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Castelnuovo-Mumford regularity for projective varieties

Research Project

Project/Area Number 17540035
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Algebra
Research InstitutionSaga University (2007-2008)
University of the Ryukyus (2005-2006)

Principal Investigator

MIYAZAKI Chikashi  Saga University, 理工学部, 教授 (90229831)

Co-Investigator(Kenkyū-buntansha) TERAI Naoki  佐賀大学, 文化教育学部, 准教授 (90259862)
前田 高士  琉球大学, 理学部, 教授 (30229306)
尼崎 睦実  広島大学, 大学院・教育学研究科, 准教授 (10243536)
尾形 庄悦  東北大学, 大学院・理学研究科, 准教授 (90177113)
野間 淳 (野間 敦)  横浜国立大学, 教育人間科学部, 准教授 (90262401)
Co-Investigator(Renkei-kenkyūsha) MAEDA Takashi  琉球大学, 理学部, 教授 (30229306)
AMASAKI Mutsumi  広島大学, 大学院・教育学研究科, 准教授 (10243536)
OGATA Shoetsu  東北大学, 大学院・理学研究科, 准教授 (90177113)
NOMA Atsushi  横浜国立大学, 教育人間科学部, 准教授 (90262401)
Project Period (FY) 2005 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,880,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2006: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2005: ¥900,000 (Direct Cost: ¥900,000)
Keywords代数幾何 / 可換環論 / 射影多様体 / 多項式イデアル / 極小自由分解 / シジジー / Castelnuovo / Mumford / Castelnuovo-Mumford / Del Pezzo / syzygy / free resolution / projective curv / del Pezzo surface / projective curve / del pezzo surface
Research Abstract

射影空間内において有限個の斉次多項式の零点として定義された射影多様体の定義イデアルの次数、極小自由分解の複雑さを表す重要な不変量として、Castelnuovo-Mumford 量がある。Castelnuovo-Mumford 量の上限を射影多様体の次数、余次元などで記述する問題はこの分野の重要なテーマであり、いくつかの上限が知られている。本研究において、射影曲線のCastelnuovo-Mumford 量がCastelnuovo 型の上限、次の上限を満たすときに、最小次数の射影曲面もしくは正規Del Pezzo 曲面の因子となることを示した。

Report

(5 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (40 results)

All 2009 2008 2007 2006 2005 Other

All Journal Article (32 results) (of which Peer Reviewed: 19 results) Presentation (8 results)

  • [Journal Article] Rational curves of Castelnuovo-Mumford regularity d - r +12009

    • Author(s)
      Atsushi Noma
    • Journal Title

      J. Algebra 321

      Pages: 2445-2460

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A note on Cohen-Macaulayness of Stanley- Reisner rings with Serre's condition S_22008

    • Author(s)
      Naoki Terai, Ken-ichi Yoshida
    • Journal Title

      Comm. Algebra 36

      Pages: 464-477

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A partial order on Littlewood-Richardson tableaux2008

    • Author(s)
      Takashi Maeda
    • Journal Title

      J. Algebra 319

      Pages: 3621-3652

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A note on Cohen-Macaulayness of Stanley-Reisner rings2008

    • Author(s)
      Naoki Terai, Ken-ichi Yoshida
    • Journal Title

      Communications in Algebra 36

      Pages: 464-477

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Projective curves with next to sharp bounds on Castelnuovo-Mumford regularity2007

    • Author(s)
      Chikashi Miyazaki
    • Journal Title

      J. Algebra 315

      Pages: 279-285

    • NAID

      120006697249

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Alexander duality in Stanley-Reisner rings2007

    • Author(s)
      Naoki Terai
    • Journal Title

      Affine algebraic geometry(Osaka Univ. Press, Osaka)

      Pages: 449-462

    • Related Report
      2008 Final Research Report
  • [Journal Article] Projective curves with next to sharp bounds on Castelnuovo-Mumford Regularity2007

    • Author(s)
      C.Miyazaki
    • Journal Title

      J.Algebra 315

      Pages: 279-285

    • NAID

      120006697249

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Alexander duality in Stanley Reisner rings2007

