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A study on global properties of immersed surfaces in space forms from the viewpoint of their Gauss maps

Research Project

Project/Area Number 21740053
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Geometry
Research InstitutionYamaguchi University (2011)
Kyushu University (2009-2010)

Principal Investigator

KAWAKAMI Yu  山口大学, 大学院・理工学研究科, 講師 (60532356)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsガウス写像 / 値分布 / 波面 / 除外値 / 完備性 / ベルンシュタイン型定理 / 幾何学 / 函数論 / 値分布論 / 島 / 波面(フロント) / 平坦曲面 / 双曲計量 / 非固有アファイン球面 / 平均曲率一定曲面 / 双曲的ガウス写像 / 完全分岐値数
Research Abstract

We investigated value-distribution-theoretic properties of Gauss maps for several classes of immersed surfaces in space forms. In particular, we can obtain the precise maximum for the number of exceptional values of Gauss maps for weakly complete flat fronts in the hyperbolic 3-space and improper affine fronts in the affine 3-space. As an application of this result, a new simple proof of Bernstein type theorems for these classes was provided.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (57 results)

All 2012 2011 2010 2009 Other

All Journal Article (12 results) (of which Peer Reviewed: 10 results) Presentation (43 results) Book (2 results)

  • [Journal Article] Value distribution of the Gauss map of improper affine spheres2012

    • Author(s)
      Yu Kawakami, Daisuke Nakajo.
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: Vol.63、No.3 Pages: 799-821

    • NAID

      10031177250

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Value distribution of the hyperbolic Gauss maps for flat fronts in hyperbolic three-space2012

    • Author(s)
      Yu Kawakami.
    • Journal Title

      Houston Journal of Mathematics

      Volume: Vol.38、No.1 Pages: 115-130

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Value distribution of the hyperbolic Gauss maps for flat fronts in hyperbolic three-space2012

    • Author(s)
      Yu Kawakami
    • Journal Title

      Houston Journal of Mathematics

      Volume: 38 Pages: 115-130

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] CMC-1 trinoids in hyperbolic 3-space and metrics of constant mean curvature one with canonical singularities on the 2-sphere2011

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

      Proceedings of the Japan Academy Ser. A

      Volume: Vol.87、No.8 Pages: 144-149

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] CMC-1 trinoids in H^3 and metrics of constant curvature one…2011

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

      Proceedings of Japan Academy, Ser.A.

      Volume: 87 Issue: 8 Pages: 144-149

    • DOI

      10.3792/pjaa.87.144

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The value distribution of the Gauss map of improper affine fronts2010

    • Author(s)
      Yu Kawakami.
    • Journal Title

      Mathematisches Forschungstitu Oberwolfach Report

      Volume: Vol.21 Pages: 1310-1310

    • Related Report
      2011 Final Research Report
  • [Journal Article] The value distribution of the Gauss map of improper affine fronts2010

    • Author(s)
      Yu Kawakami
    • Journal Title

      Mathematisches Forschungsinstitut Oberwolfach Report

      Volume: 21 Pages: 1310-1310

    • Related Report
      2010 Annual Research Report
  • [Journal Article] Recent progress of the value distribution of the hyperbolic Gauss map2010

    • Author(s)
      Yu Kawakami
    • Journal Title

      Proceedings of the 16^<th> Osaka City University International Academic Symposium 2008 (in press)

    • NAID

      120006654504

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent progress of the value distribution of the hyperbolic Gauss map、Proceedings of the 16^<th> Osaka City University International Academic2009

    • Author(s)
      Yu Kawakami.
    • Journal Title

      Symposium 2008

      Pages: 163-169

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Ramification estimates for the hyperbolic Gauss map2009

    • Author(s)
      Yu Kawakami.
    • Journal Title

      Osaka Journal of Mathematics

      Volume: Vol.46No.4 Pages: 1059-1076

    • NAID

      120005986640

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Ramification estimates for the hyperbolic Gauss map2009

    • Author(s)
      Yu Kawakami
    • Journal Title

      Osaka Journal of Mathematics 46

      Pages: 1059-1076

    • NAID

      120005986640

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Value distribution of the hyperbolic Gauss maps for flat fronts in hyperbolic three-space

    • Author(s)
      Yu Kawakami
    • Journal Title

      Houston Journal of Mathematics ((未定)(掲載決定))

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 曲面のガウス写像の除外値数の上限の幾何学的意味について2012

    • Author(s)
      川上裕
    • Organizer
      012年度日本数学会年会函数論分科会一般講演
    • Place of Presentation
      東京理科大学(東京)函数論分科会一般講演
    • Year and Date
      2012-03-26
    • Related Report
      2011 Final Research Report
  • [Presentation] 曲面のガウス写像の除外値数の上限の幾何学的意味について2012

