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Study of Conformal Geometry from the Viewpoint of Topology and Analysis

Research Project

Project/Area Number 18540098
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geometry
Research InstitutionTokyo University of Science

Principal Investigator

AKUTAGAWA Kazuo  Tokyo University of Science, 理工学部, 教授 (80192920)

Co-Investigator(Kenkyū-buntansha) 小林 治  熊本大学, 理学部, 教授 (10153595)
久村 裕憲  静岡大学, 理学部, 准教授 (30283336)
利根川 吉廣  北海道大学, 大学院・理学研究科, 准教授 (80296748)
井関 裕靖  東北大学, 大学院・理学研究科, 准教授 (90244409)
山田 澄生  東北大学, 大学院・理学研究科, 准教授 (90396416)
Co-Investigator(Renkei-kenkyūsha) KOBAYASHI Osamu  熊本大学, 理学部, 教授 (10153595)
TONEGAWA Yoshihiro  北海道大学, 大学院理学研究科, 教授 (80296748)
KUMURA Hironori  静岡大学, 理学部, 准教授 (30283336)
IZEKI Hiroyasu  東北大学, 大学院・理学研究科, 准教授 (90244409)
YAMADA Sumio  東北大学, 大学院・理学研究科, 准教授 (90396416)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,060,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥660,000)
Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2007: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords微分幾何 / 微分トポロジー / 多様体上の解析 / 共形幾何 / 山辺不変量 / 幾何解析 / Perelman不変量 / Ricci flow / 離散群 / 非線形解析 / 逆平均曲率流 / 調和写像
Research Abstract

コンパクト多様体と言う空間に対して, そこに実現される形(リーマン計量) の在り様全体のなかで最も自然な形を求めることを目標とし, そのため導入された指標が山辺不変量と呼ばれる(共形幾何を経由して)定義された微分位相不変量である.この不変量を求めること, およびその振舞いを調べることが目標である.本研究では, 正の3次元多様体の山辺不変量の計算及びその振舞いに関して成果を得た.また正の山辺不変量を持つ直積多様体に関して, その下からの評価を与えた.さらに, この下からの評価と山辺不変量の手術理論の間に成立すると予想される, 山辺不変量に関する不等式の提出とこの予想の部分的結果を得た.

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (55 results)

All 2009 2008 2007 2006

All Journal Article (29 results) (of which Peer Reviewed: 17 results) Presentation (26 results)

  • [Journal Article] Perelman's invariant and the Yamabe invariant2008

    • Author(s)
      Kazuo Akutagawa
    • Journal Title

      Proc. TUS-NPC Bilateral Seminar 1

      Pages: 120-121

    • Related Report
      2008 Final Research Report
  • [Journal Article] 山辺不変量 : 手術理論と直積多様体に関する話題から(基調講演)2008

    • Author(s)
      芥川和雄
    • Journal Title

      第55回幾何学シンポジウム講演要旨 1

      Pages: 1-13

    • Related Report
      2008 Final Research Report
  • [Journal Article] Ricci curvature of Affine connections2008

    • Author(s)
      Kobayashi Osamu
    • Journal Title

      Tohoku J. Math. 60

      Pages: 357-364

    • NAID

      110006890174

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Applications of geometric measure theory to two-phase separation problems2008

    • Author(s)
      Yoshihiro Tonegawa
    • Journal Title

      Sugaku Expos. 21

      Pages: 97-115

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 山辺不変量 : 手術理論と直積多様体に関する話題から2008

    • Author(s)
      芥 川 和 雄
    • Journal Title

      第55回幾何学シンポジウム講演要旨(基調講演) 1

      Pages: 1-13

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Perelman's invariant and the Yamabe invariant2008

    • Author(s)
      Kazuo Akutagawa
    • Journal Title

      Proceedings of the TUS-NPU Bilateral Seminar 2008 1

      Pages: 120-121

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Ricci curvature of affine connections2008

    • Author(s)
      Osamu Kobayashi
    • Journal Title

      Tohoku Mathematical Jouranal 60

      Pages: 357-364

    • NAID

      110006890174

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Partial regularity of weak solutions to Maxwell's equation in quasi-static electromagnetic field2008

    • Author(s)
      Yoshihiro Tonegawa
    • Journal Title

      Methods and Applications of Analysis 15

      Pages: 205-222

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On Yamabe constants of Riemannian products2008

