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2019 Fiscal Year Annual Research Report

格子、保型形式とモジュライ空間の総合的研究

Research Project

Project/Area Number 15H05738
Research InstitutionNagoya University

Principal Investigator

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

Co-Investigator(Kenkyū-buntansha) 島田 伊知朗  広島大学, 理学研究科, 教授 (10235616)
小木曽 啓示  東京大学, 大学院数理科学研究科, 教授 (40224133)
伊山 修  名古屋大学, 多元数理科学研究科, 教授 (70347532)
馬 昭平  東京工業大学, 理学院, 准教授 (80633255)
菅野 浩明  名古屋大学, 多元数理科学研究科, 教授 (90211870)
Project Period (FY) 2015-05-29 – 2020-03-31
Keywords格子 / 保型形式 / モジュライ空間 / K3曲面 / エンリケス曲面 / カラビ・ヤウ多様体 / マシュー・ムーンシャイン
Outline of Annual Research Achievements

標数2のクンマー曲面は未知の部分が多いが、直積型の具体的な構成と特徴付けを行った。Leech 格子を用いたK3曲面の自己同型群の研究が有用であることは知られていたが、この方法をエンリケス曲面の場合に用いることに成功し17種類の多面体を発見した。この多面体を用いることでエンリケス曲面の自己同型群を統一的に調べることが可能になり,今後の研究が期待される。自己同型群が離散的かつ非有限生成であり、かつ実形式を同型を除き無限個有する3以上の任意次元の滑らかな複素有理多様体の存在を明示的に示した。この結果と先行結果により、この問題で最も難しい場合は、(当初の予想通り)有理曲面の場合であることも浮き彫りにできた。符号(2,19)の直交群に関する一般ウェイトのカスプ形式が点つきK3曲面のモジュライ空間上の標準形式と対応することを証明した。特に種数20以下で、ボーチャーズ積を用いた構成と向井モデルを用いた幾何学的議論ではさみこむことで、小平次元の変わり目を調べた。これを正則シンプレクティック多様体に対しても一般化した。Ding-庵原-三木代数の絡み作用素に関する組み合わせ論および表現論的性質を研究した。とくにDIM 代数の特徴を最もよく反映しているMacMahon 表現に対して、絡み作用素を構成し,その交換関係から定まる R 行列を計算した。また, DIM 代数の絡み作用素の4点関数が有理表現に対する Hopf 絡み目のホモロジー的量子不変量を正しく再現するかどうか確認した。2次元の単純特異点(Du Val特異点)が有限表現型であることは古典的事実だが、この3次元類似をcDV特異点に対して与えた。自己準同型環がCohen-Macaulayとなるような反射的加群をmodifyingと呼ぶが、cDV特異点のmodifying加群から、拡大Dynkin型の部分Tits cone内の格子点への単射を構成し、孤立特異点であれば全単射となることを示した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (66 results)

All 2021 2020 2019 Other

All Int'l Joint Research (6 results) Journal Article (30 results) (of which Int'l Joint Research: 22 results,  Peer Reviewed: 29 results,  Open Access: 5 results) Presentation (25 results) (of which Int'l Joint Research: 19 results,  Invited: 25 results) Book (1 results) Remarks (1 results) Funded Workshop (3 results)

  • [Int'l Joint Research] University of Glasgow/University of East Anglia(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      University of Glasgow/University of East Anglia
  • [Int'l Joint Research] University of Toronto(カナダ)

    • Country Name
      CANADA
    • Counterpart Institution
      University of Toronto
  • [Int'l Joint Research] ミュンスター大学/ジュッセルドルフ大学/Saarland University(ドイツ)

    • Country Name
      GERMANY
    • Counterpart Institution
      ミュンスター大学/ジュッセルドルフ大学/Saarland University
  • [Int'l Joint Research] Uppsala University(スウェーデン)

    • Country Name
      SWEDEN
    • Counterpart Institution
      Uppsala University
  • [Int'l Joint Research] Jagiellonian University(ポーランド)

    • Country Name
      POLAND
    • Counterpart Institution
      Jagiellonian University
  • [Int'l Joint Research]

    • # of Other Countries
      2
  • [Journal Article] Minimum positive entropy of complex Enriques surface automorphisms2021

    • Author(s)
      K. Oguiso, X. Yu
    • Journal Title

      Duke Math. J.

