OKAYASU Takashi 岡安隆

… Alternative Names

岡安隆オカヤスタカシ

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Researcher Number	00191958
Other IDs
Affiliation (based on the past Project Information) *help	2008 – 2011: Ibaraki University, 教育学部, 教授 2007 – 2008: Ibaraki University, College of Education, Associate professor 2002 – 2006: IBARAKI Univ., College of Education, associate professor, 教育学部, 助教授 2000: Ibaraki University, College of Education, Assistant Professor, 教育学部, 助教授 1996 – 1999: 富山大学, 教育学部, 助教授 1994: 富山大学, 教育学部, 助教授 1987: 弘前大学, 理学部, 助手
Review Section/Research Field	Principal Investigator Geometry / Geometry Except Principal Investigator Algebra / Algebra / 代数学・幾何学 / Geometry
Keywords	Principal Investigator normal connection / 極小部分多様体 / Bernstein theorem / 超曲面 / スカラー曲率 / ordinary differential equation / hypersurface / scalar curvature / 平均曲率 / 法曲率 … More / 常微分方程式 / hyperbolic space / equivariant differential geometry / minimal submanifold / 同変微分幾何 / 双曲空間 / 同変微分幾何学 / 法接続 / halfspace theorem / higher order mean curvature / higher codimensional graph / Bennstein Problem / 最大値原理 / half space theorem / 高次平均曲率 / 余次元の高いグラフ / 極小超曲面 / 第二基本形式 / 比較定理 / ユークリッド空間 / Chern-Lashof inequality / Willmore-Saleemi conjecture / total curuature / 全曲率有限 / Weitzenbock公式 / 調和写像 … More Except Principal Investigator BP-理論 / 分類空間 / BP-theory / classifying space / モチビックコホモロジー / motvic cohomology / 代数的コボルディズム / コンプレックスコボルディズム / Pfister quadric / algebraic cobordism / motivic cohomology / generalized cohomology / BP理論 / 一般コホモロジー / Chow ring / Classifying space / Cohomology group / コホモロジー群 / コホモロジー / ブリースコーン多様体 / リーマン空間 / 部分多様体 / 群作用 / 多様体 / 代数的同境界理論 Less

幾何解析を用いたWeingarten超曲面の構成の研究Principal Investigator
- Principal Investigator
  
  岡安隆
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Ibaraki University
algebraic cobordism and motivic cohomology
- Principal Investigator
  
  YAGITA Nobuaki
- Project Period (FY)
  2008 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Ibaraki University
Study on the construction of hypersurfaces with constant scalar curvature by using geometric analysisPrincipal Investigator
- Principal Investigator
  
  OKAYASU Takashi
- Project Period (FY)
  2007 – 2010
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Ibaraki University
motivic cohomology and classifying spaces
- Principal Investigator
  
  YAGITA Nobuaki
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Ibaraki University
generalized cohomology and classifying spases
- Principal Investigator
  
  YAGITA Nobuaki
- Project Period (FY)
  2003 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  Ibaraki University
Study of the structure of hypersurfaces with constant scalar curvaturePrincipal Investigator
- Principal Investigator
  
  OKAYASU Takashi
- Project Period (FY)
  2003 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  IBARAKI UNIVERSITY
The cohomslogy group of the classifying space
- Principal Investigator
  
  YAGITA N
- Project Period (FY)
  2001 – 2002
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Algebra
- Research Institution
  IBARAKI UNIVERSITY
Studies on Bernstein type theorems for minimal submanifoldsPrincipal Investigator
- Principal Investigator
  
  OKAYASU Takashi
- Project Period (FY)
  1999 – 2000
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  IBARAKI UNIVERSITY
  University of Toyama
Geometry of Total Curvature on Negatively Curved ManifoldsPrincipal Investigator
- Principal Investigator
  
  OKAYASU Takashi
- Project Period (FY)
  1997 – 1998
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  Toyama University
空間形の全曲率の幾何学Principal Investigator
- Principal Investigator
  
  岡安隆
- Project Period (FY)
  1996
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Geometry
- Research Institution
  University of Toyama
調和写像の安定性と特異点の研究Principal Investigator
- Principal Investigator
  
  岡安隆
- Project Period (FY)
  1994
- Research Category
  
  Grant-in-Aid for Encouragement of Young Scientists (A)
- Research Field
  
  Geometry
- Research Institution
  University of Toyama
群作用を持つ多様体の構造
- Principal Investigator
  
  高橋敬夫
- Project Period (FY)
  1987
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  代数学・幾何学
- Research Institution
  Hirosaki University

All 2012 2011 2010 2009 2008 2007 2005

All Journal Article Presentation

[Journal Article] Closed hypersurfaces in Riemannian manifolds whose second fundamental forms are of constant length2011
- Author(s)
  岡安隆
- Journal Title
  
