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Computational study of algebraic geometry

Research Project

Project/Area Number 16H03926
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Algebra
Research InstitutionHiroshima University

Principal Investigator

Shimada Ichiro  広島大学, 先進理工系科学研究科(理), 教授 (10235616)

Co-Investigator(Kenkyū-buntansha) 木村 俊一  広島大学, 先進理工系科学研究科(理), 教授 (10284150)
宮谷 和尭  東京電機大学, 未来科学部, 助教 (10711145)
高橋 宣能  広島大学, 先進理工系科学研究科(理), 准教授 (60301298)
石井 亮  広島大学, 理学研究科, 教授 (10252420)
Project Period (FY) 2016-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2016: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
KeywordsK3曲面 / エンリケス曲面 / 双曲格子 / 計算機 / カンドル / p進微分方程式 / 自己同型群 / p-進微分方程式 / 格子理論 / アルゴリズム / 格子 / 基本群 / 代数幾何学 / 計算機アルゴリズム
Outline of Final Research Achievements

We wrote various computational procedures for computations in lattice-theory,and applied them to many geometric problems in algebraic geometry. In particular, we prepare several programs to perform Borcherds method,which calculate certain subgroups of orthogonal groups of hyperbolic lattices.Applying them, we calculated automorphism groups of several K3 surfaces and Enriques surfaces,and distilled some geometric data of these surfaces.We also made basic data such as the list of connected components of the moduli of elliptic K3 surfaces with given combinatorial data,or the list of combinations of rational double points that can appear on Enriques surfaces.

Academic Significance and Societal Importance of the Research Achievements

K3曲面およびエンリケス曲面は代数曲面の分類において重要なクラスをなす.さらにK3曲面は数学のみならず理論物理学においても重要な役割を果たす.したがってこれらの曲面の基礎的なデータを求めることは重要な仕事であるが,より大切なことは,データを作成するための方法を整備し,必要な時に必要なデータを各研究者が自分で計算機を用いて取得することができる環境をつくることである.本研究の成果は,これらの計算の特に格子理論的な側面に対して,この目標の実現に資するものである.

Report

(5 results)
  • 2020 Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (48 results)

All 2021 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (18 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 18 results,  Open Access: 12 results,  Acknowledgement Compliant: 4 results) Presentation (19 results) (of which Int'l Joint Research: 17 results,  Invited: 18 results) Remarks (5 results) Funded Workshop (3 results)

  • [Int'l Joint Research] Vietnam National University of Science(ベトナム)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Johannes Gutenberg-Universitaet/Leibniz Universitaet Hannover(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Bilkent University/Galatasaray University(トルコ)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Log BPS numbers of log Calabi-Yau surfaces2021

    • Author(s)
      Jinwon Choi, Michel van Garrel, Sheldon Katz, Nobuyoshi Takahashi
    • Journal Title

      Transactions of the American Mathematical Society

      Volume: 374 Issue: 1 Pages: 687-732

    • DOI

      10.1090/tran/8234

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rational double points on Enriques surfaces2021

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Sci. China Math.

      Volume: 64 Issue: 4 Pages: 665-690

    • DOI

      10.1007/s11425-019-1796-x

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 15-nodal quartic surfaces. Part II: The automorphism group2020

    • Author(s)
      Igor Dolgachev, Ichiro Shimada
    • Journal Title

      Rendiconti del Circolo Matematico di Palermo Series 2

      Volume: - Issue: 3 Pages: 1165-1191

    • DOI

      10.1007/s12215-019-00464-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The elliptic modular surface of level 4 and its reduction modulo 32020

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Annali di Matematica Pura ed Applicata

      Volume: - Issue: 4 Pages: 1457-1489

    • DOI

      10.1007/s10231-019-00927-9

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Local BPS Invariants: Enumerative Aspects and Wall-Crossing2019

    • Author(s)
      Choi Jinwon、van Garrel Michel、Katz Sheldon、Takahashi Nobuyoshi
    • Journal Title

      International Mathematics Research Notices

      Volume: to appear Issue: 17 Pages: 5450-5475

    • DOI

      10.1093/imrn/rny171

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On an Enriques surface associated with a quartic Hessian surface2019

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Canad. J. Math.

      Volume: 71 Issue: 1 Pages: 213-246

    • DOI

      10.4153/cjm-2018-022-7

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Connected components of the moduli of elliptic K3 surfaces.2018

    • Author(s)
      I. Shimada
    • Journal Title

      Michigan Math. J.