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] K3 surfaces with involution, equivariant analytic torsion, and automorphic forms on the moduli space IV2021

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

      Compositio Mathematica

      Volume: - Pages: -

    • Peer Reviewed
  • [Journal Article] Classification of Enriques surfaces with finite automorphism groups in characteristic 22020

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

      Algebraic Geometry

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Classification of Enriques surfaces covered by the supersingular $K3$ surface with Artin invariant 1 in characteristic 22020

    • Author(s)
      Shigeyuki Kondo
    • Journal Title

      J. Math. Soc. Japan

      Volume: - Pages: -

    • Peer Reviewed
  • [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: - Pages: -

    • DOI

      DOI: 10.1007/s12215-019-00464-7

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enriques involutions on singular K3 surfaces of small discriminants2020

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

      the Annali della Scuola Normale di Pisa - Classe di Scienze

      Volume: - Pages: -

    • 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: - Pages: -

    • DOI

      doi.org/10.1007/s10231-019-00927-9

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] No cohomologically trivial non-trivial automorphism of generalized Kummer manifolds2020

    • Author(s)
      K. Oguiso
    • Journal Title

      Nagoya Math. J.

      Volume: - Pages: -

    • DOI

      doi.org/10.1017/nmj.2018.29

    • Peer Reviewed
  • [Journal Article] Nef line bundles on Calabi-Yau threefolds, I2020

    • Author(s)
      V. Lazic, K. Oguiso, Th. Peternell
    • Journal Title

      Int. Math. Res. Not.

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] d-representation-finite self-injective algebras2020

    • Author(s)
      E. Darpo, O. Iyama
    • Journal Title

      Adv. Math.

      Volume: 362 Pages: -

    • DOI

      DOI: 10.1016/j.aim.2019.106932

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Gorenstein modifications and Q-Gorenstein rings2020

    • Author(s)
      H. Dao, O. Iyama, R. Takahashi, M. Wemyss
    • Journal Title

      J. Algebraic Geom.

      Volume: - Pages: -

    • DOI

      doi.org/10.1090/jag/760

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Representation theory of Geigle-Lenzing complete intersections2020

    • Author(s)
      M. Herschend, O. Iyama, H. Minamoto, S. Oppermann
    • Journal Title

      Mem. Amer. Math. Soc.

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Classifying $\tau$-tilting modules over the Auslander algebra of $K[x]/(x^n)$2020

    • Author(s)
      O. Iyama, X. Zhang
    • Journal Title

      J. Math. Soc. Japan

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quotients of triangulated categories and Equivalences of Buchweitz, Orlov and Amiot--Guo--Keller,2020

    • Author(s)
      O. Iyama, D. Yang,
    • Journal Title

      Amer. J. Math.

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Higher preprojective algebras, Koszul algebras and superpotentials2020

    • Author(s)
      J. Grant, O. Iyama
    • Journal Title

      Compos. Math.

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tilting theory for Gorenstein rings in dimension one2020

    • Author(s)
      R. Buchweitz, O. Iyama, K. Yamaura
    • Journal Title

      Forum Math. Sigma

      Volume: - Pages: -

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On an Enriques surface associated with a quartic Hessian surface.2019

    • Author(s)
      Ichiro Shimada
    • Journal Title

      Canad. J. Math.

      Volume: 71 Pages: 213--246

    • DOI

      doi.org/10.4153/CJM-2018-022-7

    • Peer Reviewed / Open Access
  • [Journal Article] Automorphism groups of smooth quintic threefolds2019

    • Author(s)
      K. Oguiso, X. Yu
    • Journal Title

      Asian J. Math.

      Volume: 23 Pages: 201--256

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A few explicit examples of complex dynamics of inertia groups on surfaces - a question of Professor Igor Dolgachev2019

    • Author(s)
      K. Oguiso
    • Journal Title

      Transform. Groups

      Volume: 24 Pages: 545--561

    • DOI

      doi.org/10.1007/s00031-018-9473-x

    • Peer Reviewed
  • [Journal Article] A surface with discrete and nonfinitely generated automorphism group2019

    • Author(s)
      T.-C. Dinh, K. Oguiso
    • Journal Title

      Duke Math. J.

      Volume: 168 Pages: 941--966

    • DOI

      doi:10.1215/00127094-2018-0054

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Pisot units, Salem numbers, and higher dimensional projective manifolds with primitive automorphisms of positive entropy2019

    • Author(s)
      K. Oguiso
    • Journal Title

      Int. Math. Res. Not.

      Volume: 2019 Pages: 1373--1400

    • DOI

      doi.org/10.1093/imrn/rnx142

    • Peer Reviewed
  • [Journal Article] Modular forms of weight 3m and elliptic modular surface2019

    • Author(s)
      Shouhei Ma
    • Journal Title

      Proceedings of the Japan Academy, Series A

      Volume: 95 Pages: 31--36

    • DOI

      doi:10.3792/pjaa.95.31

  • [Journal Article] Quasi-pullback of Borcherds products2019

    • Author(s)
      Shouhei Ma
    • Journal Title

      Bulletin of the London Mathematical Society

      Volume: 51 Pages: 1061-1078

    • DOI

      doi: 10.1112/blms.12287

    • Peer Reviewed
  • [Journal Article] The MacMahon R-matrix2019

    • Author(s)
      H. Awata, H. Kanno, A. Mironov, A. Morozov, K. Suetake and Y. Zenkevich
    • Journal Title

      JHEP

      Volume: 1904 Pages: 097

    • DOI

      doi: 10.1007/JHEP04(2019)097

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Can tangle calculus be applicable to hyperpolynomials2019

    • Author(s)
      H. Awata, H. Kanno, A. Mironov and A. Morozov
    • Journal Title

      Nucl. Phys.

