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Birational geometry of higher dimensional algebraic varieties

Research Project

Project/Area Number 16H02141
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Algebra
Research InstitutionThe University of Tokyo

Principal Investigator

Kawamata Yujiro  東京大学, 大学院数理科学研究科, 特別教授 (90126037)

Co-Investigator(Kenkyū-buntansha) 戸田 幸伸  東京大学, カブリ数物連携宇宙研究機構, 教授 (20503882)
中村 勇哉  東京大学, 大学院数理科学研究科, 助教 (20780034)
高木 俊輔  東京大学, 大学院数理科学研究科, 教授 (40380670)
大川 新之介  大阪大学, 理学研究科, 准教授 (60646909)
權業 善範  東京大学, 大学院数理科学研究科, 准教授 (70634210)
小木曽 啓示  東京大学, 大学院数理科学研究科, 教授 (40224133)
Project Period (FY) 2016-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥46,020,000 (Direct Cost: ¥35,400,000、Indirect Cost: ¥10,620,000)
Fiscal Year 2020: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2019: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2018: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2017: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2016: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
Keywords代数多様体 / 導来圏 / 連接層 / 非可換変形 / 双有理幾何学 / フロップ / 半直交分解 / 単純列 / 重みつき射影空間 / 有理曲線 / 極小モデル / 相対的例外対象列 / A無限大構造 / 普遍族 / 障害 / 標準因子 / 安定性条件 / 壁超え / 偏屈連接層 / 単純組 / 半正値性定理 / 単射性定理 / アバンダンス予想 / 極小モデル理論 / トーリック多様体 / マッカイ対応 / 例外対象 / 多元非可換変形
Outline of Final Research Achievements

The theory of non-commutative deformations and its applications to birational geometry were the main research topics. For deformations of coherent sheaves or perverse coherent sheaves, it is natural to consider non-commutative rings as parameter rings because they are described by DG algebras. There are more non-commutative deformations than commutative ones and we can study deeper structure of algebraic varieties. In this study, we develop a general theory of multi-pointed non-commutative deformations and describe semi-universal deformations of simple collections or partial simple collections. As an application, we studied semi-orthogonal decompositions of derived categories of algebraic varieties that have singularities. We constructed locally free sheaves from divisorial sheaves on algebraic surfaces using non-commutative deformations, and constructed semi-orthogonal decompositions for some singular rational surfaces, and also for some three-dimensional varieties.

Academic Significance and Societal Importance of the Research Achievements

極小モデル理論を中心とする双有理幾何学はこの40年間余の間に研究代表者を含む様々な国々の研究者の努力によって大きな成果を上げてきたが、その発展形としての導来圏と双有理幾何学の関係という研究分野は近年になり活発に研究されるようになった。その研究手段として非可換変形を使うというのは新しい考え方である。非可換変形は自然な考え方であるがまだ結果が少なく、表現論との繋がりを含め新しい分野としての発展が期待できる。

Report

(6 results)
  • 2022 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (70 results)

All 2023 2022 2021 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (9 results) Journal Article (27 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 27 results) Presentation (29 results) (of which Int'l Joint Research: 23 results,  Invited: 29 results) Remarks (2 results) Funded Workshop (3 results)

  • [Int'l Joint Research] University of Bayreuth(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Fudan University(中国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] KAIST(韓国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Taiwan University(その他の国・地域(台湾))

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Bayreuth 大学(ドイツ)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] 北京大学/清華大学(中国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] 台湾大学(台湾)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] University of Bayreuth(ドイツ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] National Center for Theoretical Sciences(台湾)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Non-commutative deformations of perverse coherent sheaves and rational curves2023

    • Author(s)
      Yujiro Kawamata
    • Journal Title

      J. Algebraic Geom.

      Volume: 32 Issue: 1 Pages: 59-91

    • DOI

      10.1090/jag/805

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Semi-orthogonal decomposition of a derived category of a 3-fold with an ordinary double point2022

    • Author(s)
      Yujiro Kawamata
    • Journal Title

      LMS Lecture Notes Series

      Volume: 478 Pages: 183-215

    • DOI

      10.1017/9781009180849.007

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the derived category of a weighted projective threefold2022

    • Author(s)
      Yujiro Kawamata
    • Journal Title

      Bollettino dell'Unione Matematica Italiana

      Volume: 15 Issue: 1-2 Pages: 245-252

    • DOI

      10.1007/s40574-021-00277-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On non-commutative formal deformations of coherent sheaves on an algebraic variety2021

    • Author(s)
      Yujiro Kawamata
    • Journal Title

      EMS Surv. Math. Sci.