  AIP conference proceedings : International workshop on complex structures, integrability and vector fields
  
  Volume: Vol.1340 Pages: 90-96
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19540062
[Journal Article] Closed hypersurfaces in Riemannian manifolds whose second fundamental forms are of constant length2011
- Author(s)
  Takashi Okayasu
- Journal Title
  
  International workshop on complex structures, integrability and vector fields
  
  Volume: 1340 Pages: 90-96
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19540062
[Journal Article] New examples of complete hypersurfaces with constant positive scalar curvature in the Euclidean space2010
- Author(s)
  岡安隆
- Journal Title
  
  J. Math. Soc. Japan
  
  Volume: Vol.62, No.4 Pages: 1137-1166
- NAID
  10027871057
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19540062
[Journal Article] New examples of hyper surface with constant positive scalar curvature in the Euclidean space2010
- Author(s)
  T. Okayasu
- Journal Title
  
  J. Math Soc. Japan
  
  Pages: 1137-1166
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20540061
[Journal Article] On compact hypersurfaces with constant scalar curvature in the Euclidean space2005
- Author(s)
  岡安隆
- Journal Title
  
  Kodai Mathematical Journal (印刷中)
- NAID
  130003574514
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540057
[Journal Article] A Gap Theorem for Complete four-dimensional Manifolds with δW+=02005
- Author(s)
  岡安隆
- Journal Title
  
  Tsukuba Journal of Mathematics (発表予定)
- NAID
  120005349048
- Data Source
  KAKENHI-PROJECT-15540057
[Journal Article] A gap theorem for complete for-dimensional manifolds with ΔW_t=02005
- Author(s)
  T.Okayasu
- Journal Title
  
  Tsukuba J.Math. 29
  
  Pages: 539-542
- Data Source
  KAKENHI-PROJECT-17540007
[Journal Article] A Gap Theorem for Complete four-dimensional Manifolds with δW+=02005
- Author(s)
  岡安隆
- Journal Title
  
  Tsukuba Journal of Mathematics (印刷中)
- NAID
  120005349048
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-15540057
[Journal Article] On compact hypersurfaces with constant scalar curvature in the Euclidean space2005
- Author(s)
  岡安隆
- Journal Title
  
  Kodai Mathematical Journal (発表予定)
- NAID
  130003574514
- Data Source
  KAKENHI-PROJECT-15540057
[Journal Article] On compact hypersurfaces with constant scalar curvature in the Euclidean space2005
- Author(s)
  Takashi Okayasu
- Journal Title
  
  Kodai Math.J. (in press)
- NAID
  130003574514
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-15540057
[Journal Article] A Gap Theorem for Complete four-dimensional Manifolds with δW+=02005
- Author(s)
  Takashi Okayasu
- Journal Title
  
