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格子、保型形式とK3曲面、エンリケス曲面の研究

Research Project

Project/Area Number 20H00112
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 11:Algebra, geometry, and related fields
Research InstitutionNagoya University

Principal Investigator

金銅 誠之  名古屋大学, 多元数理科学研究科, 名誉教授 (50186847)

Co-Investigator(Kenkyū-buntansha) 島田 伊知朗  広島大学, 先進理工系科学研究科(理), 教授 (10235616)
尾高 悠志  京都大学, 理学研究科, 准教授 (30700356)
松本 雄也  東京理科大学, 創域理工学部数理科学科, 講師 (50773628)
馬 昭平  東京工業大学, 理学院, 准教授 (80633255)
Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥34,060,000 (Direct Cost: ¥26,200,000、Indirect Cost: ¥7,860,000)
Fiscal Year 2024: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2023: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2022: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2021: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2020: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
KeywordsK3曲面 / Enriques曲面 / モジュライ空間 / 保型形式 / 自己同型群 / Kummer曲面 / コンパクト化 / 混合ホッジ構造 / 実直線配置 / 有界対称領域 / エンリケス曲面 / 格子理論 / モジュラー形式 / 格子 / 特異点 / Coble曲面 / 自己同型 / モジュライ / 小平次元 / 商特異点
Outline of Research at the Start

2017年に8次元および24次元の球充填問題が解決されたことは記憶に新しい。定値の格子の一つであるLeech格子が24次元の解を与えている。この問題は3次元以下を除けば未解決であったことを考えれば、24次元の世界が特に興味深いと考えられる。一方、K3曲面のオイラー数は24であり、全コホモロジー群は符号が (4,20) の不定値の24次元格子である。不思議なことにK3曲面の幾何学と定値の24次元格子とは相性が良いことが分かってきた。K3曲面やその商であるエンリケス曲面の幾何学と24次元格子が深く関係していると考えられる。この観点を取り入れ、総合的にK3曲面、エンリケス曲面の研究を進める。

Outline of Annual Research Achievements

代表者は標数2のKummer曲面の自己同型群の生成元を求め、I. Dolgachev氏との共同研究では標数2のKummer曲面のbitangent linesのなす曲面を決定した。またK. Hulek, 前田洋太両氏との共同研究で射影直線上の12点のモジュライ空間(Deligne-Mostow variety)のコンパクト化の性質に関する論文を完成し投稿した。さらにDolgachev氏と執筆してきた著書 Enriques surfaces IIの最終校正を終えた。分担者島田は実直線配置で分岐する平面の二重被覆のトポロジーを調べ実構造から自然に定まる 2-サイクルの交点数を計算した。分担者馬は高次元モジュラー多様体の混合ホッジ構造を研究した。特に、ジーゲル作用素と重さフィルトレーションを関係付け、またいくつかのホッジ成分を計算するスペクトル系列を構成した。さらに、佐藤謙氏と共同でいくつかのK3曲面の族に対して高次チャウサイクルを構成した。分担者尾高は前田洋太氏との共同研究を発表した。これはK3曲面やその他関連する代数多様体のモジュライのコンパクト化にも関わり、特にそのBaily-Borelコンパクト化の双有理的なクラスについて保形形式の応用をもたらすものである。分担者松本はアーベル曲面を-1倍写像で割り特異点を解消して得られる曲面であるKummer曲面を調べた。標数2で超特異である場合を除き,Kummer曲面はK3曲面になり,また例外曲線の本数は16である。標数2の超特異の場合について,適切な条件を満たす16本の曲線から出発することで,非分離的な類似の結果を得て論文として発表した。

Current Status of Research Progress
Current Status of Research Progress

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

Reason

代表者、分担者全てが研究成果を得ている。特に標数2のKummer曲面の研究においては、様々な方向からの研究成果が得られており、またモジュライ空間の研究においてもコンパクト化や保型形式論の視点からの研究成果が得られている。代表者とDolgachev氏が執筆してきた著書 Enriques surfaces IIも最終校正を終え出版の目処が立った点も評価できる。