    • Author(s)
      N.Terai
    • Journal Title

      Affine algebraic geometry

      Pages: 449-462

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Projective curves with next to sharp bounds on Castelnuovo-Mumford regularity2007

    • Author(s)
      C.Miyazaki
    • Journal Title

      J. Algebra (未定)

    • NAID

      120006697249

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Castelnuovo- Mumford regularity and classical method of Castelnuovo2006

    • Author(s)
      Chikashi Miyazaki
    • Journal Title

      Kodai Math. J. 29

      Pages: 237-247

    • NAID

      130004948953

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Buchsbaum Stanley-Reisner rings and Cohen-Macaulay covers2006

    • Author(s)
      Naoki Terai, Ken-ichi Yoshida
    • Journal Title

      Comm. Algebra 34

      Pages: 2673-2681

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Stanley-Reisner rings with large multiplicities are Cohen-Macaulay2006

    • Author(s)
      Naoki Terai, Ken-ichi Yoshida
    • Journal Title

      J. Algebra 301

      Pages: 493-508

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Buchsbaum Stanley-Reisner rings with minimal multiplicity2006

    • Author(s)
      Naoki Terai, Ken-ichi Yoshida
    • Journal Title

      Proc. Amer. Math. Soc. 134

      Pages: 55-65

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] On higher syzygies of projective toric varieties2006

    • Author(s)
      Shoetsu Ogata
    • Journal Title

      Math. J. Okayama Univ. 48

      Pages: 47-55

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Degenerations and fundamental groups related to some special toric varieties2006

    • Author(s)
      Amram Meirav and Shoetsu Ogata
    • Journal Title

      Michigan Math. J. 54

      Pages: 587-610

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Very ample line bundles on regular surfaces obtained by projection2006

    • Author(s)
      Atsushi Noma
    • Journal Title

      J. Algebra 306

      Pages: 645-654

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Castelnuovo-Mumford regularity and classical method of Castelnuovo2006

    • Author(s)
      C.Miyazaki
    • Journal Title

      Kodai Math. J. 29(2)

      Pages: 237-247

    • NAID

      130004948953

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Very ample line bundles on regular surfaces obtained by projection2006

    • Author(s)
      A.Noma
    • Journal Title

      J. Algebra 306(2)

      Pages: 645-654

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Degenerations and fundamental groups related to some special toric varieties2006

    • Author(s)
      M.Amram, S.Ogata
    • Journal Title

      Michigan Math. J. 54(3)

      Pages: 587-610

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Buchsbaum Stanley-Reisner rings with minimal multiplicity2006

    • Author(s)
      N.Terai, K.Yoshida
    • Journal Title

      Proc. Amer. Math. Soc. 194(1)

      Pages: 55-65

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Buchsbaum Stanley-Reisner rings and Cohen-Macaulay covers2006

    • Author(s)
      N.Terai, K.Yoshida
    • Journal Title

      Comm. Algebra 34(7)

      Pages: 2673-2681

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Buchsbaum Stanley-Reisner rings with minimal multiplicity2006

    • Author(s)
      N.Terai 他
    • Journal Title

      Proc.Amer.Math.Soc. 134

      Pages: 55-65

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Bounds on Castelnuovo-Mumford regularity for divisors on rational normal scrolls2005

    • Author(s)
      Chikashi Miyazaki
    • Journal Title

      Collect. Math. 56

      Pages: 97-102

    • NAID

      120006325362

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] On the radical of a monomial ideal2005

    • Author(s)
      Juergen Herzog, Yukihide Takayama, Naoki Terai
    • Journal Title

      Arch. Math. 85

      Pages: 397-408

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Maximal Buchsbaum modules over Gorenstein local rings2005

    • Author(s)
      Mutsumi Amasaki
    • Journal Title

      J.Algebra 287

      Pages: 402-416

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] k-normality of weighted projective spaces2005

