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2015 Fiscal Year Annual Research Report

複素解析幾何の総合的研究

Research Project

Project/Area Number 15H02057
Research InstitutionThe University of Tokyo

Principal Investigator

平地 健吾  東京大学, 大学院数理科学研究科, 教授 (60218790)

Project Period (FY) 2015-04-01 – 2020-03-31
Keywords複素解析 / 多変数函数論 / ベルグマン核 / 放物型幾何学 / 値分布論 / 特異点 / L2拡張定理
Outline of Annual Research Achievements

国際的なワークショップ「L2拡張定理」を開催し参加者50名(海外から15名)を集めた.国内の複素解析幾何の研究発表の場として「特異点と多様体の幾何学」,函数論シンポジウム,多変数関数論冬セミナーを開催した.また若手研究者の情報交換のため函数論サマーセミナーを行った.

平地はCR幾何学に現れる全Q-prime曲率の変分公式に関する論文を完成させ投稿した.辻元はケーラー・リッチ流の時間離散化を考察し,その極限がケーラー・リッチ流を再現することを示した.後藤竜司は正則なポアソン構造の零集合が楕円曲線となる場合には変形は非障害的であり,その倉西族を特異ホモロジー群で与えた. 奥間智弘はp_gイデアルの研究を続け,有理型特異点の新たな特徴付けおよびgood idealsの存在定理を証明した.伊師英之は有界等質領域上の共変性をもつ正値函数から定義されるHartogs領域の荷重つきBergman核を明示的に記述した. 大沢健夫はヘルマンダーによるL2コホモロジーの同型定理を精密化しコンパクト多様体へ応用した.神本丈はニュートン多面体の幾何学的な性質から導かれる特異点解消を複素解析の研究に応用した.本多宣博はツイスター空間の代数幾何学的な構造に関して研究を行い,代数次元の制約に関する結果を得た.吉川謙一は馬昭平と共同で対合付きK3曲面の解析的捩率不変量τをボルチャーズ積とジーゲル保型形式を用い表示した.高山茂晴は複素多様体間の射影的な射に対し, その多重相対標準束およびその順像層の正値性に関する研究を行なった. 山ノ井克俊はアーベル多様体の部分多様体が一般型であれば,小林擬双曲的であることを,正規族についての強い結果から証明した.松村慎一は複素多様体上の随伴束の固有な正則写像による高次順像について研究し, Kollar-大沢型の消滅定理の一般化を与えた.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

L2拡張定理についての近年の目覚ましい発展をまとめた本と大沢健夫が出版し,そこに登場する先端の研究者を集めた国際的なワークショップを開催することができた.若手研究者のためのミニコースを企画し研究者グループの活性化を図った.多変数函数論冬セミナーでは多くの若手研究者の発表を行い世代交代が順調に進んでいることが確認できた.

Strategy for Future Research Activity

本年度から20年の歴史のある国際研究会「多変数函数論葉山シンポジウム」を再開する.東京大学で行われる国際会議Trends in Geometryとつながる日程のためより多くの海外からの参加者を予定している.放物型幾何学の研究者である丸亀泰二氏を特任研究員として雇用し,研究とともに東京大学での毎週の複素解析幾何セミナーの運営を任せる.例年通り函数論シンポジウム,函数論サマーセミナー,多変数函数論冬セミナーを開催し最新の研究成果の発表を行う.

  • Research Products

    (65 results)

All 2016 2015 Other

All Int'l Joint Research (1 results) Journal Article (23 results) (of which Peer Reviewed: 22 results) Presentation (39 results) (of which Int'l Joint Research: 15 results,  Invited: 31 results) Book (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] University of Auckland(ニュージーランド)

    • Country Name
      NEW ZEALAND
    • Counterpart Institution
      University of Auckland
  • [Journal Article] Newton polyhedra and weighted oscillatory integrals with smooth phases2016

    • Author(s)
      J. Kamimoto and T. Nose
    • Journal Title

      Trans. Amer. Math. Soc.