Strategy for Future Research Activity

これまで通り、代表者が分担者と連絡をとりながら研究を進める。国際、国内会議への参加と講演等を通じて各国の研究者と研究連絡を実施しながら研究を進める。最終年度であり、本研究の集大成と位置付ける著書 Enriques surfaces II (Dolgachev氏との共著)の刊行に全力を注ぐ。また標数2のKummer 曲面の研究においては様々な方向で成果があがってきており、そこにモジュライ的な観点を加えることを試みる。

Report

(5 results)
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (94 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (7 results) Journal Article (35 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 35 results,  Open Access: 16 results) Presentation (50 results) (of which Int'l Joint Research: 18 results,  Invited: 49 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] University of Michigan(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Hannover University(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Michigan(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Michigan(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Bonn University/TU Munchen(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Michigan(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Universitat des Saarlandes(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] A note on construction of the Leech lattice2024

    • Author(s)
      I. Shimada
    • Journal Title

      Discrete Math.

      Volume: 347 Issue: 3 Pages: 113832-113832

    • DOI

      10.1016/j.disc.2023.113832

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coble surfaces in characteristic two2023

    • Author(s)
      Toshiyuki Katsura and Shigeyuki Kondo
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 75 Issue: 4 Pages: 1287-1337

    • DOI

      10.2969/jmsj/87568756

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On Characteristic Polynomials of Automorphisms of Enriques Surfaces2023

    • Author(s)
      Simon Brandhorst, Slawomir Rams, Ichiro Shimada
    • Journal Title

      Publications of the Research Institute for Mathematical Sciences

      Volume: 59 Issue: 3 Pages: 633-656

    • DOI

      10.4171/prims/59-3-7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Special holomorphic tensors on orthogonal modular varieties and applications to the Lang conjecture2023

    • Author(s)
      Shouhei Ma
    • Journal Title

      Mathematische Annalen

      Volume: 366 Issue: 1-2 Pages: 1127-1150

    • DOI

      10.1007/s00208-022-02431-7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fano Shimura varieties with mostly branched cusps2023

    • Author(s)
      Yuji Odaka, Yota Maeda
    • Journal Title

      Springer Proceedings in Mathematics & Statistics(PROMS, volume 409)

      Volume: 409 Pages: 633-664

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] INSEPARABLE MAPS ON Wn-VALUED LOCAL COHOMOLOGY GROUPS OF NONTAUT RATIONAL DOUBLE POINT SINGULARITIES AND THE HEIGHT OF K3 SURFACES2023

    • Author(s)
      Matsumoto Yuya
    • Journal Title

      Journal of Commutative Algebra

      Volume: 15 Issue: 3 Pages: 377-404

    • DOI

      10.1216/jca.2023.15.377

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Degeneration of K3 surfaces with non-symplectic automorphisms2023

    • Author(s)
      Matsumoto Yuya
    • Journal Title

      Rendiconti del Seminario Matematico della Universita di Padova

      Volume: 150 Pages: 227-245

    • DOI

      10.4171/rsmup/123

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Extendability of automorphisms of K3 surfaces2023

    • Author(s)
      Matsumoto Yuya
    • Journal Title

      Mathematical Research Letters

      Volume: 30 Issue: 3 Pages: 821-863

    • DOI

      10.4310/mrl.2023.v30.n3.a9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] μ_{p}- and α_{p}-actions on K3 surfaces in characteristic p2022

    • Author(s)
      Matsumoto Yuya
    • Journal Title

      Journal of Algebraic Geometry

      Volume: 32 Issue: 2 Pages: 271-322

    • DOI

      10.1090/jag/804

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coble surfaces with finite automorphism group2022

    • Author(s)
      Shigeyuki Kondo
    • Journal Title

      Rend. Circ. Mat. Palermo

      Volume: 71 Issue: 2 Pages: 829-864

    • DOI

      10.1007/s12215-021-00646-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fano Shimura varieties with mostly branched cusps2022