    • Author(s)
      Shoetsu Ogata
    • Journal Title

      Kodai Math. J. 28

      Pages: 519-524

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Multisecant lines to projective varieties2005

    • Author(s)
      Atsushi Noma
    • Journal Title

      Projective varieties with unexpected properties(Walter de Gruyter GmbH & Co. KG, Berlin)

      Pages: 349-359

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Maximal Buchsbaum modules over Gorenstein local rings2005

    • Author(s)
      M.Amasaki
    • Journal Title

      J.Algebra 287

      Pages: 402-416

    • Related Report
      2005 Annual Research Report
  • [Journal Article] k-normality of weighted projective spaces2005

    • Author(s)
      S.Ogata
    • Journal Title

      Kodai Math.J. 28

      Pages: 519-524

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Multisecunt lines to projective varieties2005

    • Author(s)
      A.Noma
    • Journal Title

      Pro.Conf.Projectives Varieties Siena 2004 de Gruyter

      Pages: 351-361

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Castelnuovo-Mumford regularity and classical method of Castelnuovo

    • Author(s)
      C.Miyazaki
    • Journal Title

      Kodai Math.J. (未定)

    • NAID

      130004948953

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Stanley-Reisner rings with large multiplicity are Cohen-Macaulay

    • Author(s)
      N.Terai 他
    • Journal Title

      J.Algebra (未定)

    • Related Report
      2005 Annual Research Report
  • [Presentation] Regularity of projective curves and Castelnuovo's method2009

    • Author(s)
      宮崎 誓
    • Organizer
      代数幾何学in九州
    • Place of Presentation
      九州大学大学院数理学研究院
    • Year and Date
      2009-02-02
    • Related Report
      2008 Annual Research Report
  • [Presentation] 射影曲線・多項式イデアルの自由分解2008

    • Author(s)
      宮崎誓
    • Organizer
      Castelnuovo-Mumford 量(日本数学会九州支部例会 特別講演)
    • Place of Presentation
      琉球大学(特別講演)
    • Related Report
      2008 Final Research Report
  • [Presentation] A Conjecture on the Castelnuovo-Mumford regularity and Castelnuovo-type bound2007

    • Author(s)
      Chikashi Miyazaki
    • Organizer
      Conference on Castelnuovo- Mumford regularity and applications(Max Planck Institute and University of Leipzig)
    • Place of Presentation
      Germany
    • Related Report
      2008 Final Research Report
  • [Presentation] Castelnuovo-Mumford regularity for projective curves on a del Pezzo surface2007

    • Author(s)
      C.Miyazaki
    • Organizer
      Workshop on Castelnuovo-Mumford regularity and applications
    • Place of Presentation
      Max Planck 研究所およびライプチヒ大学 (共催)
    • Related Report
      2007 Annual Research Report
  • [Presentation] Castelnuovo- Mumford regularity for projective curves on a del Pezzo surface2006

    • Author(s)
      Chikashi Miyazaki
    • Organizer
      Conference on Commutative Algebra dedicated to the memory of Wolfgang Vogel
    • Place of Presentation
      Eisenach(Germany)
    • Related Report
      2008 Final Research Report
  • [Presentation] Castelnuovo-Mumford regularity for projective curve on a del Pezzo surface2006

    • Author(s)
      宮崎誓
    • Organizer
      第28回可換環論シンポジウム
    • Place of Presentation
      ウェルサンピア多摩
    • Related Report
      2008 Final Research Report
  • [Presentation] Extremal bounds for Castelnuovo- Mumford regularity for projective curves2006

    • Author(s)
      Chikashi Miyazaki
    • Organizer
      Conference on Castelnuovo- Mumford regularity and related topics(Centre International de Recontres Mathematiques)
    • Place of Presentation
      Luminy, France
    • Related Report
      2008 Final Research Report
  • [Presentation] Castelnuovo-Mumford regularity for projective varieties2005

    • Author(s)
      宮崎誓
    • Organizer
      I, II, 第3回代数曲線論シンポジウム
    • Place of Presentation
      中央大学理工学部
    • Related Report
      2008 Final Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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