      Volume: 8 Issue: 1 Pages: 237-263

    • DOI

      10.4171/emss/49

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-commutative deformations of simple objects in a category of perverse coherent sheaves2020

    • Author(s)
      Yujiro Kawamata
    • Journal Title

      Selecta Math.

      Volume: 26 Issue: 3 Pages: 43-43

    • DOI

      10.1007/s00029-020-00570-w

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fujita decomposition over higher dimensional base2019

    • Author(s)
      Fabrizio Catanese and Yujiro Kawamata
    • Journal Title

      European J. Math.

      Volume: 5-3 Issue: 3 Pages: 720-728

    • DOI

      10.1007/s40879-018-0287-0

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Moduli of Bridgeland semistable objects on 3-folds and Donaldson-Thomas invariants2019

    • Author(s)
      Dulip Piyaratne and Yukinobu Toda
    • Journal Title

      J. Reine. Angew. Math

      Volume: 747 Pages: 175-219

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nef anti-canonical divisors and rationally conncected fibrations2019

    • Author(s)
      S. Ejiri, Y. Gongyo
    • Journal Title

      Compos. Math.

      Volume: 155 Issue: 7 Pages: 1444-1456

    • DOI

      10.1112/s0010437x19007383

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rational points on log Fano threefolds over a finite field2019

    • Author(s)
      Yoshinori Gongyo, Yusuke Nakamura, Hiromu Tanaka
    • Journal Title

      J. Eur. Math. Soc. (JEMS)

      Volume: 21 Issue: 12 Pages: 3759-3795

    • DOI

      10.4171/jems/913

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] General hyperplane sections of threefolds in positive characteristic2018

    • Author(s)
      Kenta Sato and Shunsuke Takagi
    • Journal Title

      Journal of the Institute of Mathematics of Jussieu

      Volume: 印刷中 Issue: 2 Pages: 647-661

    • DOI

      10.1017/s1474748018000166

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On multi-pointed non-commutative deformations and Calabi-Yau threefolds2018

    • Author(s)
      Yujiro Kawamata
    • Journal Title

      Compositio Math.

      Volume: 154 Issue: 9 Pages: 1815-1842

    • DOI

      10.1112/s0010437x18007248

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Derived McKay correspondence for GL (3, C )2018

    • Author(s)
      Kawamata Yujiro
    • Journal Title

      Advances in Mathematics

      Volume: 328 Pages: 1199-1216

    • DOI

      10.1016/j.aim.2018.01.022

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gopakumar-Vafa invariants via vanishing cycles2018

    • Author(s)
      Davesh Maulik and Yukinobu Toda
    • Journal Title

      Invent. Math.

      Volume: 213 Issue: 3 Pages: 1017-1097

    • DOI

      10.1007/s00222-018-0800-6

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Finitistic test ideals on numerically Q-Gorenstein varieties2018

    • Author(s)
      Shunsuke Takagi
    • Journal Title

      J. Algebra

      Volume: 印刷中 Pages: 266-279

    • DOI

      10.1016/j.jalgebra.2018.08.003

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On multi-pointed non-commutative deformations and Calabi-Yau threefolds2018

    • Author(s)
      Kawamata Yujiro
    • Journal Title

      Compositio Math.

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gopakumar-Vafa invariants via vanishing cycles2018

    • Author(s)
      D. Maulik and Y. Toda
    • Journal Title

      Invent. Math.