    • Author(s)
      川上裕
    • Organizer
      2012年度日本数学会函数論分科会一般講演
    • Place of Presentation
      東京理科大学(東京)
    • Year and Date
      2012-03-26
    • Related Report
      2011 Annual Research Report
  • [Presentation] 曲面のガウス写像の除外値数の上限の幾何学的意味について2012

    • Author(s)
      川上裕
    • Organizer
      曲面論小研究集会
    • Place of Presentation
      東京工業大学(東京)
    • Year and Date
      2012-03-20
    • Related Report
      2011 Annual Research Report
  • [Presentation] 代数的議論によるリーマン面上の有理型関数の値分布論2012

    • Author(s)
      川上裕
    • Organizer
      淡路島幾何学研究集会2012
    • Place of Presentation
      国民宿舎慶野松原荘(南あわじ市)
    • Year and Date
      2012-01-27
    • Related Report
      2011 Annual Research Report
  • [Presentation] A ramification theorem for the ratio of canonical forms of flat surfaces in hyperbolic three-space2012

    • Author(s)
      川上裕
    • Organizer
      複素解析幾何セミナー
    • Place of Presentation
      東京大学(東京)
    • Year and Date
      2012-01-16
    • Related Report
      2011 Annual Research Report
  • [Presentation] A ramification theorem for the ratio of canonical forms of flat surfaces in hyperbolic three space2011

    • Author(s)
      Yu Kawakami
    • Organizer
      The 10^<th> Pacific Rim Geometry Conference 2011 Osaka-Fukuoka PartII
    • Place of Presentation
      九州大学西新プラザ(福岡市)
    • Year and Date
      2011-12-08
    • Related Report
      2011 Final Research Report
  • [Presentation] A ramification theorem for the ratio of canonical forms of flat surfaces in hyperbolic three-space2011

    • Author(s)
      Yu Kawakami
    • Organizer
      The 10th Pacific Rim Geometry Conference 2011 Osaka-Fukuoka Part II
    • Place of Presentation
      九州大学西新プラザ(福岡市)
    • Year and Date
      2011-12-08
    • Related Report
      2011 Annual Research Report
  • [Presentation] 波面のGauss写像の値分布とBernstein型定理への応用について2011

    • Author(s)
      川上裕
    • Organizer
      研究集会:「多様体上の微分方程式」
    • Place of Presentation
      金沢大学(金沢市)
    • Year and Date
      2011-11-12
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 極小曲面論と函数論との関係について2011

    • Author(s)
      川上裕
    • Organizer
      第46回函数論サマーセミナー
    • Place of Presentation
      かんぽの宿別府(別府市)
    • Year and Date
      2011-09-13
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] 波面におけるガウス写像の値分布とその応用2011

    • Author(s)
      川上裕
    • Organizer
      第58回幾何学シンポジウム
    • Place of Presentation
      山口大学(山口市)
    • Year and Date
      2011-08-29
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] The value distribution of the Gauss map of improper affine spheres(Poster)2011

    • Author(s)
      Yu Kawakami
    • Organizer
      Progress in Surface theory
    • Place of Presentation
      オーバーウォルバッハ数学研究所(ドイツ)
    • Year and Date
      2011-05-07
    • Related Report
      2011 Final Research Report
  • [Presentation] Value distribution of the Gauss map of improper affine fronts2011

    • Author(s)
      Yu Kawakami
    • Organizer
      Spanish-Japanese Workshop on Differential Geometry
    • Place of Presentation
      グラナダ大学(スペイン)
    • Year and Date
      2011-02-16
    • Related Report
      2011 Final Research Report
  • [Presentation] Value distribution of the Gauss map of improper affine fronts2011

    • Author(s)
      Yu Kawakami
    • Organizer
      Spanish-Japanese Workshop on Differential Geometry
    • Place of Presentation
      スペイン・グラナダ大学
    • Year and Date
      2011-02-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] Value distribution of the Gauss map of improper affine fronts and affine Bernstein problem2011

    • Author(s)
      Yu Kawakami
    • Organizer
      国際研究集会Differential Geometry and Tanaka Theory
    • Place of Presentation
      京都大学数理解析研究所(京都市)
    • Year and Date
      2011-01-26
    • Related Report
      2011 Final Research Report
  • [Presentation] Value distribution of the Gauss map of improper affine fronts and affine Bernstein problem2011

    • Author(s)
      Yu Kawakami
    • Organizer
      国際研究集会「Differential Geometry and Tanaka theory」
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2011-01-26
    • Related Report
      2010 Annual Research Report
  • [Presentation] Value distribution of the Gauss map of wave fronts and its application2011