      Volume: 368 Pages: 5301--5361

    • Peer Reviewed
  • [Journal Article] On asymptotic expansions of oscillatory integrals with smooth phase in two dimensions2016

    • Author(s)
      J. Kamimoto and T. Nose
    • Journal Title

      RIMS K\^oky\^uroku Bessatsu

      Volume: B57 Pages: 141--157

    • Peer Reviewed
  • [Journal Article] 対合付きK3曲面と解析的捩率2016

    • Author(s)
      吉川 謙一
    • Journal Title

      数学

      Volume: 68 Pages: 225-245

    • Peer Reviewed
  • [Journal Article] A vanishing theorem of Koll\'ar-Ohsawa type2016

    • Author(s)
      S. Matsumura
    • Journal Title

      Mathematische Annalen

      Volume: 未定 Pages: 未定

    • Peer Reviewed
  • [Journal Article] Singularities of Narasimhan-Simha type metrics on direct images of relative pluricanonical bundles2016

    • Author(s)
      S. Takayama
    • Journal Title

      Ann.\ Inst.\ Fourier

      Volume: 66 Pages: 753-783

    • Peer Reviewed
  • [Journal Article] Analytic torsion for Borcea-Voisin threefolds2016

    • Author(s)
      K.-I. Yoshikawa
    • Journal Title

      The Jean-Michel Bismut 65th Anniversary Volume

      Volume: 未定 Pages: 未定

    • Peer Reviewed
  • [Journal Article] C^\infty logarithmic transformations and generalized complex structures2016

    • Author(s)
      R. Goto and K. Hayano
    • Journal Title

      The Journal of Symplectic Geometry

      Volume: 未定 Pages: 未定

    • Peer Reviewed
  • [Journal Article] Unobstructed deformations of generalized complex structures induced by C^\nifty logarithmic symplectic structures and logarithmic Poisson structures2016

    • Author(s)
      R. Goto
    • Journal Title

      Proceedings of China-Japan Geometry Conference: Geometry and Topology of Manifold

      Volume: 未定 Pages: 未定

    • Peer Reviewed
  • [Journal Article] Good ideals and p_g-ideals in two-dimensional normal singularities2016

    • Author(s)
      T. Okuma, Kei-ichi Watanabe and Ken-ichi Yoshida
    • Journal Title

      Manuscripta Math.

      Volume: 未定 Pages: 未定

    • DOI

      10.1007/s00229-016-0821-7

    • Peer Reviewed
  • [Journal Article] Rees algebras and p_g-ideals in a two-dimensional normal local domain2016

    • Author(s)
      T. Okuma, Kei-ichi Watanabe and Ken-ichi Yoshida
    • Journal Title

      Proc. Amer. Math. Soc.

      Volume: 未定 Pages: 未定

    • Peer Reviewed
  • [Journal Article] Matrix realization of homogeneous cone2016

    • Author(s)
      Hideyuki Ishi
    • Journal Title

      Lecture Notes of Computer Science

      Volume: 9389 Pages: 248-256

    • DOI

      10.1007/978-3-319-25040-3_28

    • Peer Reviewed
  • [Journal Article] Toric resolution of singularities in a certain class of C^{\infty} functions and asymptotic analysis of oscillatory integrals2016

    • Author(s)
      J. Kamimoto and T. Nose
    • Journal Title

      J. Math. Soc. Univ. Tokyo

      Volume: 23 Pages: 425-485

    • Peer Reviewed
  • [Journal Article] コホモロジーの消滅定理と単射性定理について2015

    • Author(s)
      S. Matsumura
    • Journal Title

      2015年度城崎代数幾何シンポジウムの報告集

      Volume: 無し Pages: 61-80

  • [Journal Article] Some applications of the theory of harmonic integrals2015

    • Author(s)
      S. Matsumura
    • Journal Title

      Complex Manifolds

      Volume: 2 Pages: 16--25

    • Peer Reviewed
  • [Journal Article] Injectivity theorems with multiplier ideal sheaves and their applications2015

    • Author(s)
      S. Matsumura
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 144 Pages: 241-255

    • DOI

      10.1007/978-4-431-55744-9_18

    • Peer Reviewed
  • [Journal Article] A Nadel vanishing theorem for metrics with minimal singularities on big line bundles2015

    • Author(s)
      S. Matsumura
    • Journal Title

      Advances in Mathematics

      Volume: 280 Pages: 188-207

    • Peer Reviewed
  • [Journal Article] Holomorphic curves in algebraic varieties of maximal Albanese dimension2015

    • Author(s)
      K.Yamanoi
    • Journal Title

      International Journal of Mathematics

      Volume: 26 Pages: 45ページ

    • DOI

      10.1142/S0129167X15410062

    • Peer Reviewed
  • [Journal Article] On moderate degenerations of polarized Ricci-flat Kahler manifolds2015

    • Author(s)
      S. Takayama
    • Journal Title

      J. Math. Sci. Univ. Tokyo

      Volume: 22 Pages: 469489

    • Peer Reviewed
  • [Journal Article] Geometry of some twistor spaces of algebraic dimension one2015