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Kollar’s injectivity theorem for globally F-regular varieties2018

    • Author(s)
      Gongyo Yoshinori、Takagi Shunsuke
    • Journal Title

      European Journal of Mathematics

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A boundedness conjecture for minimal log discrepancies on a fixed germ2018

    • Author(s)
      M. Mustata, Y. Nakamura
    • Journal Title

      Contemporary Mathematics

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nilpotence of Frobenius action and the Hodge filtration on local cohomology2017

    • Author(s)
      Vasudevan Srinivas and Shunsuke Takagi
    • Journal Title

      Adv. Math.

      Volume: 305 Pages: 456-478

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Derived categories of toric varieties III2016

    • Author(s)
      Y. Kawamata
    • Journal Title

      European Journal of Mathematics

      Volume: 2 Issue: 1 Pages: 196-207

    • DOI

      10.1007/s40879-015-0065-1

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the relationship between depth and cohomological dimension2016

    • Author(s)
      Hailong Dao and Shunsuke Takagi
    • Journal Title

      Compos. Math.

      Volume: 152 Pages: 876-888

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Automorphisms of elliptic K3 surfaces and Salem numbers of maximal degree2016

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

      Algebraic Geometry

      Volume: 3 Pages: 496-507

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simple abelian varieties and primitive automorphisms of null entropy of surfaces2016

    • Author(s)
      K. Oguiso
    • Journal Title

      Progress in Math.

      Volume: 315 Pages: 279-296

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gepner type stability condition via Orlov/Kuznetsov equivalence2016

    • Author(s)
      Y. Toda
    • Journal Title

      Int. Math. Res. Not.

      Volume: 2016 Pages: 24-82

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stable pair invariants on Calabi-Yau 3-folds containing P22016

    • Author(s)
      Y. Toda
    • Journal Title

      Geometry and Topology

      Volume: 20 Pages: 555-611

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Uniformbounds for strongly F-regular surfaces2016

    • Author(s)
      Paolo Cascini, Yoshinori Gongyo and Karl Schwede
    • Journal Title

      Trans. Am. Math. Soc.

      Volume: 368 Pages: 5547-5563

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Surface of globally F-regular and F-split type2016

    • Author(s)
      Yoshinori Gongyo and Shunsuke Takagi
    • Journal Title

      Math. Ann.

      Volume: 364 Pages: 841-855

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] Deformations over non-commutative base2022

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Higher Dimensional Algebraic Geometry, Johns Hopkins Univ.
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Deformations over non-commutative base2022

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Deformations of Geometric Structures, Columbia Univ. and Harvard Univ.
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Semi-orthogonal decomposition and smoothing. (zoom lecture)2021

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Algebraic Geometry Seminar, Tsinghua University
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Non-commutative deformations of perverse coherent sheaves. (zoom lecture)2020

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Komplexe Analysis, Mathematisches Forshungsinstitut Oberwolfach
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Kunihiko Kadaira and complex manifolds. (zoom lecture)2020

    • Author(s)
      Yujiro Kawamata
    • Organizer
      CMSA, Harvard University
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Non-commutative deformations, perverse coherent sheaves and semi-orthogonal decompositions2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Birational geometry and moduli spaces, MSRI, Berkeley, USA
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-commutative deformations, perverse coherent sheaves and semi-orthogonal decompositions2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      International workshop on derived categories and related topics, Sun Yat-Sen University, Guangzhou, China
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On non-commutative deformations and applications to perverse coherent sheaves and semi-orthogonal decompositions2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Birational geometry and Fano varieties. Steklov Institute, Moscow, Russia
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-commutative deformations, perverse coherent sheaves and semi-orthogonal decompositions2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      The ninth congress of Romanian mathematicians. Galati, Romania
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On NC deformations2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Conference on algebraic and arithmetic geometry, Sanya, China
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-commutative deformations of coherent sheaves2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Workshop on birational geometry and moduli spaces. The University of Sydney, Australia
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-commutative deformations of coherent sheaves2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Algebraic geometry in Auckland. The University of Auckland, New Zealand
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Semi-orthogonal decomposition of a derived category of an algebraic variety2019

    • Author(s)
      Yujiro Kawamata
    • Organizer
      KAIST, Korea, intensive lectures, January 16-24
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Non-commutative deformations of simple collections2018