      Volume: 949 Pages: 114816

    • DOI

      doi.org/10.1016/j.nuclphysb.2019.114816

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Auslander-Gorenstein algebras from Serre-formal algebras via replication2019

    • Author(s)
      A. Chan, O. Iyama, R. Marczinzik
    • Journal Title

      Adv. Math.

      Volume: 345 Pages: 222--262

    • DOI

      DOI: 10.1016/j.aim.2019.01.010

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] tau-tilting finite algebras, bricks and $g$-vectors2019

    • Author(s)
      L. Demonet, O. Iyama, G. Jasso
    • Journal Title

      Int. Math. Res. Not.

      Volume: 2019 Pages: 852--892

    • DOI

      DOI: 10.1093/imrn/rnx135

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Noncommutative resolutions using syzygies2019

    • Author(s)
      H. Dao, O. Iyama, S. Iyengar, R. Takahashi, M. Wemyss, Y. Yoshino
    • Journal Title

      Bull. Lond. Math. Soc.

      Volume: 51 Pages: 43--48

    • DOI

      DOI: 10.1112/blms.12210

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Tilting modules over Auslander-Gorenstein algebras2019

    • Author(s)
      O. Iyama, X. Zhang
    • Journal Title

      Pacific J. Math.

      Volume: 298 Pages: 399--416

    • DOI

      DOI: 10.2140/pjm.2019.298.399

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Weighted Projective Lines and Rational Surface Singularities2019

    • Author(s)
      O. Iyama, M. Wemyss
    • Journal Title

      Epijournal Geom. Algebrique

      Volume: 3 Pages: 1--51

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Enriques surfaces and the Leech lattice (after Brandhorst and Shimada)2020

    • Author(s)
      金銅誠之
    • Organizer
      第15回代数・解析・幾何学セミナー 2020/2/14, 鹿児島大学理学部
    • Invited
  • [Presentation] Projective rational manifolds with non-finitely generated discrete automorphism group and infinitely many real forms2020

    • Author(s)
      K. Oguiso
    • Organizer
      Complex Dynamics, CIRM, Luminy, France
    • Int'l Joint Research / Invited
  • [Presentation] Two most algebraic K3曲面とKummer曲面2019

    • Author(s)
      金銅誠之
    • Organizer
      Encounter with Mathematics, K3曲面 2019/12/7, 中央大学理工学部
    • Invited
  • [Presentation] 格子とK3曲面--24次元の世界--2019

    • Author(s)
      金銅誠之
    • Organizer
      Encounter with Mathematics, K3曲面 2019/12/7, 中央大学理工学部
    • Invited
  • [Presentation] Be fascinated by Enriques surfaces2019

    • Author(s)
      金銅誠之
    • Organizer
      Mathematical Colloquium, Dusseldorf University
    • Int'l Joint Research / Invited
  • [Presentation] Computation of automorphism groups of K3 and Enriques surfaces2019

    • Author(s)
      Ichiro Shimada
    • Organizer
      代数学シンポジウム(東北大学)
    • Invited
  • [Presentation] On wild automorphisms of complex projective varieties2019

    • Author(s)
      K. Oguiso
    • Organizer
      Degenerations, algebraic surfaces and related topics, Kobe University, Kobe, Japan.
    • Invited
  • [Presentation] Non-finite generation problem of the discrete automorphism groups of smooth projective varieties2019

    • Author(s)
      K. Oguiso
    • Organizer
      Differential Systems: from theory to computer mathematics, in honor of Prof. Katsunori Iwasaki's and Prof. Nobuki Takayama's 60th birthdays, U. Tokyo, Tokyo, Japan
    • Int'l Joint Research / Invited
  • [Presentation] Finite generation problem of the discrete automorphism group of a smooth projective variety and related problems2019

    • Author(s)
      K. Oguiso
    • Organizer
      NCTS Mini-courses in Algebraic Geometry, four 100 minute lectures, NCTS, Taipei, Taiwan
    • Int'l Joint Research / Invited
  • [Presentation] Finite generation problem of the discrete automorphism group of a smooth projective variety2019

    • Author(s)
      K. Oguiso
    • Organizer
      Lecture Series in Algebraic Geometry, Morningside Center of Mathematics, Beijing, China
    • Int'l Joint Research / Invited
  • [Presentation] A surface in odd characteristic with discrete and non-finitely generated automorphism group2019

