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Castelnuovo-Mumford regularity and syzygies for projective varieties and its related topics

Research Project

Project/Area Number 26400048
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Algebra
Research InstitutionKumamoto University (2015-2019)
Saga University (2014)

Principal Investigator

Miyazaki Chikashi  熊本大学, 大学院先端科学研究部(理), 教授 (90229831)

Co-Investigator(Kenkyū-buntansha) 岡田 拓三  佐賀大学, 理工学部, 准教授 (20547012)
寺井 直樹  岡山大学, 自然科学研究科, 教授 (90259862)
Project Period (FY) 2014-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords代数幾何 / 可換環論 / 射影多様体 / シジジー / Castelnuovo-Mumford / Castelnuovo-Mumford正則量 / ベクトル束 / 代数幾何学 / Segre積
Outline of Final Research Achievements

The Castelnuovo-Mumford regularity is one of the most important invariants measuring the complexity of the defining ideal of projective variety. Our research have obtained an upper bound of the regularity in terms of dimension, degree, codimension and linear k-Buchsbaumness of a projective variety, and have also obtained Horrocks-type splitting criteria for vector bundles on a multiprojective space.

Academic Significance and Societal Importance of the Research Achievements

射影多様体の定義多項式のシジジーを制御する問題は、ヒルベルトのシジジー定理に始まり、アイゼンバッド・後藤予想による幾何学的不変量による正則量の上限の記述につながっている。本研究は、環の性質と射影多様体の分類を結び付けることを目指したものである。また、ベクトル束の分裂判定法は1970-80年代のテーマであるが、正則量の手法から新たな視点を開いていく意義がある。

Report

(7 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (30 results)

All 2019 2018 2017 2016 2015 2014

All Journal Article (19 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 19 results,  Acknowledgement Compliant: 4 results) Presentation (11 results) (of which Int'l Joint Research: 2 results,  Invited: 7 results)

  • [Journal Article] Stable Rationality of Cyclic Covers of Projective Spaces2019

    • Author(s)
      Takuzo Okada
    • Journal Title

      Proceedings of the Edinburgh Mathematical Society

      Volume: 62 Issue: 3 Pages: 667-682

    • DOI

      10.1017/s0013091518000755

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stable rationality of orbifold Fano 3-fold hypersurfaces2019

    • Author(s)
      Takuzo Okada
    • Journal Title

      Journal of Algebraic Geometry

      Volume: 28 Issue: 1 Pages: 99-138

    • DOI

      10.1090/jag/712

    • NAID

      120005973323

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 4-Dimensional Licci Gorenstein Stanley-Reisner Ideals2019

    • Author(s)
      Rinaldo Giancarlo、Terai Naoki
    • Journal Title

      Acta Mathematica Vietnamica

      Volume: 44 Issue: 3 Pages: 691-700

    • DOI

      10.1007/s40306-019-00339-0

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Level property of ordinary and symbolic powers of Stanley-Reisner ideals2019

    • Author(s)
      Minh Nguyen Cong、Terai Naoki、Thuy Phan Thi
    • Journal Title

      Journal of Algebra

      Volume: 535 Pages: 350-364

    • DOI

      10.1016/j.jalgebra.2019.05.044

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Bounds on Castelnuovo-Mumford regularity for graded modules and projective varieties2019

    • Author(s)
      Miyazaki, Chikashi
    • Journal Title

      Beitr. Algebra Geom.

      Volume: 60 Issue: 1 Pages: 57-65

    • DOI

      10.1007/s13366-018-0398-2

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Depth and regularity modulo a principal ideal2018

    • Author(s)
      Caviglia Giulio、Ha Huy Tai、Herzog Jurgen、Kummini Manoj、Terai Naoki、Trung Ngo Viet
    • Journal Title

      Journal of Algebraic Combinatorics

      Volume: 49 Issue: 1 Pages: 1-20

    • DOI

      10.1007/s10801-018-0811-9

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Alpha Invariants of Birationally Rigid Fano Three-folds2018

    • Author(s)
      In-Kyun Kim, Takuzo Okada, Joonyeong Won
    • Journal Title

      International Mathematics Research Notices

      Volume: 印刷中 Pages: 2745-2800

    • DOI

      10.1093/imrn/rnw310

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Birational Mori fiber structures of Q-Fano 3-fold weighted complete intersections, II2018

    • Author(s)
      Takuzo Okada
    • Journal Title

      Journal fur die reine und angewandte Mathematik

      Volume: 印刷中 Issue: 738 Pages: 160-199

    • DOI

      10.1515/crelle-2015-0054

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cohomological property of vector bundles on biprojective spaces2018

    • Author(s)
      Francesco Malaspina, Chikashi Miyazaki
    • Journal Title

      Ricerche Mat.