      Volume: 67 Issue: 3 Pages: 511-559

    • DOI

      10.1307/mmj/1528941621

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] On Edge's correspondence associated with dot 2222018

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Eur. J. Math.

      Volume: 4 Issue: 1 Pages: 399-412

    • DOI

      10.1007/s40879-017-0183-z

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] An even extremal lattice of rank 642018

    • Author(s)
      I. Shimada
    • Journal Title

      J. Number Theory

      Volume: 185 Pages: 1-15

    • DOI

      10.1016/j.jnt.2017.10.028

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Numerical boundedness on rational equivalences of zero cycles on algebraic varieties with trivial CH_02018

    • Author(s)
      Kimura, Shun-Ichi and Sheng, Mao and Zhang, Mingwei
    • Journal Title

      Asian J. Math.

      Volume: 22 Issue: 3 Pages: 569-576

    • DOI

      10.4310/ajm.2018.v22.n3.a9

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Connected components of the moduli of elliptic K3 surfaces2018

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Michigan Math. J. (accepted)

      Volume: -

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Holes of the Leech lattice and the projective models of K3 surfaces2017

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Math. Proc. Cambridge Philos. Soc.

      Volume: 163 Issue: 1 Pages: 125-143

    • DOI

      10.1017/s030500411600075x

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Holes of the Leech lattice and the projective models of K3 surfaces2017

    • Author(s)
      Shimada, Ichiro
    • Journal Title

      Math. Proc. Cambridge Philos. Soc.

      Volume: -

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] On a smooth quartic surface containing 56 lines which is isomorphic as a K3 surface to the Fermat quartic2016

    • Author(s)
      Shimada, Ichiro; Shioda, Tetsuji
    • Journal Title

      manuscripta mathematica

      Volume: - Issue: 1-2 Pages: 279-297

    • DOI

      10.1007/s00229-016-0886-3

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The automorphism groups of certain singular K3 surfaces and an Enriques surface2016

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Progr. Math.

      Volume: 315 Pages: 297-343

    • DOI

      10.1007/978-3-319-29959-4_12

    • ISBN
      9783319299587, 9783319299594
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the topology of projective subspaces in complex Fermat varieties2016

    • Author(s)
      Degtyarev, Alex; Shimada, Ichiro
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 68 Issue: 3 Pages: 975-996

    • DOI

      10.2969/jmsj/06830975

    • NAID

      130005166133

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Automorphisms of supersingular K3 surfaces and Salem polynomials2016

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Experimental Mathematics

      Volume: 25 Issue: 4 Pages: 389-398

    • DOI

      10.1080/10586458.2015.1073641

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Quandle varieties, generalized symmetric spaces and \varphi-spaces2016

    • Author(s)
      Takahashi, Nobuyoshi
    • Journal Title

      Transformation Groups

      Volume: 21 Issue: 2 Pages: 555-576

    • DOI

      10.1007/s00031-015-9351-8

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] カンドル空間上の加群と Lie-山口代数の表現2020

    • Author(s)
      Nobuyoshi Takahashi
    • Organizer
      カンドルと対称空間
    • Related Report
      2019 Annual Research Report
  • [Presentation] Enriques involutions on singular K3 surfaces of small discriminants (joint work with Davide Cesare Veniani)2019

    • Author(s)
      Ichiro Shimada
    • Organizer
      Arithmetic and Algebraic Geometry 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The elliptic modular surface of level 4 and its reduction modulo 32018

    • Author(s)
      Ichiro Shimada
    • Organizer
      Algebraic Geometry in Positive Characteristic and Related Topics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The elliptic modular surface of level 4 and its reduction modulo 32018

    • Author(s)
      Ichiro Shimada
    • Organizer
      Working Workshop on Calabi-Yau Varieties and Related Topics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On an Enriques surface associated with a quartic Hessian surface2017

    • Author(s)
      Ichiro Shimada
    • Organizer
      Algebraic Geometry Conference
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2017-03-29
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On an Enriques surface associated with a quartic Hessian surface2017

    • Author(s)
      Ichiro Shimada
    • Organizer
      Topology of Singularities
    • Place of Presentation
      Vietnam Institute for Advanced Study in Mathematics, Vietnam
    • Year and Date
      2017-02-21
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] G-constellations and the maximal resolution of a quotient surface singularity2017