    • Author(s)
      Nobuhiro Honda
    • Journal Title

      Complex Manifolds

      Volume: 2 Pages: 105-130

    • Peer Reviewed
  • [Journal Article] Some dynamical systems of extremal measures2015

    • Author(s)
      T. Tsuji
    • Journal Title

      Springer Proceedings in Mathematics & Statistics

      Volume: 144 Pages: 327-342

    • DOI

      10.1007/978-4-431-55744-9_25

    • Peer Reviewed
  • [Journal Article] A remark on Hormander’s isomorphism2015

    • Author(s)
      T. Ohsawa
    • Journal Title

      Springer Proceedings in Math. & Statistics

      Volume: 144 Pages: 273-280

    • DOI

      10.1007/978-4-431-55744-9_20

    • Peer Reviewed
  • [Journal Article] Application and simplified proof of a sharp L^2 extension theorem2015

    • Author(s)
      T. Ohsawa
    • Journal Title

      Nagoya Math. J.

      Volume: 220 Pages: 81--89

    • DOI

      10.1215/00277630-3335780

    • Peer Reviewed
  • [Journal Article] On meromorphic continuation of local zeta functions2015

    • Author(s)
      J. Kamimoto and T. Nose
    • Journal Title

      Proceedings in Mathematics & Statistics

      Volume: 144 Pages: 187-195

    • DOI

      10.1007/978-4-431-55744-9_13

    • Peer Reviewed
  • [Presentation] Moishezon twistor spaces2016

    • Author(s)
      Nobuhiro Honda
    • Organizer
      Complex Geometry Seminar
    • Place of Presentation
      MSRI (Berkeley)
    • Year and Date
      2016-03-28 – 2016-03-28
    • Int'l Joint Research / Invited
  • [Presentation] Bergman-Hartogs” 領域上の調和解析2016

    • Author(s)
      伊師英之
    • Organizer
      日本数学会年会函数解析学分科会一般講演
    • Place of Presentation
      筑波大学
    • Year and Date
      2016-03-17 – 2016-03-17
  • [Presentation] Plurisubharmonic variation of Kahler-Ricci flows2016

    • Author(s)
      辻元
    • Organizer
      Workshop on L^2-extension theorems
    • Place of Presentation
      東京大学
    • Year and Date
      2016-02-18 – 2016-02-18
    • Int'l Joint Research / Invited
  • [Presentation] A remark on a theorem of Guan and Zhou2016

    • Author(s)
      T. Ohsawa
    • Organizer
      Workshop on L^2 extension theorems
    • Place of Presentation
      東京大学
    • Year and Date
      2016-02-18 – 2016-02-18
    • Int'l Joint Research
  • [Presentation] A vanishing theorem of Kollar-Ohsawa type2016

    • Author(s)
      S. Matsumura
    • Organizer
      複素解析幾何学のポテンシャル論的諸相
    • Place of Presentation
      東京大学
    • Year and Date
      2016-02-13 – 2016-02-13
    • Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2016

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Arithmetic and Algebraic Geometry
    • Place of Presentation
      東京大学
    • Year and Date
      2016-01-28 – 2016-01-28
    • Int'l Joint Research / Invited
  • [Presentation] Integral Kahler Invariants and the Bergman kernel asymptotics for line bundles2016

    • Author(s)
      Kengo Hirachi
    • Organizer
      The Third Taiwan International Conference on Differential Geometry
    • Place of Presentation
      Taiwan Univ. (台湾)
    • Year and Date
      2016-01-22 – 2016-01-22
    • Int'l Joint Research / Invited
  • [Presentation] 2次元特異点の幾何種数イデアルと次数1の楕円型特異点について2015

    • Author(s)
      奥間智弘
    • Organizer
      多変数関数論冬セミナー
    • Place of Presentation
      京都大学
    • Year and Date
      2015-12-26 – 2015-12-26
    • Invited
  • [Presentation] A remark on algebraic dimension of twistor spaces2015

    • Author(s)
      Nobuhiro Honda
    • Organizer
      多変数関数論冬セミナー
    • Place of Presentation
      京都大学
    • Year and Date
      2015-12-26 – 2015-12-26
    • Invited
  • [Presentation] On the space of holomorphic equivalence classes of bounded homogeneous domains2015