    • Author(s)
      Kazuo Akutagawa, Luis A. Florit, Jimmy Petean
    • Journal Title

      Communications in Analysis and Geometry 15

      Pages: 947-969

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Convergence of phase-field approximations to the Gibbs-Thomson law2008

    • Author(s)
      Matthias Roeger, Yoshihiro Tonegawa
    • Journal Title

      Calculus of Variations and Partial Differential Equations 32

      Pages: 111-136

    • NAID

      120000952615

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Andre Neves, 3-manifolds with Yamabe invariant greater than that of RP^32007

    • Author(s)
      Kazuo Akutagawa
    • Journal Title

      J. Differential Geom. 75

      Pages: 359-386

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Claude LeBrun, Perelman's invariant, Ricci flow, and the Yamave invariants of smooth manifolds2007

    • Author(s)
      Kazuo Akutagawa, Masashi Ishida
    • Journal Title

      Archiv der Math. 88

      Pages: 71-76

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Luis A. Florit, Jimmy Petean, On Yamabe constants of Riemannian products2007

    • Author(s)
      Kazuo Akutagawa
    • Journal Title

      Comm. Anal. Geom. 15

      Pages: 947-969

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Projective structures of a curve in a conformal space, From geometry to quantum mechanics2007

    • Author(s)
      Kobayashi Osamu
    • Journal Title

      Prog. Math. 252

      Pages: 47-51

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Higher multiplicities in the one-dimensional Allen-Cahn action functional2007

    • Author(s)
      Maria R. Westdickenberg, Yoshihiro Tonegawa
    • Journal Title

      Indiana Univ. Math. J. 56

      Pages: 2935-2989

    • NAID

      120006459525

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Perelman's invariant, Ricci flow, and the Yamabe invarinats of smooth manifolds2007

    • Author(s)
      Kazuo Akutagawa, Masashi Ishida, Claude LeBrun
    • Journal Title

      Archiv der Mathematik 88

      Pages: 71-76

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Apollonius points and anharmonic ratios2007

    • Author(s)
      Osamu Kobayashi
    • Journal Title

      Tokyo Journal of Mathematics 30

      Pages: 117-119

    • NAID

      120005345661

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Higher multiplicities in the one-dimensional Allen-Cahn action functional2007

    • Author(s)
      Maria Westdickenberg, Yoshihiro Tonegawa
    • Journal Title

      Indiana University Mathematics Jouranal 56

      Pages: 2935-2989

    • NAID

      120006459525

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic clusters and fold energies2007

    • Author(s)
      Yoshikazu Giga, Motohiko Kubo, Yoshihiro Tonegawa
    • Journal Title

      Proceedings of the Royal Society of Edinburgh: Section A 137

      Pages: 23-40

    • NAID

      120006459377

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On variational formulations of singular minimal subvarieties2007

    • Author(s)
      Sumio Yamada
    • Journal Title

      数理解析研究所講究録 1577

      Pages: 55-63

    • Related Report
      2007 Annual Research Report
  • [Journal Article] 3-manifolds with Yamabe invariant greater than that of RP^32007

    • Author(s)
      Kazuo Akutagawa, Andre Neves
    • Journal Title

      Journal of Defferential Geometry 75

      Pages: 359-386

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Projective structures of a curve in a conformal space2007

    • Author(s)
      Osamu Kobayashi
    • Journal Title

      From Geometry to Quantum Mechanics, Progt. Math., Birkhauser 252

      Pages: 47-51

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A variational problem For affine connections2006

    • Author(s)
      Kobayashi Osamu
    • Journal Title

      Archiv der Math 86

      Pages: 464-469

    • NAID

      120005345650

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A fixed- point theorem for discrete-group actions on Hadamard spaces2006

    • Author(s)
      井関裕靖, 近藤剛史, 納谷信
    • Journal Title

      数理解析 研究所講究録 1492

      Pages: 56-64

    • Related Report
      2008 Final Research Report
  • [Journal Article] The Parametrized Steiner problem and the Singular Plateau via energy2006

    • Author(s)
      Chikako Mese, Sumio Yamada
    • Journal Title

      Trans. Amer. Math. Soc. 358

      Pages: 2875-2895

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A variational problem for affine connections2006

    • Author(s)
      Osamu Kobayashi
    • Journal Title

      Archiv der Mathematik 86

      Pages: 464-469

    • NAID

      120005345650

    • Related Report
      2006 Annual Research Report
  • [Journal Article] The parameterized Steiner problem and the singular Plateau via energy2006