    • Author(s)
      Akira Ishii
    • Organizer
      Moduli spaces of sheaves and related topics
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2017-02-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] An even extremal lattice of rank 642017

    • Author(s)
      Ichiro Shimada
    • Organizer
      東北大学情報科学研究科, 組合せ論セミナー
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] An Enriques involution of the Fermat quartic surface in characteristic 32017

    • Author(s)
      Ichiro Shimada
    • Organizer
      K3 surfaces and Realted Topics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rational double points on complex Enriques surfaces2017

    • Author(s)
      Ichiro Shimada
    • Organizer
      Geometry and Representation Theory Seminar , Queen's University
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rational double points on complex Enriques surfaces2017

    • Author(s)
      Ichiro Shimada
    • Organizer
      Workshop on Calabi-Yau manifolds: Arithmetics, Geometry and Physics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Automorphisms of K3 surfaces and Enriques surfaces2017

    • Author(s)
      Ichiro Shimada
    • Organizer
      Hakodate workshop on arithmetic geometry 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On an Enriques surface associated with a quartic Hessian surface2017

    • Author(s)
      Ichiro Shimada
    • Organizer
      Oberseminar Algebraische und Arithmetische Geometrie, Leibniz Universit"at Hannover
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Connected components of the moduli of elliptic K3 surfaces2016

    • Author(s)
      Ichiro Shimada
    • Organizer
      The 10th Arithmetic and Algebraic Geometry
    • Place of Presentation
      The University of Tokyo
    • Year and Date
      2016-12-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Connected components of the moduli of elliptic K3 surfaces2016

    • Author(s)
      Ichiro Shimada
    • Organizer
      The 4th Franco-Japanese-Vietnamese Singularities
    • Place of Presentation
      University Savoie Mont Blanc, France
    • Year and Date
      2016-11-09
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rationality of Motivic Chow Series modulo infinitesimal A^1-homotopy2016

    • Author(s)
      Shun-ichi Kimura
    • Organizer
      The first congress of Algebra Geometry of Mexico
    • Place of Presentation
      Oaxaca, Mexico
    • Year and Date
      2016-10-05
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Dimer models with group actions2016

    • Author(s)
      Akira Ishii
    • Organizer
      Categorical and analytic invariants in Algebraic geometry 3
    • Place of Presentation
      Higher School of Economics, Moscow, Russia
    • Year and Date
      2016-09-12
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Introduction to the McKay correspondence and Artin-Verdier theory2016

    • Author(s)
      Akira Ishii
    • Organizer
      Non-commutative crepant resolutions, Ulrich modules and generalizations of the McKay correspondence
    • Place of Presentation
      京都大学数理解析研究所
    • Year and Date
      2016-06-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A smooth quartic surface containing 56 lines2016

    • Author(s)
      Ichiro Shimada
    • Organizer
      Algebra, geometry and topology of singularities
    • Place of Presentation
      Galatasaray University, Turk
    • Year and Date
      2016-05-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] Computational data of K3 surfaces

    • URL

      http://www.math.sci.hiroshima-u.ac.jp/~shimada/K3andEnriques.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] K3 surfaces

    • URL

      http://www.math.sci.hiroshima-u.ac.jp/~shimada/K3.html

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
  • [Remarks] Lattices

    • URL

      http://www.math.sci.hiroshima-u.ac.jp/~shimada/Leech.html

    • Related Report
      2016 Annual Research Report
  • [Remarks] Ichiro Shimada

    • URL

      http://www.math.sci.hiroshima-u.ac.jp/~shimada/index.html

    • Related Report
      2016 Annual Research Report
  • [Remarks] Branched coverings

    • URL

      http://www.math.sci.hiroshima-u.ac.jp/branched/index2017.html

    • Related Report
      2016 Annual Research Report
  • [Funded Workshop] Branched Coverings, Degenerations, and Related Topics 20192019

    • Related Report
      2018 Annual Research Report
  • [Funded Workshop] Branched Coverings, Degenerations, and Related Topics 20182018

    • Related Report
      2017 Annual Research Report
  • [Funded Workshop] Branched Coverings, Degenerations, and Related Topics 20172017

    • Place of Presentation
      Tohoku Gakuin University, Tagajo campus
    • Year and Date
      2017-03-07
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2022-01-27  

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