    • Author(s)
      Yu Kawakami
    • Organizer
      The Third International Workshop on Differential Geometry
    • Place of Presentation
      佐賀大学(佐賀市)
    • Year and Date
      2011-01-18
    • Related Report
      2011 Final Research Report
  • [Presentation] Value distribution of the Gauss map of wave fronts and its application2011

    • Author(s)
      Yu Kawakami
    • Organizer
      The Third International Workshop on Differential Geometry
    • Place of Presentation
      佐賀大学
    • Year and Date
      2011-01-18
    • Related Report
      2010 Annual Research Report
  • [Presentation] Value distribution of the Gauss map of fronts and its application2011

    • Author(s)
      川上裕
    • Organizer
      リーマン面・不連続群論研究集会
    • Place of Presentation
      大阪国際交流センター(大阪市)
    • Year and Date
      2011-01-09
    • Related Report
      2011 Final Research Report
  • [Presentation] Value distribution of the Gauss map of fronts and its application2011

    • Author(s)
      川上裕
    • Organizer
      リーマン面・不連続群論研究集会
    • Place of Presentation
      大阪国際交流センター
    • Year and Date
      2011-01-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] 非固有アファイン波面のガウス写像の値分布2010

    • Author(s)
      川上裕
    • Organizer
      研究集会擬リーマン幾何学の展開III
    • Place of Presentation
      お茶の水女子大学(東京)
    • Year and Date
      2010-12-19
    • Related Report
      2011 Final Research Report
  • [Presentation] 非固有アファイン波面のガウス写像の値分布2010

    • Author(s)
      川上裕
    • Organizer
      研究集会「擬リーマン幾何学の展開III」
    • Place of Presentation
      お茶の水女子大学
    • Year and Date
      2010-12-19
    • Related Report
      2010 Annual Research Report
  • [Presentation] A curvature estimate for improper affine fronts2010

    • Author(s)
      川上裕
    • Organizer
      Geometry and something 2010
    • Place of Presentation
      福岡大学セミナーハウス
    • Year and Date
      2010-10-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] 非固有アファイン波面のGauss写像の除外値数について2010

    • Author(s)
      川上裕、中條大介
    • Organizer
      2010年度日本数学会秋季総合分科会幾何学分科会
    • Place of Presentation
      名古屋大学(名古屋市)
    • Year and Date
      2010-09-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 非固有アファイン波面のGauss写像の除外値数について2010

    • Author(s)
      川上裕・中條大介
    • Organizer
      2010年度日本数学会秋季総合分科会幾何学分科会
    • Place of Presentation
      大阪大学
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] 非固有アファイン球面のGauss写像の値分布について2010

    • Author(s)
      川上裕、中條大介
    • Organizer
      2010年度日本数学会秋季総合分科会函数論分科会
    • Place of Presentation
      名古屋大学(名古屋市)
    • Year and Date
      2010-09-22
    • Related Report
      2011 Final Research Report
  • [Presentation] 非固有アファイン球面のGauss写像の値分布について2010

    • Author(s)
      川上裕・中條大介
    • Organizer
      2010年度日本数学会秋季総合分科会函数論分科会
    • Place of Presentation
      大阪大学
    • Year and Date
      2010-09-22
    • Related Report
      2010 Annual Research Report
  • [Presentation] 非固有アファイン波面のガウス写像の除外値問題について2010

    • Author(s)
      川上裕
    • Organizer
      第57回幾何学シンポジウム
    • Place of Presentation
      神戸大学(神戸市)
    • Year and Date
      2010-08-07
    • Related Report
      2011 Final Research Report
  • [Presentation] 非固有アファイン波面のガウス写像の除外値問題について2010

    • Author(s)
      川上裕
    • Organizer
      第57回幾何学シンポジウム
    • Place of Presentation
      神戸大学
    • Year and Date
      2010-08-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] The value distribution of the Gauss map of improper affine spheres2010

    • Author(s)
      Yu Kawakami
    • Organizer
      Progress in Surface Theory, Mathematisches Forschungsinstitut Oberwolfach
    • Place of Presentation
      ドイツ・オーバーウォルバッハ数学研究所(Poster)
    • Year and Date
      2010-05-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] ガウス写像の値分布の波面の幾何への応用について2010

    • Author(s)
      川上裕
    • Organizer
      大阪市立大学微分幾何セミナー特別レクチャー
    • Place of Presentation
      大阪市立大学
    • Related Report
      2009 Annual Research Report
  • [Presentation] ガウス写像の値分布から導かれる曲面の大域的性質について2009