    • Author(s)
      Yota Maeda, Yuji Odaka
    • Journal Title

      Birational Geometry, Kahler-Einstein Metrics and Degenerations: Moscow, Shanghai and Pohang, June--November 2019 (Springer Proceedings in Mathematics & Statistics, 409)

      Volume: --

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Degenerated Calabi-Yau varieties with infinite components, moduli compactifications, and limit toroidal structures2022

    • Author(s)
      Yuji Odaka
    • Journal Title

      European Journal of Mathematics

      Volume: 8 Issue: 3 Pages: 1105-1157

    • DOI

      10.1007/s40879-022-00562-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Polystable Log Calabi-Yau Varieties and Gravitational Instantons2022

    • Author(s)
      Yuji Odaka
    • Journal Title

      J. Math. Sci. Univ. Tokyo

      Volume: 29

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Algebra of Borcherds products2022

    • Author(s)
      Shouhei Ma
    • Journal Title

      Transactions of the American Mathematical Society

      Volume: 375 Issue: 6 Pages: 4285-4305

    • DOI

      10.1090/tran/8585

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Unramified cohomology, integral coniveau filtration and Griffiths groups2022

    • Author(s)
      Shouhei Ma
    • Journal Title

      Annals of K-Theory

      Volume: 7 Issue: 2 Pages: 223-236

    • DOI

      10.2140/akt.2022.7.223

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kodaira dimension of universal holomorphic symplectic varieties2022

    • Author(s)
      Shouhei Ma
    • Journal Title

      Journal of the Institute of Mathematics of Jussieu

      Volume: 21 Issue: 6 Pages: 1849-1866

    • DOI

      10.1017/s1474748021000013

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A note on Quebbemann's extremal lattices of rank 64.2022

    • Author(s)
      Ichiro Shimada
    • Journal Title

      J. Theor. Nombres Bordeaux

      Volume: 34

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Automorphism groups of certain Enriques surfaces.2022

    • Author(s)
      Simon Brandhorst, Ichiro Shimada
    • Journal Title

      Found. Comput. Math.

      Volume: 22

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Zariski multiples associated with quartic curves2022

    • Author(s)
      Ichiro Shimada
    • Journal Title

      J. Singul.

      Volume: 24

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ON -ACTIONS ON K3 SURFACES IN POSITIVE CHARACTERISTIC2022

    • Author(s)
      MATSUMOTO YUYA
    • Journal Title

      Nagoya Mathematical Journal

      Volume: 249 Pages: 11-49

    • DOI

      10.1017/nmj.2022.20

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Canonical coverings of Enriques surfaces in characteristic 22022

    • Author(s)
      MATSUMOTO Yuya
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 74 Issue: 3 Pages: 849-872

    • DOI

      10.2969/jmsj/86318631

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Purely inseparable coverings of rational double points in positive characteristic2022

    • Author(s)
      Matsumoto Yuya
    • Journal Title

      Journal of Singularities

      Volume: 24 Pages: 79-95

    • DOI

      10.5427/jsing.2022.24b

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Purely inseparable coverings of rational double points in positive characteristic2022

    • Author(s)
      Yuya Matsumoto
    • Journal Title

      J. Singul.

      Volume: 24

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kummer surfaces associated with group schemes2021

    • Author(s)
      Shigeyuki Kondo, Stefan Schroer
    • Journal Title

      manuscripta mathematica

      Volume: 166 Issue: 3-4 Pages: 323-342

    • DOI

      10.1007/s00229-020-01257-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Coble surfaces with finite automorphism group2021

    • Author(s)
      Shigeyuki Kondo
    • Journal Title

      Rendiconti del Circolo Matematico di Palermo Series 2

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Universal abelian variety and Siegel modular forms2021

    • Author(s)
      Shohei Ma
    • Journal Title

      Algebra Number Theory

      Volume: 15

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Collapsing K3 surfaces, Tropical geometry and Moduli compactifications of Satake, Morgan-Shalen type2021

    • Author(s)
      Odaka, Y., Oshima, Y.
    • Journal Title

      Memoir, Math Society Japan

      Volume: 40

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] PL density invariant for type II degenerating K3 surfaces, Moduli compactification and hyperKahler metrics2021

    • Author(s)
      Odaka, Y.
    • Journal Title

      Nagoya Math. J.