    • Author(s)
      Chikako Mese, Sumio Yamada
    • Journal Title

      Transactions of the American Mathematical Society 358

      Pages: 2875-2895

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Sharp-interface limit of the action functional for Allen Cahn in one space dimension2006

    • Author(s)
      Yoshihiro Tonegawa
    • Journal Title

      Calculus of Variations and Partial Differential Equations 25

      Pages: 50-534

    • NAID

      120006459416

    • Related Report
      2006 Annual Research Report
  • [Journal Article] A fixed-point theorem for discrete-group actions on Hadamard spaces2006

    • Author(s)
      井関裕靖, 近藤剛史, 納谷信
    • Journal Title

      数理解析研究所講究録 1492

      Pages: 56-64

    • Related Report
      2006 Annual Research Report
  • [Presentation] On the discrete spectrum of Schrodinger operator on noncompact Riemannian manifolds(幾何学分科会・一般講演)2009

    • Author(s)
      久村裕憲
    • Organizer
      2009年度日本数学会年会
    • Place of Presentation
      東京大学
    • Year and Date
      2009-03-28
    • Related Report
      2008 Final Research Report
  • [Presentation] The uncertainty principle lemma under gravity and the discrete spectrum of Schrodinger operators2009

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会「ソボレフ 不等式とその周辺」
    • Place of Presentation
      東北大学
    • Year and Date
      2009-03-24
    • Related Report
      2008 Final Research Report
  • [Presentation] The uncertainty principle lemma under gravity and the discrete spectrum of Schrodinger operators2009

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      ソボレフ不等式とその周辺
    • Place of Presentation
      東北大学
    • Year and Date
      2009-03-24
    • Related Report
      2008 Annual Research Report
  • [Presentation] The uncertainty principle lemma under gravity and the discrete spectrum of Schrodinger operators2008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会「The 9-th Pacific Rim Geometry Conference」
    • Place of Presentation
      National Taiwan University
    • Year and Date
      2008-12-11
    • Related Report
      2008 Final Research Report
  • [Presentation] The uncertainty principle lemma under gravity andthe discrete spectrum of Schrodinger operators2008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      The 9-th Pacific Rim Geometry Conference
    • Place of Presentation
      National Taiwan University (Taiwan)
    • Year and Date
      2008-12-11
    • Related Report
      2008 Annual Research Report
  • [Presentation] Weil-Petersson geometry of Teichmuller-Coxeter complex2008

    • Author(s)
      Sumio Yamada
    • Organizer
      国際 研究集会「Perspectives in Geometric Analysis」
    • Place of Presentation
      Peking University
    • Year and Date
      2008-10-30
    • Related Report
      2008 Final Research Report
  • [Presentation] On some regularity issues of stable critical points for phase boundary problems2008

    • Author(s)
      Yoshihiro Tonegawa
    • Organizer
      熊本における偏微分方程式研究集会
    • Place of Presentation
      熊本大学
    • Year and Date
      2008-10-25
    • Related Report
      2008 Final Research Report
  • [Presentation] 山辺不変量 : 手術理論と直積 多様体に関する話題から(基調講演)2008

    • Author(s)
      芥川和雄
    • Organizer
      第55回幾何学シンポジウム
    • Place of Presentation
      弘前大学
    • Year and Date
      2008-08-25
    • Related Report
      2008 Final Research Report
  • [Presentation] 山辺不変量 : 手術理論と直積多様体に関する話題から(基調講演)2008

    • Author(s)
      芥川 和雄
    • Organizer
      第55回幾何学シンポジウム
    • Place of Presentation
      弘前大学
    • Year and Date
      2008-08-25
    • Related Report
      2008 Annual Research Report
  • [Presentation] A fixed-point property of discrete groups and energy of equivariant maps2008