    • Author(s)
      K. Oguiso
    • Organizer
      Derived Categories and Geometry in Positive Characteristic, the Stefan Banach International Mathematical Center, Warsaw, Poland
    • Int'l Joint Research / Invited
  • [Presentation] Coble's question and complex dynamics of inertia groups on K3 surfaces2019

    • Author(s)
      K. Oguiso
    • Organizer
      Birational Geometry and Fano varieties dedicated to V. Iskovskikh, Steklov Mathematical Institute, Moscow, Russia
    • Int'l Joint Research / Invited
  • [Presentation] Minimum positive entropy of complex Enriques surface automorphisms2019

    • Author(s)
      K. Oguiso
    • Organizer
      Special Session on Complex Geometry and Dynamical Systems, the Vietnam--USA Joint Mathematical Meeting, the International Center for Interdisciplinary Science and Education (ICISE), Quy Nhon, Vietnam
    • Int'l Joint Research / Invited
  • [Presentation] Complex dynamics of inertia groups on surfaces2019

    • Author(s)
      K. Oguiso
    • Organizer
      Algebraic Geometry International Conference, KIAS, Seoul, Korea
    • Int'l Joint Research / Invited
  • [Presentation] Inertia Groups, Decomposition Groups and Smooth Projective Varieties with Nonfinite Generated Automorphism Groups2019

    • Author(s)
      K. Oguiso
    • Organizer
      Algebraic, Complex and Arithmetic Dynamics, Simons Symposia, Schloss Elmau, Germany
    • Int'l Joint Research / Invited
  • [Presentation] Rational equivalence of cusps2019

    • Author(s)
      S. Ma
    • Organizer
      Japanese-European symposium on symplectic varieties and moduli spaces, ETH, Zurich (Swiss)
    • Int'l Joint Research / Invited
  • [Presentation] Universal K3 surfaces and orthogonal modular forms2019

    • Author(s)
      S. Ma
    • Organizer
      Discrete groups and moduli, 名古屋大学
    • Int'l Joint Research / Invited
  • [Presentation] Mukai models and Borcherds products2019

    • Author(s)
      S. Ma
    • Organizer
      Workshop on Algebraic Geometry, KIAS, Seoul (Korea)
    • Int'l Joint Research / Invited
  • [Presentation] Plane partitions and BPS state counting in diverse dimensions2019

    • Author(s)
      菅野浩明
    • Organizer
      素粒子論と数理物理学  ― 江口-Hanson 解の発見から 40 年 ― 京都大学基礎物理学研究所
    • Invited
  • [Presentation] Cluster tilting in projective geometry2019

    • Author(s)
      O. Iyama
    • Organizer
      Ragnar's Ramification in Algebra and Geometry Emerging Workshop, Toronto, Canada
    • Int'l Joint Research / Invited
  • [Presentation] Tilting theory of preprojective algebras and Cohen-Macaulay modules (3 lectures)2019

    • Author(s)
      O. Iyama
    • Organizer
      Two weeks of silting, Stuttgart, Germany
    • Int'l Joint Research / Invited
  • [Presentation] Tilting theory of contracted preprojective algebras2019

    • Author(s)
      O. Iyama
    • Organizer
      Workshop on quiver varieties and representation theory, Montreal, Canada
    • Int'l Joint Research / Invited
  • [Presentation] Radical layers of representable functors, revisited2019

    • Author(s)
      O. Iyama
    • Organizer
      Homological methods and Tilting theory of Finite Dimensional algebras, Iowa, U.S.A.
    • Int'l Joint Research / Invited
  • [Presentation] Radical layers of representable functors, revisited2019

    • Author(s)
      O. Iyama
    • Organizer
      Seminario de Representaciones de Algebras, Mexico city, Mexico
    • Int'l Joint Research / Invited
  • [Presentation] Tilting theory of contracted preprojective algebras and cDV singularities2019

    • Author(s)
      O. Iyama
    • Organizer
      2019 Noncommutative Algebraic Geometry Shanghai Workshop, Shanghai, China.
    • Int'l Joint Research / Invited
  • [Book] K3 surfaces2020

    • Author(s)
      Shigeyuki Kondo
    • Total Pages
      250
    • Publisher
      European Mathematical Society Publishing House
    • ISBN
      978-3-03719-208-5
  • [Remarks] 個人ページ

    • URL

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

  • [Funded Workshop] Representation Theory of Quivers and Finite Dimensional Algebras, Mathematisches Forschungsinstitut Oberwolfach, Germany2020

  • [Funded Workshop] Discrete Groups and Moduli, Nagoya University2019

  • [Funded Workshop] Supersingular Abelian Varieties and Related Arithmetic, Nagoya University2019

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Published: 2021-01-27  

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