  Tsukuba J.Math. (in press)
- NAID
  120005349048
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-15540057
[Presentation] On the construction of complete minimal hypersurfaces in the Euclidean space2012
- Author(s)
  岡安隆
- Organizer
  Conference on Pure and Applied Differential Geometry
- Place of Presentation
  KU Leuven, Belgium
- Year and Date
  2012-08-30
- Data Source
  KAKENHI-PROJECT-23540069
[Presentation] ユークリッド空間の完備極小部分多様体の構成についての2つの結果2011
- Author(s)
  岡安隆
- 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
  2011-06-29
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] Comparison theorems for ODEs and their application to geometry of Weingarten hypersurfaces2011
- Author(s)
  岡安隆
- Organizer
  The International Conference of Differential Geometry and Tanaka Theory
- Place of Presentation
  京都大学数理解析研究所
- Year and Date
  2011-01-25
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] 極小部分多様体の構成法について2011
- Author(s)
  岡安　隆
- Organizer
  部分多様体論・湯沢２０１１(招待講演)
- Place of Presentation
  湯沢グランドホテル
- Data Source
  KAKENHI-PROJECT-23540069
[Presentation] Comparison theorems for ODEs and their application to geometry of Weingarten hypersurfaces2011
- Author(s)
  岡安隆
- Organizer
  The International Conference of Differential Geometry and Tanaka Theory
- Place of Presentation
  京都大学数理解析研究所(招待講演)
- Year and Date
  2011-01-25
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] ユークリッド空間の完備極小部分多様体の構成についての2つの結果2011
- Author(s)
  岡安隆
- 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
- Year and Date
  2011-06-29
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] ユークリッド空間の完備極小部分多様体の構成について2011
- Author(s)
  岡安　隆
- Organizer
  日本数学会２０１１年度秋季総合分科会
- Place of Presentation
  信州大学
- Data Source
  KAKENHI-PROJECT-23540069
[Presentation] A comparison theorem for an ODE and its application to geometry of Weingarten hypersurfaces2010
- Author(s)
  岡安隆
- Organizer
  10th International Workshop Complex structures, integrability and vector fields
- Place of Presentation
  ブルガリア科学アカデミー(ブルガリア)
- Year and Date
  2010-09-15
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] Riemann 多様体での第二基本形式の長さが一定な超曲面の存在について2009
- Author(s)
  岡安隆
- Organizer
  日本数学会秋季総合分科会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] Riemann多様体における第二基本形式の長さが一定な閉超曲面の存在について2009
- Author(s)
  岡安隆
- Organizer
  日本数学会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] Riemann多様体での第二基本形式の長さが一定な超曲面の存在について2009
- Author(s)
  岡安隆
- Organizer
  日本数学会秋季総合分科会
- Place of Presentation
  大阪大学
- Year and Date
  2009-09-24
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] Riemann 多様体における第二基本形式の長さ一定な超曲面の存在について2008
- Author(s)
  岡安隆
- Organizer
  新潟微分幾何学研究集会
- Place of Presentation
  新潟大学
- Year and Date
  2008-11-06
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] Riemann多様体における第二基本形式の長さ一定な超曲面の存在について2008
- Author(s)
  岡安隆
- Organizer
  新潟微分幾何学研究集会
- Place of Presentation
  新潟大学
- Year and Date
  2008-11-06
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] A construction of complete hypersurfaces with constant scalar curvature in the Euclidean space2008
- Author(s)
  岡安隆
- Organizer
  The ninth Pacific Rim Geometry Conference (第9回環太平洋幾何学研究集会)
- Place of Presentation
  国立台湾大学
- Year and Date
  2008-12-01
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] A construction of complete hypersurfaces with constant scalar curvature in the Euclidean space2008
- Author(s)
  岡安隆
- Organizer
  The Ninth Pacific Rim Geometry Conference
- Place of Presentation
  National Taiwan University, Taipei, Taiwan
- Year and Date
  2008-12-10
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] A construction of complete hypersurfaces with constant scalar curvature in the Euclidean space2008
- Author(s)
  岡安隆
- Organizer
  The ninth Pacific Rim Geometry Conference(第9回環太平洋幾何学研究集会)
- Place of Presentation
  国立台湾大学、台湾
- Year and Date
  2008-12-10
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] A construction of complete hypersurfaces with constant scalar curvature2007
- Author(s)
  岡安隆
- Organizer
  10th International Conference on Differential Geometry and Its Applications
- Place of Presentation
  Palacky University,チェコ
- Year and Date
  2007-08-31
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] A construction of complete hypersurfaces with constant scalar curvature2007
- Author(s)
  岡安隆
- Organizer
  10th International Conference on Differential Geometry and Its Applications
- Place of Presentation
  Palacky University
- Year and Date
  2007-08-31
- Data Source
  KAKENHI-PROJECT-19540062
[Presentation] A construction of complete hypersurfaces with constant scalar curvature2007
- Author(s)
  Takashi Okayasu
- Organizer
  10th International Conference on Differential Geometry and Its Applications
- Place of Presentation
  Palacky University, Olomouc, Czech Republic
- Year and Date
  2007-08-31
- Data Source
  KAKENHI-PROJECT-19540062

1. YAGITA Nobuaki (20130768)

# of Collaborated Projects: 7 results

# of Collaborated Products: 0 results
2. KUDOU Kenji (00114017)

# of Collaborated Projects: 4 results

# of Collaborated Products: 0 results
3. KANEDA M (60204575)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
4. TEZUKA M (20197784)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
5. 笹尾靖也 (10016024)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
6. 古田高士 (40215273)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 高橋敬夫 (70003324)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 倉坪茂彦 (50003512)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 高橋宏一 (90000182)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 古田孝之 (40007612)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. 畠山洋二 (70003308)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

OKAYASU Takashi 岡安 隆

岡安 隆 オカヤス タカシ

Research Projects

Research Products

Co-Researchers

幾何解析を用いたWeingarten超曲面の構成の研究Principal Investigator

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algebraic cobordism and motivic cohomology

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Study on the construction of hypersurfaces with constant scalar curvature by using geometric analysisPrincipal Investigator

Principal Investigator

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motivic cohomology and classifying spaces

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generalized cohomology and classifying spases

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Study of the structure of hypersurfaces with constant scalar curvaturePrincipal Investigator

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The cohomslogy group of the classifying space

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Studies on Bernstein type theorems for minimal submanifoldsPrincipal Investigator

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Geometry of Total Curvature on Negatively Curved ManifoldsPrincipal Investigator

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空間形の全曲率の幾何学Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

調和写像の安定性と特異点の研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

群作用を持つ多様体の構造

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Closed hypersurfaces in Riemannian manifolds whose second fundamental forms are of constant length2011

Author(s)

Journal Title

OKAYASU Takashi 岡安隆

岡安隆オカヤスタカシ