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Study of singularities in the minimal model theory in higher dimension

Research Project

Project/Area Number 20684002
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Algebra
Research InstitutionKyoto University

Principal Investigator

KAWAKITA Masayuki  京都大学, 数理解析研究所, 准教授 (10378961)

Project Period (FY) 2008 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords極小モデル理論 / 極小対数的食違い係数 / モチーフ積分 / イデアル進位相 / 昇鎖律 / 対数的標準特異点 / Riemann-Roch公式 / 因子収縮写像 / 特異点
Research Abstract

I reduced the boundedness of minimal log discrepancies to the boundedness of multiplicities or embedding dimensions by using Riemann-Roch theorem, and through the analysis of Artinian rings as hyperplane sections, I recovered this boundedness in dimension 3 and the characterisation of 3-fold Gorenstein terminal singularities. From the point of view of the ascending chain condition, I studied the extension of the ideal-adic semi-continuity of log canonical thresholds due to Kollar and de Fernex, Ein, Mustata, to minimal log discrepancies, and proved this semi-continuity in the setting of purely log terminal singularities by using the theory of motivic integration. I studied also the classification of 3-fold divisorial contractions.

Report

(6 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report   Self-evaluation Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (44 results)

All 2012 2011 2010 2009 2008 Other

All Journal Article (9 results) (of which Peer Reviewed: 3 results) Presentation (29 results) Remarks (6 results)

  • [Journal Article] Supplement to classification of threefold divisorial contractions2012

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      Nagoya Mathematical Journal

      Volume: 206

    • NAID

      120004873687

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Journal Article] Towards boundedness of minimal log discrepancies by Riemann. Roch theorem2011

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      American Journal of Mathematics

      Volume: 133 Issue: 5 Pages: 1299-1311

    • DOI

      10.1353/ajm.2011.0037

    • NAID

      120003517899

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Journal Article] Towards boundedness of minimal log discrepancies by Riemann-Roch theorem2010

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      American Journal of Mathematics (掲載決定)

    • NAID

      120003517899

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Problems on singularities from the theory of minimal models2009

    • Author(s)
      川北真之
    • Journal Title

      第54回代数学シンポジウム報告集

      Pages: 47-54

    • Related Report
      2011 Final Research Report 2010 Self-evaluation Report 2009 Annual Research Report
  • [Journal Article] On a comparison of minimal log discrepancies in terms of motivic integration2008

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      Journal fur die Reine und Angewandte Mathematik

      Volume: 620 Issue: 620 Pages: 55-65

    • DOI

      10.1515/crelle.2008.048

    • Related Report
      2011 Final Research Report
  • [Journal Article] On a comparison of minimal log discrepancies in terms of motivic integration2008

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      Journal fur die Reine und Angewandte Mathematik 620(refereed)

      Pages: 55-65

    • Related Report
      2010 Self-evaluation Report
  • [Journal Article] On a comparison of minimal log discrepancies in terms of motivic integration2008

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      Journal far die Reine and Angewandte Mathematik 620

      Pages: 55-65

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Towards boundedness of minimal log discrepancies by Riemann-Roch theorem

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      to appear in American Journal of Mathematics (refereed)

    • NAID

      120003517899

    • Related Report
      2010 Self-evaluation Report
  • [Journal Article] Towards boundedness of minimal log discrepancies by Riemann--Roch theorem

    • Author(s)
      Masayuki Kawakita
    • Journal Title

      American Journal of Mathematics

      Volume: (掲載確定)

    • NAID

      120003517899

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Singularities in the minimal model program2011

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Erwin Schrodinger International Institute
    • Place of Presentation
      Austria
    • Year and Date
      2011-12-09
    • Related Report
      2011 Final Research Report
  • [Presentation] Singularities in the minimal model program2011

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Algebraic versus analytic geometry
    • Place of Presentation
      Erwin Schrodinger International Institute, Austria(招待講演)
    • Year and Date
      2011-12-09
    • Related Report
      2011 Annual Research Report
  • [Presentation] How to classify three-fold divisorial contractions2011

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Singularity theory and its extension
    • Place of Presentation
      Kyoto University Japan
    • Year and Date
      2011-08-22
    • Related Report
      2011 Final Research Report
  • [Presentation] Singularities in the minimal model program2011

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Singularity theory and its extension
    • Place of Presentation
      京都大学(招待講演)
    • Year and Date
      2011-08-22
    • Related Report
      2011 Annual Research Report
  • [Presentation] Ideal-adic semi-continuity problem for minimal log discrepancies2011

    • Author(s)
      Masayuki Kawakita
    • Organizer
      MMP and extremal rays
    • Place of Presentation
      Kyoto University Japan
    • Year and Date
      2011-06-21
    • Related Report
      2011 Final Research Report
  • [Presentation] Ideal-adic semi-continuity problem for minimal log discrepancies2011

    • Author(s)
      Masayuki Kawakita
    • Organizer
      MMP and extremal rays
    • Place of Presentation
      京都大学(招待講演)
    • Year and Date
      2011-06-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] Ideal-adic semi-continuity problem for minimal log discrepancies2011

    • Author(s)
      川北真之
    • Organizer
      代数幾何学セミナー
    • Place of Presentation
      University of Tokyo Japan
    • Year and Date
      2011-04-18
    • Related Report
      2011 Final Research Report
  • [Presentation] Ideal-adic semi-continuity problem for minimal log discrepancies2011