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Classification of Enriques surfaces covered by the supersingular 𝐾3 surface with Artin invariant 1 in characteristic 22021

    • Author(s)
      Shigeyuki Kondo
    • Journal Title

      Journal of the Mathematical Society of Japan

      Volume: 73 Issue: 1 Pages: 301-328

    • DOI

      10.2969/jmsj/81778177

    • NAID

      130007973746

    • ISSN
      0025-5645, 1881-1167, 1881-2333
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Classification of Enriques surfaces with finite automorphism group in characteristic 22020

    • Author(s)
      Toshiyuki Katsura, Shigeyuki Kondo and Gebhard Martin
    • Journal Title

      Algebraic Geometry

      Volume: 7 Pages: 390-459

    • DOI

      10.14231/ag-2020-012

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] K3 surfaces with involution, equivariant analytic torsion, and automorphic forms on the moduli space IV: the structure of invariant2020

    • Author(s)
      Souhei Ma, Ken-Ichi Yoshikawa
    • Journal Title

      Compositio Mathematica

      Volume: 156 Issue: 10 Pages: 1965-2019

    • DOI

      10.1112/s0010437x2000737x

    • NAID

      120007193026

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rational equivalence of cusps2020

    • Author(s)
      Shouhei Ma
    • Journal Title

      Annals of K-Theory

      Volume: 5 Issue: 3 Pages: 395-410

    • DOI

      10.2140/akt.2020.5.395

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enriques involutions on singular K3 surfaces of small discriminants.2020

    • Author(s)
      Shimada, Ichiro, Veniani, Davide Cesare
    • Journal Title

      Ann. Sc. Norm. Super. Pisa

      Volume: 21 Pages: 1667-1701

    • DOI

      10.2422/2036-2145.201902_004

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [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
      2020 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
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Zariski pairs on a cubic surface2024

    • Author(s)
      島田伊知朗
    • Organizer
      日本数学会中四国支部例会, 徳島大学
    • Related Report
      2023 Annual Research Report
  • [Presentation] ベクトル値直交型モジュラー形式2024

    • Author(s)
      馬昭平
    • Organizer
      第三回仙台保型形式小集会 2024/2/3、東北大学
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Mixed Hodge structures of locally symmetric varieties2024

    • Author(s)
      馬昭平
    • Organizer
      Workshop on Complex Geometry in Osaka 2024、大阪大学
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-archimedean (and Arakelov) aspect of Kahler-Einstein metrics and applications to moduli space, Asymptotic behavior of Calabi-Yau metrics and hybrid-type moduli compactification2024

    • Author(s)
      尾高悠志
    • Organizer
      Workshop on Nonarchimedean Geometry and Related Fields, 京都大学
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] K3曲面の周期 ー超越格子を巡ってー2023

    • Author(s)
      金銅誠之
    • Organizer
      ENCOUNTER with MATHEMATICS, 中央大学
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Kummer surfaces and quadric line complexes in characteristic two,2023

    • Author(s)
      Shigeyuki Kondo
    • Organizer
      Aspect of Algebraic Geometry, Cetraro, Italy
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] An application of Borcherds theory of automorphic forms to algebraic geometry2023

    • Author(s)
      Shigeyuki Kondo
    • Organizer
      Group, Lie and Number Theory Seminar - Department of Mathematics, University of Michigan
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Topology of a double plane branching along a real line arrangement2023

    • Author(s)
      Ichiro Shimada
    • Organizer
      Seminar talk at Dalat University, Vietnam
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Vanishing cycles of a double plane branching along a real line arrangement2023

    • Author(s)
      Shimada Ichiro
    • Organizer
      Workshop "Topology of Singularities and Related Topics", Quy Nhon, Vietnam
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Conway theory for algebraic geometers Working2023

    • Author(s)
      Shimada Ichiro
    • Organizer
      Workshop on Calabi--Yau Varieties and Related Topics, Hokkaido University
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] K3曲面の自己同型群の計算について2023