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Geometry at Large, Fuerteventura, Spain, December 10-18
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On non-commutative deformations of simple objects and applications2018

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Algebraic Geometry in East Asia, Hanoi, Vietnam, October 23-26
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NC deformations of simple objects in a category of perverse coherent sheaves2018

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Differential, Algebraic and Topological Methods in Complex Algebraic Geometry, Cetraro, Italy, September 6-15
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On non-commutative deformations2018

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Homological Methods in Algebra and Geometry II, Dal-es-Salaam, Tanzania, July 9-27
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Derived McKay correspondence for GL(3,C)2017

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Algebraic geometry conference in honor of JongHae Keum's 60th birthday
    • Place of Presentation
      Haeundae, Busan, Korea
    • Year and Date
      2017-03-28
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Derived McKay correspondence for GL(3,C)2017

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Derived Category and Birational Geometry
    • Place of Presentation
      Osaka University
    • Year and Date
      2017-02-20
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On derived McKay correspondence for GL(3,C)2017

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Workshop on higher dimensional algebraic geometry, holomorphic dynamics and their interactions
    • Place of Presentation
      National University of Singapore
    • Year and Date
      2017-01-09
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NC deformations of simple collections2017

    • Author(s)
      Kawamata Yujiro
    • Organizer
      International Conference on Algebraic Geometry, Tsinghua University, Beijing, China, December 8-11, 2017.
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] NC deformations of simple collections2017

    • Author(s)
      Kawamata Yujiro
    • Organizer
      Algebraic Geometry: Birational Classification, Derived Categories, and Moduli Spaces. Oberwolfach Mathematics Institute, Germany, September 25-29, 2017.
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Birational geometry and derived categories2017

    • Author(s)
      Kawamata Yujiro
    • Organizer
      Higher Dimensional Algebraic Geometry. NCTS, Taiwan University, Taiwan, June 19-23, 2017.
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Birational geometry and derived categories2017

    • Author(s)
      Kawamata Yujiro
    • Organizer
      The Algebraic and Arithmetic Geometry Conference 2017. University of Science and Technology of China, Hefei, China, May 8-12, 2017.
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Birational geometry and derived categories2017

    • Author(s)
      Kawamata Yujiro
    • Organizer
      Conference on Geometry and Topology (JDG 2017). Harvard University, Cambridge, USA, April 28-May 2, 2017.
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On derived McKay correspondence for GL(3,C)2016

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Workshop on Algebraic Geometry
    • Place of Presentation
      Hanga Roa, Chile
    • Year and Date
      2016-12-18
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Derived categories of toric varieties2016

    • Author(s)
      Yujiro Kawamata
    • Organizer
      SUMA 2016, Algebraic geometry session
    • Place of Presentation
      Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile.
    • Year and Date
      2016-12-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Derived McKay correspondence for GL(3,C)2016

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Workshop on arithmetic and geometry
    • Place of Presentation
      Ctraro, Italy
    • Year and Date
      2016-08-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Derived MaKay correspondence for finite abelian groups and derived toric MMP2016

    • Author(s)
      Yujiro Kawamata
    • Organizer
      Non-commutative crepant resolutions, Ulrich modules and generalizations of the McKay correspondence
    • Place of Presentation
      Kyoto University
    • Year and Date
      2016-06-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] Homepage of Kawamata Laboratory

    • URL

      http://faculty.ms.u-tokyo.ac.jp/~kawamata_lab/

    • Related Report
      2017 Annual Research Report
  • [Remarks] http://faculty.ms.u-tokyo.ac.jp/~kawamata_lab/

    • Related Report
      2016 Annual Research Report
  • [Funded Workshop] The 41st Japan Symposium on Commutative Algebra2019

    • Related Report
      2019 Annual Research Report
  • [Funded Workshop] Higher dimensional algebraic geometry, 2018年3月12日~16日, 東京大学大学院数理科学研究科大講義室2018

    • Related Report
      2017 Annual Research Report
  • [Funded Workshop] The second higher dimensional algebraic geometry conference at Echigo Yuzawa2017

    • Place of Presentation
      Echigo Yuzawa
    • Year and Date
      2017-02-13
    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2024-01-30  

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