    • Author(s)
      Hideyuki Ishi
    • Organizer
      Geometric and Harmonic Analysis on Homogeneous Spaces and Applications
    • Place of Presentation
      Monastir(チュニジア)
    • Year and Date
      2015-12-20 – 2015-12-20
    • Int'l Joint Research / Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2015

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Taipei Conference on Complex Geometry
    • Place of Presentation
      Academia Sinica, Taiwan
    • Year and Date
      2015-12-20 – 2015-12-20
    • Int'l Joint Research / Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2015

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      18th Autumn Workshop on Number Theory: Geometric Applications of Modular Forms of Several Variables
    • Place of Presentation
      白馬
    • Year and Date
      2015-11-07 – 2015-11-07
    • Invited
  • [Presentation] Stratified flat structures on moduli spaces of generalized complex surfaces2015

    • Author(s)
      R. Goto
    • Organizer
      複素幾何シンポジウム
    • Place of Presentation
      金沢大学
    • Year and Date
      2015-10-30 – 2015-10-30
    • Invited
  • [Presentation] Degeneration of algebraic varieties and the metric completeness of parameter spaces2015

    • Author(s)
      高山 茂晴
    • Organizer
      複素幾何シンポジウム
    • Place of Presentation
      金沢大学
    • Year and Date
      2015-10-29 – 2015-10-29
    • Invited
  • [Presentation] Plurisubharmonicity of Kaehler-Ricci flows2015

    • Author(s)
      辻元
    • Organizer
      複素幾何シンポジウム
    • Place of Presentation
      金沢大学
    • Year and Date
      2015-10-28 – 2015-10-28
    • Invited
  • [Presentation] Matrix realization of homogeneous cones2015

    • Author(s)
      Hideyuki Ishi
    • Organizer
      2nd conference on Geometric Science of Information
    • Place of Presentation
      Paris (フランス)
    • Year and Date
      2015-10-28 – 2015-10-28
    • Int'l Joint Research / Invited
  • [Presentation] An injectivity theorem with multiplier ideal sheaves for higher direct images under Kahler morphisms2015

    • Author(s)
      S. Matsumura
    • Organizer
      Kinosaki symposium on algebraic geometry
    • Place of Presentation
      Kinosaki Conference Hall(豊岡市)
    • Year and Date
      2015-10-21 – 2015-10-21
    • Invited
  • [Presentation] Application and simplified proof of a sharp L2 extension theorem2015

    • Author(s)
      T. Ohsawa
    • Organizer
      日本数学会秋季総合分科会一般講演
    • Place of Presentation
      京都産業大学
    • Year and Date
      2015-09-15 – 2015-09-15
  • [Presentation] 凸錐上の函数のラプラス変換とルジャンドル変換2015

    • Author(s)
      伊師英之
    • Organizer
      日本数学会秋期総合分科会函数解析学分科会一般講演
    • Place of Presentation
      京都産業大学
    • Year and Date
      2015-09-14 – 2015-09-14
  • [Presentation]  L^2 extension theorems and Suita conjecture2015

    • Author(s)
      T. Ohsawa
    • Organizer
      日本数学会秋季総合分科会特別講演
    • Place of Presentation
      京都産業大学
    • Year and Date
      2015-09-14 – 2015-09-14
    • Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2015

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Japan-China Geometry Conference
    • Place of Presentation
      京都大学
    • Year and Date
      2015-09-08 – 2015-09-08
    • Int'l Joint Research / Invited
  • [Presentation] On a degree of curves in algebraic varieties of maximal albanese dimension2015

    • Author(s)
      山ノ井克俊
    • Organizer
      日中幾何学研究集会
    • Place of Presentation
      京都大学
    • Year and Date
      2015-09-07 – 2015-09-07
    • Int'l Joint Research / Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2015

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Intercity Seminar on Arakelov Geometry
    • Place of Presentation
      京都大学
    • Year and Date
      2015-09-04 – 2015-09-04
    • Invited
  • [Presentation] 多重劣調和関数の近似定理について2015

    • Author(s)
      S. Matsumura
    • Organizer
      函数論サマーセミナー 企画特別講演
    • Place of Presentation
      ふれあいセンター(二本松市)
    • Year and Date
      2015-09-04 – 2015-09-04
    • Invited
  • [Presentation] 複素多様体の凸性とL^2拡張定理ー開リーマン面の分類問題の後で2015

    • Author(s)
      T. Ohsawa
    • Organizer
      大談話会
    • Place of Presentation
      名古屋大学
    • Year and Date
      2015-07-15 – 2015-07-15
    • Invited
  • [Presentation] Super critical CR invariant powers of sub-Laplacian2015