    • Author(s)
      島田伊知朗
    • Organizer
      杉本代数セミナー、大阪公立大学杉本キャンパス
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] A survey on developments around K-stability I, II2023

    • Author(s)
      尾高悠志
    • Organizer
      第29回複素幾何シンポジウム(金沢)2023
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Kummer曲面の非分離類似2023

    • Author(s)
      松本雄也
    • Organizer
      野田代数幾何学シンポジウム2023, 東京理科大学
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Enriques 曲面に始まり Kummer 曲面で終わる2023

    • Author(s)
      Shiegyuki Kondo
    • Organizer
      K3, Enriques surfaces, and related topics, Nagoya University
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Collapsing of compact hyperKahler metrics, PL limit density function on intervals, and moduli compactification2023

    • Author(s)
      Yuji Odaka
    • Organizer
      解析幾何セミナー   パリ第6大学
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] K3曲面のモジュライ空間の標準的コンパクト化について2023

    • Author(s)
      Yuji Odaka
    • Organizer
      K3, Enriques surfaces, and related topics, Nagoya University
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 混合ホッジ構造とジーゲル作用素2023

    • Author(s)
      Shohei Ma
    • Organizer
      K3, Enriques surfaces, and related topics, Nagoya University
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] あるK3曲面の自己同型群について2023

    • Author(s)
      Ichiro Shimada
    • Organizer
      K3, Enriques Surfaces, and Related Topics, 名古屋大学多元数理研究科
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Inseparable analogue of Kummer K3 surfaces2023

    • Author(s)
      Yuya Matsumoto
    • Organizer
      K3, Enriques Surfaces, and Related Topics, 名古屋大学
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Inseparable analogue of Kummer K3 surfaces2023

    • Author(s)
      Yuya Matsumoto
    • Organizer
      正標数体上の代数多様体、および連接層の導来圏に関するワークショップ
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Kummer surfaces and quadric line complexes in characteristic two2022

    • Author(s)
      Shigeyuki Kondo
    • Organizer
      Algebraic Geometry in Hannover on occasion of Klaus Hulek's 70th Birthday
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Kummer surfaces and quadratic line complexes in characteristic 22022

    • Author(s)
      Shigeyuki Kondo
    • Organizer
      代数学シンポジウム, 京都大学数理解析研究所
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] On Moduli Compactifications, K-Stability and Canonical Metrics2022

    • Author(s)
      Yuji Odaka
    • Organizer
      OPPENHEIM lecture ワークショップ, RECENT PROGRESS IN ALGEBRAIC GEOMETRY, シンガポール国立大学
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Moduli compactifications and K-stability (survey)2022

    • Author(s)
      Yuji Odaka
    • Organizer
      Rationality, Moduli Spaces, and Related Topics 名古屋大学
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mordell-Weil groups of a certain K3 surface2022

    • Author(s)
      Ichiro Shimada
    • Organizer
      Recent Development in Algebraic Geometry, National University of Singapore
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The automorphism group of a K3 surface birational to a double plane2022

    • Author(s)
      Ichiro Shimada
    • Organizer
      Real Aspects of Geometry, CIRM, Luminy, France
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Inseparable analogue of Kummer K3 surfaces2022

    • Author(s)
      Yuya Matsumoto
    • Organizer
      p-adic cohomology and arithmetic geometry 2022, Tohoku Univ.
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Coble surfaces with finite automorphism group2022

    • Author(s)
      Shigeyuki Kondo
    • Organizer
      Algebraic Geometry Seminar, Universitat des Saarlandes (Zoom meeting)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Automorphism groups of Enriques surfaces (joint work with Simon Brandhorst)2022

    • Author(s)
      Ichiro Shimada
    • Organizer
      Japanese-European Symposium on Symplectic Varieties and Moduli Spaces -- Sixth Edition March 16, 2022 Zoom
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ボーチャーズ積の代数2022