    • Author(s)
      川上裕
    • Organizer
      金沢大学数理学談話会
    • Place of Presentation
      金沢大学(金沢市)
    • Year and Date
      2009-12-16
    • Related Report
      2011 Final Research Report
  • [Presentation] ガウス写像の値分布から導かれる曲面の大域的性質について2009

    • Author(s)
      川上裕
    • Organizer
      金沢大学数理学談話会
    • Place of Presentation
      金沢大学
    • Year and Date
      2009-12-16
    • Related Report
      2009 Annual Research Report
  • [Presentation] 曲面のガウス写像の分岐評価について2009

    • Author(s)
      川上裕
    • Organizer
      研究集会部分多様体論・湯沢2009
    • Place of Presentation
      湯沢グランドホテル(湯沢町)
    • Year and Date
      2009-11-27
    • Related Report
      2011 Final Research Report
  • [Presentation] 曲面のガウス写像の分岐評価について2009

    • Author(s)
      川上裕
    • Organizer
      研究集会「部分多様体論・湯沢2009」
    • Place of Presentation
      新潟県湯沢町 湯沢グランドホテル
    • Year and Date
      2009-11-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] The hyperbolic Gauss maps of flat fronts in hyperbolic three space2009

    • Author(s)
      Yu Kawakami
    • Organizer
      研究集会Holomorphic Mappings and Related Diophantine Approximation
    • Place of Presentation
      東京大学・玉原国際セミナーハウス(沼田市)
    • Year and Date
      2009-10-09
    • Related Report
      2011 Final Research Report
  • [Presentation] The hyperbolic Gauss maps of flat fronts in hyperbolic three-space2009

    • Author(s)
      Yu Kawakami
    • Organizer
      研究集会「Holomorphic Mappings and Related Diophantine Approximation」
    • Place of Presentation
      東京大学・玉原国際セミナーハウス
    • Year and Date
      2009-10-09
    • Related Report
      2009 Annual Research Report
  • [Presentation] 平坦フロントの双曲的ガウス写像の分岐評価2009

    • Author(s)
      川上裕
    • Organizer
      2009年日本数学会秋季総合分科会幾何学分科会
    • Place of Presentation
      大阪大学(大阪市)
    • Year and Date
      2009-09-24
    • Related Report
      2011 Final Research Report
  • [Presentation] 平坦フロントの双曲的ガウス写像の分岐評価2009

    • Author(s)
      川上裕
    • Organizer
      2009年度日本数学会秋季総合分科会幾何学分科会
    • Place of Presentation
      大阪大学
    • Year and Date
      2009-09-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] 複素解析的手法による曲面の大域的性質について2009

    • Author(s)
      川上裕
    • Organizer
      第44回函数論サマーセミナー
    • Place of Presentation
      神奈川県箱根町 四季の湯強羅静雲荘
    • Year and Date
      2009-08-19
    • Related Report
      2009 Annual Research Report
  • [Presentation] On the upper bound of the number of exceptional values of the hyperbolic Gauss map2009

    • Author(s)
      Yu Kawakami
    • Organizer
      研究集会可積分系と幾何学の融合
    • Place of Presentation
      東北大学(仙台市)
    • Year and Date
      2009-04-19
    • Related Report
      2011 Final Research Report
  • [Presentation] On the upper bound of the number of exceptional values of the hyperbolic Gauss map2009

    • Author(s)
      Yu Kawakami
    • Organizer
      研究集会「可積分と幾何学の融合」
    • Place of Presentation
      東北大学
    • Year and Date
      2009-04-19
    • Related Report
      2009 Annual Research Report
  • [Presentation] Ramification estimates for the Gauss map of various surfaces(Poster)2009

    • Author(s)
      Yu Kawakami
    • Organizer
      XXI-st Rolf Nevanlinna Colloquium
    • Place of Presentation
      京都大学(京都市)
    • Related Report
      2011 Final Research Report
  • [Presentation] Ramification estimates for the Gauss map of various surfaces (Poster)2009

    • Author(s)
      Yu Kawakami
    • Organizer
      XXI-st Rolf Nevanlinna Colloquium
    • Place of Presentation
      京都大学
    • Related Report
      2009 Annual Research Report
  • [Book] 3次元双曲型空間内の平均曲率1の曲面-極小曲面との関係をテーマとして-2009

    • Author(s)
      梅原雅顕述、川上裕記、名古屋大学大学院多元数理科学研究科
    • Total Pages
      74
    • Publisher
      多元数理科学講究録
    • Related Report
      2011 Final Research Report
  • [Book] 3次元双曲型空間の平均曲率1の曲面-極小曲面との関係をテーマとして-多元数理講義録Volume 92009

    • Author(s)
      梅原雅顕述、川上裕記
    • Total Pages
      74
    • Publisher
      名古屋大学大学院多元数理科学研究科
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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