    • Author(s)
      平地 健吾
    • Organizer
      再生核の応用についての総合的な研究
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2015-07-08 – 2015-07-08
    • Invited
  • [Presentation] 対数的ポアソン構造と一般化された複素多様体の非障害的な変形について2015

    • Author(s)
      R. Goto
    • Organizer
      大岡山談話会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2015-07-07 – 2015-07-07
    • Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2015

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Trends in Modern Geometry & 10th Pacific Rim Complex Geometry Conference
    • Place of Presentation
      東京大学
    • Year and Date
      2015-07-03 – 2015-07-03
    • Int'l Joint Research / Invited
  • [Presentation] 一般化された複素多様体と変形理論2015

    • Author(s)
      R. Goto
    • Organizer
      集中講義
    • Place of Presentation
      東京工業大学
    • Year and Date
      2015-06-29 – 2015-07-03
    • Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2015

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      2015 ECNU Workshop on Geometry and Analysis on Manifolds
    • Place of Presentation
      East China Normal University, China
    • Year and Date
      2015-06-22 – 2015-06-22
    • Int'l Joint Research / Invited
  • [Presentation] Asymptotic analysis of oscillatory integrals and local zeta functions2015

    • Author(s)
      神本丈
    • Organizer
      保存則をもつ偏微分方程式に対する解の正則性・特異性の研究
    • Place of Presentation
      京都大学
    • Year and Date
      2015-06-03 – 2015-06-03
  • [Presentation] An injectivity theorem with multiplier ideal sheaves of singular metrics with transcendental singularities2015

    • Author(s)
      S. Matsumura
    • Organizer
      北海道大学解析セミナー
    • Place of Presentation
      北海道大学
    • Year and Date
      2015-05-29 – 2015-05-29
    • Invited
  • [Presentation] Some examples of twistor spaces of algebraic dimension one2015

    • Author(s)
      Nobuhiro Honda
    • Organizer
      Irish Geometry Conference
    • Place of Presentation
      Limerick (Ireland)
    • Year and Date
      2015-05-15 – 2015-05-15
    • Int'l Joint Research / Invited
  • [Presentation] Integral Kahler Invariants and the Bergman kernel asymptotics for line bundles2015

    • Author(s)
      平地 健吾
    • Organizer
      複素解析幾何セミナー
    • Place of Presentation
      東京大学
    • Year and Date
      2015-05-11 – 2015-05-11
  • [Presentation] Some integral formulas for homogeneous Siegel domains2015

    • Author(s)
      Hideyuki Ishi
    • Organizer
      Classical Analysis and Applications
    • Place of Presentation
      Buea (カメルーン)
    • Year and Date
      2015-05-06 – 2015-05-06
    • Int'l Joint Research / Invited
  • [Presentation] Analytic torsion for K3 surfaces with involution2015

    • Author(s)
      K.-I. Yoshikawa
    • Organizer
      Modular Forms and Geometry of Modular Varieties
    • Place of Presentation
      IMPA, Rio de Janeiro, Brazil
    • Year and Date
      2015-05-05 – 2015-05-05
    • Int'l Joint Research / Invited
  • [Presentation] Versions of injectivity theorems and extension theorems2015

    • Author(s)
      S. Matsumura
    • Organizer
      複素解析セミナー
    • Place of Presentation
      東北大学
    • Year and Date
      2015-04-22 – 2015-04-22
    • Invited
  • [Presentation] A transcendental method to higher cohomology groups and its applications2015

    • Author(s)
      S. Matsumura
    • Organizer
      東北大学談話会
    • Place of Presentation
      東北大学
    • Year and Date
      2015-04-20 – 2015-04-20
  • [Presentation] Asymptotic invariants of cohomology groups and curvatures of holomorphic line bundles2015

    • Author(s)
      S. Matsumura
    • Organizer
      東北大学幾何学セミナー
    • Place of Presentation
      東北大学
    • Year and Date
      2015-04-07 – 2015-04-07
  • [Book] L^2 Approaches in Several Complex Variables: Development of Oka-Cartan Theory by L^2 Estimates for the d-bar Operator2015

    • Author(s)
      T. Ohsawa
    • Total Pages
      200
    • Publisher
      Springer
  • [Funded Workshop] Workshop on L^2 Extension Theorems2016

    • Place of Presentation
      東京大学
    • Year and Date
      2016-02-15 – 2016-02-18

URL: 

Published: 2017-01-06   Modified: 2023-03-16  

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