    • Author(s)
      馬昭平
    • Organizer
      仙台保型形式ミニ集会、東北大学
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 正標数2次元特異点に関する話題2022

    • Author(s)
      松本雄也
    • Organizer
      代数学の萌芽, 東京理科大学(オンライン)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 有限自己同型群を持つ Coble 曲面の分類 2021/10/292021

    • Author(s)
      金銅誠之
    • Organizer
      城崎代数幾何シンポジウム2021 (Zoom meeting)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Computation of automorphism groups of Enriques surfaces (joint work with Simon Brandhorst)2021

    • Author(s)
      Ichiro Shimada
    • Organizer
      ODTU-Bilkent Algebraic Geometry Seminar December 17, 2021 Zoom
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Computation of the nef cone and the automorphism group of an Enriques surface (joint work with Simon Brandhorst)2021

    • Author(s)
      Ichiro Shimada
    • Organizer
      Online Workshop on Calabi-Yau Varieties and Related Topics October 14, 2021 Zoom
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] カスプと有理同値2021

    • Author(s)
      馬昭平
    • Organizer
      複素解析セミナー、東京大学(オンライン)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] カスプと有理同値2021

    • Author(s)
      馬昭平
    • Organizer
      代数幾何セミナー、大阪大学(オンライン)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] カスプと有理同値2021

    • Author(s)
      馬昭平
    • Organizer
      代数学シンポジウム、早稲田大学(オンライン)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Torsors over the Rational Double Points in characteristic p2021

    • Author(s)
      松本雄也
    • Organizer
      第2回 超ケーラー多様体のモジュライとその周辺, 京都大学(オンライン)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Torsors over the Rational Double Points2021

    • Author(s)
      松本雄也
    • Organizer
      野田代数幾何学ワークショップ2021, 東京理科大学
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Linearly Reductive Quotient Singularities2021

    • Author(s)
      松本雄也
    • Organizer
      代数幾何学セミナー, 大阪大学(オンライン)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] K3 曲面のモジュライの代数幾何的コンパクト化の最近の進展について2021

    • Author(s)
      尾高 悠志
    • Organizer
      城崎代数幾何シンポジウム2021 (Zoom meeting)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 有限自己同型群を持つ Coble 曲面 2021/2/222021

    • Author(s)
      金銅誠之
    • Organizer
      森重文先生古希講演会 Zoom meeting
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Universal holomorphic symplectic varieties and Borcherds products2021

    • Author(s)
      Shohei Ma
    • Organizer
      Moduli spaces and Modular forms, MFO Oberwolfach (Germany)(オンライン)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Linearly Reductive Quotient Singularities2021

    • Author(s)
      Yuya Matsumoto
    • Organizer
      代数学とその応用, 東北大学
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Enriques surfaces and Leech lattice2020

    • Author(s)
      Shigeyuki Kondo
    • Organizer
      Algebraic geometry and arithmetic: a conference on the occasion of V.V. Nikulin 70th birthday 2020/10/23, Zoom meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Enriques surfaces and Leech lattice2020

    • Author(s)
      Shigeyuki Kondo
    • Organizer
      Japanese-European symposium on symplectic varieties and moduli spaces 2020/9/7,9/10 Zoom meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 向井モデルとボーチャーズ積2020

    • Author(s)
      馬昭平
    • Organizer
      東京工業大学幾何セミナー(オンライン)
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Mukai models and Borcherds products2020

    • Author(s)
      馬昭平
    • Organizer
      城崎代数幾何シンポジウム(オンライン)2020
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Derivations on K3 surfaces in positive characteristic,2020

    • Author(s)
      Yuya Matsumoto
    • Organizer
      代数学シンポジウム2020, オンライン
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Linearly Reductive Quotient Singularities2020

    • Author(s)
      Yuya Matsumoto
    • Organizer
      東大京大代数幾何セミナー, オンライン
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Remarks] Shigeyuki Kondo

    • URL

      http://www.math.nagoya-u.ac.jp/~kondo/

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Funded Workshop] Rationality, Moduli Spaces, and Related Topics, Nagoya University.2022

    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-12-25  

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