    • Author(s)
      Masayuki Kawakita
    • Organizer
      代数幾何学セミナー
    • Place of Presentation
      東京大学(招待講演)
    • Year and Date
      2011-04-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Singularities in the minimal model program2010

    • Author(s)
      Masayuki Kawakita
    • Organizer
      5th Pacific Rim conference on mathematics
    • Place of Presentation
      Stanford University USA
    • Year and Date
      2010-07-01
    • Related Report
      2011 Final Research Report
  • [Presentation] Singularities in the minimal model program2010

    • Author(s)
      Masayuki Kawakita
    • Organizer
      5th Pacific Rim conference on mathematics
    • Place of Presentation
      Stanford University, USA
    • Year and Date
      2010-07-01
    • Related Report
      2010 Self-evaluation Report
  • [Presentation] Singularities in the minimal model program2010

    • Author(s)
      Masayuki Kawakita
    • Organizer
      5th Pacific Rim conference on mathematics
    • Place of Presentation
      Stanford University, USA(招待講演)
    • Year and Date
      2010-07-01
    • Related Report
      2010 Annual Research Report
  • [Presentation] On minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Invariants in algebraic geometry
    • Place of Presentation
      University of Tokyo Japan
    • Year and Date
      2009-12-09
    • Related Report
      2011 Final Research Report
  • [Presentation] On minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Invariants in algebraic geometry
    • Place of Presentation
      University of Tokyo, Japan
    • Year and Date
      2009-11-09
    • Related Report
      2010 Self-evaluation Report 2009 Annual Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Algebraic geometry seminar
    • Place of Presentation
      University of Michigan USA
    • Year and Date
      2009-08-24
    • Related Report
      2011 Final Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Algebraic geometry seminar
    • Place of Presentation
      University of Michigan, USA
    • Year and Date
      2009-08-24
    • Related Report
      2009 Annual Research Report
  • [Presentation] Problems on singularities from the theory of minimal models2009

    • Author(s)
      川北真之
    • Organizer
      第54回代数学シンポジウム
    • Place of Presentation
      Meiji University Japan
    • Year and Date
      2009-08-03
    • Related Report
      2011 Final Research Report
  • [Presentation] Problems on singularities from the theory of minimal models2009

    • Author(s)
      川北真之
    • Organizer
      第54回代数学シンポジウム
    • Place of Presentation
      Meiji University, Japan
    • Year and Date
      2009-08-03
    • Related Report
      2010 Self-evaluation Report 2009 Annual Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      1st Pacific Rim mathematical association congress
    • Place of Presentation
      University of New South Wales Australia
    • Year and Date
      2009-07-10
    • Related Report
      2011 Final Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      1st Pacific Rim mathematical association congress
    • Place of Presentation
      University of New South Wales, Australia
    • Year and Date
      2009-07-10
    • Related Report
      2010 Self-evaluation Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      1st Pacific Rim Mathematical Association Congress
    • Place of Presentation
      University of New South Wales, Australia
    • Year and Date
      2009-07-10
    • Related Report
      2009 Annual Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies, International conference2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Steklov Mathematical Institute
    • Place of Presentation
      Russia
    • Year and Date
      2009-07-02
    • Related Report
      2011 Final Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Geometry of algebraic varieties
    • Place of Presentation
      Steklov Mathematical Institute, Russia
    • Year and Date
      2009-07-02
    • Related Report
      2010 Self-evaluation Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      International conference "Geometry of algebraic varieties"
    • Place of Presentation
      Steklov Mathematical Institute, Russia
    • Year and Date
      2009-07-02
    • Related Report
      2009 Annual Research Report
  • [Presentation] Problems on singularities from the theory of minimal models2009

    • Author(s)
      川北真之
    • Organizer
      大談話会
    • Place of Presentation
      Kyoto University Japan
    • Year and Date
      2009-05-20
    • Related Report
      2011 Final Research Report
  • [Presentation] 極小モデル理論の特異点問題2009

    • Author(s)
      川北真之
    • Organizer
      数学大談話会
    • Place of Presentation
      Kyoto University, Japan
    • Year and Date
      2009-05-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Algebraic geometry seminar
    • Place of Presentation
      University of Cambridge UK
    • Year and Date
      2009-01-28
    • Related Report
      2011 Final Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2009

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Algebraic geometry seminar
    • Place of Presentation
      University of Cambridge, UK
    • Year and Date
      2009-01-28
    • Related Report
      2008 Annual Research Report
  • [Presentation] Towards boundedness of minimal log discrepancies2008

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Hayama symposium on complex analysis in several variables XII
    • Place of Presentation
      Japan
    • Year and Date
      2008-07-15
    • Related Report
      2011 Final Research Report 2010 Self-evaluation Report
  • [Presentation] Towards boundedness of minimal log discrepancies2008

    • Author(s)
      Masayuki Kawakita
    • Organizer
      Hayama symposium on complex analysis inseveral variables XII
    • Place of Presentation
      Hayama, Japan
    • Year and Date
      2008-07-15
    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://www.kurims.kyoto-u.ac.jp/~masayuki/

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://www.kurims.kyoto-u.ac.jp/~masayuki

    • Related Report
      2011 Annual Research Report
  • [Remarks] ホームページ

    • URL

      http://www.kurims.kyoto-u.ac.jp/~masayuki

    • Related Report
      2010 Self-evaluation Report
  • [Remarks]

    • URL

      http://www.kurims.kyoto-u.ac.jp/~masayuki

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.kurims.kyoto-u.ac.jp/~masayuki

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www.kurims.kyoto-u.ac.jp/~masayuki

    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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