    • Author(s)
      Izeki Hiroyasu
    • Organizer
      1st MSJ-SI「Probabilistic Approach to Geometry」
    • Place of Presentation
      京都大学
    • Year and Date
      2008-08-05
    • Related Report
      2008 Final Research Report
  • [Presentation] On the Yamabe invariant of M X S^12008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会 「Mini-Workshop in Regensburg, Scalar Curvature and semilinear PDEs in Geometry and topology」
    • Place of Presentation
      University of Regensburg
    • Year and Date
      2008-05-20
    • Related Report
      2008 Final Research Report
  • [Presentation] On the Yamabe invar iant of M X S2008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      Mini-Workshop in Regensburg, Scalar curvature and semilinear PDEsin geometry and topology
    • Place of Presentation
      University of Regensburg (Germany)
    • Year and Date
      2008-05-20
    • Related Report
      2008 Annual Research Report
  • [Presentation] Yamabe constants of infinite coverings and a positive mass theorem2008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会「International Meeting on Spectral Geometry and Related Topics, Potsdam 2008」
    • Place of Presentation
      Potsdam University
    • Year and Date
      2008-05-14
    • Related Report
      2008 Final Research Report
  • [Presentation] Yamabe constants of infinite converings and a positive mass theorem2008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      International Meeting on Spectral Geometryand Related Topics, Potsdam 2008
    • Place of Presentation
      Potsdam University (Germany)
    • Year and Date
      2008-05-14
    • Related Report
      2008 Annual Research Report
  • [Presentation] On the Yamabe invariant of M X S^12008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会 「The 3rd Geometry Conference for Friendship of Japan and China」
    • Place of Presentation
      名古屋大学
    • Year and Date
      2008-01-26
    • Related Report
      2008 Final Research Report
  • [Presentation] On the Yamabe invariant of M×S^12008

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      The 3rd Geometry Conference for Friendship of Japan and China
    • Place of Presentation
      名古屋大学
    • Year and Date
      2008-01-26
    • Related Report
      2007 Annual Research Report
  • [Presentation] 同変写像のエネルギーとランダム群に対する固定点定理2008

    • Author(s)
      井関 裕靖
    • Organizer
      福岡微分幾何学研究会
    • Place of Presentation
      福岡大学セミナーハウス
    • Year and Date
      2008-01-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] Yamabe constants of infinite coverings and a positive mass theorem2007

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会「Variational Problems in Geometry」
    • Place of Presentation
      仙台国際センター
    • Year and Date
      2007-09-20
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] Ricci curvature affine connections2007

    • Author(s)
      Kobayashi Osamu
    • Organizer
      国際研究集会「Variational Problems in Geometry」
    • Place of Presentation
      仙台国際センター
    • Year and Date
      2007-09-18
    • Related Report
      2008 Final Research Report
  • [Presentation] Ricci curvature of affine connections2007

    • Author(s)
      Osamu Kobayashi
    • Organizer
      国際研究集会「Variational Problems in Geometry」
    • Place of Presentation
      仙台国際センター
    • Year and Date
      2007-09-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] Yamabe constants of infinite coverings and a positive mass theorem2007

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会「International Conference in Geometry and Analysis, Nanjin 2007」
    • Place of Presentation
      Nanjin University
    • Year and Date
      2007-08-09
    • Related Report
      2008 Final Research Report
  • [Presentation] Yamabe constants of infinite coverings and a positive mass theorem2007

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      International Conference in Geometry and Analysis, Nanjin 2007
    • Place of Presentation
      南京大学(中国)
    • Year and Date
      2007-08-09
    • Related Report
      2007 Annual Research Report
  • [Presentation] 山辺不変量-共形幾何の広がり-(企画特別講演)2007

    • Author(s)
      芥川和雄
    • Organizer
      2007年度日本数学会年会
    • Place of Presentation
      埼玉大学
    • Year and Date
      2007-03-29
    • Related Report
      2008 Final Research Report
  • [Presentation] Perelman不変量, Ricci flowおよび山辺不変量2007

    • Author(s)
      芥川和雄
    • Organizer
      微分幾何研究集会「リーマン幾何と幾何解析」
    • Place of Presentation
      筑波大学
    • Year and Date
      2007-03-07
    • Related Report
      2008 Final Research Report
  • [Presentation] The Yamabe constants of infinite coverings and a positive mass theorem2007

    • Author(s)
      Kazuo Akutagawa
    • Organizer
      国際研究集会「Geometry of Singularities」
    • Place of Presentation
      東北大学
    • Year and Date
      2007-01-12
    • Related Report
      2008 Final Research Report
  • [Presentation] 山辺の問題, Positive Mass Theoremおよび山辺不変量2007

    • Author(s)
      芥川和雄
    • Organizer
      特異点研究会「特異点と時空, および関連する物理」
    • Place of Presentation
      学習院大学
    • Related Report
      2008 Final Research Report

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Published: 2006-04-01   Modified: 2019-04-15  

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