      Volume: 掲載予定

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The projective dimension of the edge ideal of a very well-covered graph2017

    • Author(s)
      Kyouko Kimura, Naoki Terai, Siamak Yassemi
    • Journal Title

      Nagoya Mathematical Journal

      Volume: 印刷中 Pages: 169-179

    • DOI

      10.1017/nmj.2017.7

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Stability of depths of symbolic powers of Stanley-Reisner ideals2017

    • Author(s)
      Le Tuan Hoa, Kyouko Kimura, Naoki Terai, Tran Nam Trung
    • Journal Title

      J. Algebra

      Volume: 473 Pages: 307-323

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Stability of depths of symbolic powers of Stanley-Reisner ideals2017

    • Author(s)
      Le Tuan Hoa, Kyouko Kimura, Naoki Terai and Tran Nam Trung
    • Journal Title

      Journal of Algebra

      Volume: 473 Pages: 307-323

    • DOI

      10.1016/j.jalgebra.2016.10.036

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Remarks on r-planes in complete intersections2016

    • Author(s)
      Chikashi Miyazaki
    • Journal Title

      Tokyo Journal of Mathematics

      Volume: 39 Pages: 459-467

    • NAID

      120006325365

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Buchsbaum criterion of Segre products of vector bundles on mupliprojective space2016

    • Author(s)
      Chikashi Miyazaki
    • Journal Title

      Journal of Algebra

      Volume: 467 Pages: 47-57

    • DOI

      10.1016/j.jalgebra.2016.06.037

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Journal Article] Remarks on r-planes in complete intersections2016

    • Author(s)
      Chikashi Miyazaki
    • Journal Title

      Tokyo J. Math.

      Volume: 掲載予定

    • NAID

      120006325365

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Nonrational del Pezzo fibrations admitting an action of the Klein simple group2016

    • Author(s)
      Takuzo Okada
    • Journal Title

      Eur. J. Math

      Volume: 2 Pages: 319-332

    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] A cohomological criterion for splitting of vector bundles on multiprojective space2015

    • Author(s)
      Chikashi Miyazaki
    • Journal Title

      Proc. Amer. Math. Soc.

      Volume: 143 Pages: 1435-1440

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Arithmetical rank of Gorenstein squarefree monomial ideals of height three2015

    • Author(s)
      Kyouko Kimura, Naoki Terai
    • Journal Title

      Journal of Algebra

      Volume: 422 Pages: 11-32

    • DOI

      10.1016/j.jalgebra.2014.09.005

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Birational Mori fiber structures of Q-Fano threefold weighted complete intersections2014

    • Author(s)
      Takuzo Okada
    • Journal Title

      Proc. London Math. Soc.

      Volume: 109 Issue: 6 Pages: 1549-1600

    • DOI

      10.1112/plms/pdu044

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Presentation] On Horrocks-type Criteria for Vector Bundles2019

    • Author(s)
      宮崎誓
    • Organizer
      研究集会「射影多様体の幾何とその周辺」(高知大学)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 射影多様体のCastelnuovo-Mumford正則量のCastelnuovo型の上限について2019

    • Author(s)
      宮崎誓
    • Organizer
      研究集会「都の西北 代数幾何学シンポジウム」(早稲田大学)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Cohomological Criteria for Vector Bundles on Multiprojective Space2018

    • Author(s)
      Miyazaki, Chikashi
    • Organizer
      Splitting, Construction and Stability of Vector Bundles and thier Applications
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Cohomological criterion of vector bundles2018

    • Author(s)
      宮崎 誓
    • Organizer
      第5回代数幾何学研究集会 宇部
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 多重射影空間上の代数的ベクトル束のコホモロジー的性質2017

    • Author(s)
      宮崎 誓
    • Organizer
      農工大数学セミナー2017
    • Place of Presentation
      東京農工大学
    • Year and Date
      2017-03-21
    • Related Report
      2016 Research-status Report
  • [Presentation] Cohomological property of vector bundles on multiprojective space2017

    • Author(s)
      宮崎 誓
    • Organizer
      第12回 鹿児島 代数・解析・幾何学セミナー
    • Place of Presentation
      鹿児島大学
    • Year and Date
      2017-02-13
    • Related Report
      2016 Research-status Report
  • [Presentation] Bounds on Castelnuovo-Mumford regularity for graded modules and projective varieties2017

    • Author(s)
      Chikashi Miyazaki
    • Organizer
      International Conference on Commutative Algebra, Discrete Geometry and Singularity Theory, Hanoi and Halong
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Castelnuovo-Mumford regularity from the viewpoint of Koszul cohomology2017

    • Author(s)
      Chikashi Miyazaki
    • Organizer
      Algebraic Geometry Seminar in Kumamoto
    • Related Report
      2017 Research-status Report
  • [Presentation] The Castelnuovo-Mumford regularity and the Buchsbaum property of projective varieties2016

    • Author(s)
      Chikashi Miyazaki
    • Organizer
      Seminario di Geometria
    • Place of Presentation
      トリノ大学(イタリア)
    • Year and Date
      2016-03-09
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Buchsbaum criterion of Segre products of Buchsbaum modules2015

    • Author(s)
      Chikashi Miyazaki
    • Organizer
      第37回可換環論シンポジウム
    • Place of Presentation
      倉敷シーサイドホテル
    • Year and Date
      2015-11-18
    • Related Report
      2015 Research-status Report
  • [Presentation] 多重射影空間上のベクトル束のCohen-Macaulay性、Buchsbaum性、分裂判定法2015

    • Author(s)
      宮崎 誓
    • Organizer
      農工大数学セミナー2015
    • Place of Presentation
      東京農工大学
    • Year and Date
      2015-06-23
    • Related Report
      2015 Research-status Report
    • Invited

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Published: 2014-04-04   Modified: 2021-02-19  

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