005

All Journal Article Presentation Book

[Book] World Scientific2007
- Author(s)
  Masayoshi Hata
- Total Pages
  302
- Publisher
  Problems and Solutions in Real Analysis
- Data Source
  KAKENHI-PROJECT-18540172
[Book] PROBLEMS AND SOLUTIONS IN REAL ANALYSIS, Series on Number Theory and Its Applications2007
- Author(s)
  Masayoshi Hata
- Total Pages
  292
- Publisher
  World Scientific
- Data Source
  KAKENHI-PROJECT-18540172
[Book] Problems and Solutions in Real Analysis (Series on Number Theory and its Applications, Vol.4)2007
- Author(s)
  Masayoshi Hata
- Total Pages
  304
- Publisher
  World Scientific Publishing
- Data Source
  KAKENHI-PROJECT-18540172
[Journal Article] A lower estimate for ||e^n||2010
- Author(s)
  Masayoshi Hata
- Journal Title
  
  Journal of Number Theory (掲載確定)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18540172
[Journal Article] A lower estimate for ||e^n||2010
- Author(s)
  Masayoshi Hata
- Journal Title
  
  Journal of Number Theory 130
  
  Pages: 1685-1704
- Data Source
  KAKENHI-PROJECT-18540172
[Journal Article] Note on the fractional parts of λ θ ^n2005
- Author(s)
  Masayoshi Hata
- Journal Title
  
  Acta Arithmetica 120・2
  
  Pages: 153-157
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16540149
[Journal Article] Note on the fractional part of λ θ^n2005
- Author(s)
  Masayoshi Hata
- Journal Title
  
  Acta Arithmetica 120・2
  
  Pages: 153-157
- Data Source
  KAKENHI-PROJECT-16540149
[Journal Article] Note on the fractional parts of λθ^n2005
- Author(s)
  M.Hata
- Journal Title
  
  Acta Aritlimetica 120,no.2
  
  Pages: 153-157
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-16540149
[Presentation] A lower estimate for ||e^n||2009
- Author(s)
  畑政義
- Organizer
  Diophantine Analysis and Related Fields 2009
- Place of Presentation
  日本大学理工学部
- Data Source
  KAKENHI-PROJECT-18540172
[Presentation] Diophantine Analysis and Related Fields 20092009
- Author(s)
  畑政義
- Place of Presentation
  日本大学理工学部
- Data Source
  KAKENHI-PROJECT-18540172
[Presentation] On the lower bound for ||e^n||2009
- Author(s)
  畑政義
- Organizer
  Diophantine Analysis and Related Fields 2009
- Place of Presentation
  日本大学理工学部
- Year and Date
  2009-03-03
- Data Source
  KAKENHI-PROJECT-18540172

1. KONO Norio (90028134)

# of Collaborated Projects: 9 results

# of Collaborated Products: 0 results
2. MORIMOTO Yoshinori (30115646)

# of Collaborated Projects: 8 results

# of Collaborated Products: 0 results
3. ASANO Kiyoshi (90026774)

# of Collaborated Projects: 8 results

# of Collaborated Products: 0 results
4. USHIKI Shigehiro (10093197)

# of Collaborated Projects: 7 results

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5. NISHIWADA Kimimasa (60093291)

# of Collaborated Projects: 5 results

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6. TAKASAKI Kanehisa (40171433)

# of Collaborated Projects: 5 results

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7. SAKURAGAWA Takashi (60196136)

# of Collaborated Projects: 5 results

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8. TAKEUCHI Akira (40026761)

# of Collaborated Projects: 4 results

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9. UEDA Tetsuo (10127053)

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10. SAITO Hiroshi (20025464)

# of Collaborated Projects: 3 results

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11. UE Masaaki (80134443)

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12. IMANISHI Hideki (90025411)

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13. 宮本宗実 (00026775)

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14. YAMAUCHI Masatoshi (30022651)

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15. KIGAMI Jun (90202035)

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16. NAGATA Makoto (30293971)

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17. 秋葉知温 (60027670)

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18. GYOJO Akihiko (50116026)

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19. 日置尋久 (70293842)

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20. NISHIYAMA Kyo (70183085)

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21. MATSUKI Toshihiko (20157283)

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22. KATO Shinichi (90114438)

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23. 吉野雄二 (00135302)

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24. 笠原晧司 (70026748)

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25. 西田孝明 (70026110)

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26. 岩塚明 (40184890)

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27. 松本和一郎 (40093314)

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28. 池部晃生 (00025280)

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30. FUJIKI Akira (80027383)

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31. TANDAI Kouichi (90026732)

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32. 岩井斉良 (70026764)

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33. AMOU Masaki (60201901)

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34. KATSURADA Masanori (90224485)

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35. TARAMA Shigeo (90115882)

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36. UEKI Naomasa (80211069)

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37. ANDO Hiroshi (60292471)

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38. MORIOKA Tatsushi (80239631)

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39. 浅倉史興 (20140238)

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HATA Masayoshi 畑 政義

畑 正義 ハタ マサヨシ

畑 政義

Research Projects

Research Products

Co-Researchers

Analytic Study for Pisot and Salem numbersPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Research for rational approximation to transcendental numbersPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Analytical research for transcendental numbersPrincipal 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

フラクタル理論と超越数論の組織的研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Pade type approximation and its application to the number theoryPrincipal 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

有理近似および超越数の研究Principal 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

HATA Masayoshi 畑政義

畑正義ハタマサヨシ

畑政義