Studies of fibred complex surfaces from diversified perspectives

• Project/Area Number: 24244002
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Algebra
• Research Institution: Osaka University
• Principal Investigator: Konno Kazuhiro 大阪大学, 理学研究科, 教授 (10186869)
• Co-Investigator(Kenkyū-buntansha): 大渕 朗 徳島大学, その他の研究科, 教授 (10211111) ; 徳永 浩雄 首都大学東京, 理工学研究科, 教授 (30211395) ; 小木曽 啓示 東京大学, 数理(科)学研究科(研究院), 教授 (40224133) ; 臼井 三平 大阪大学, その他部局等, 名誉教授 (90117002) ; 足利 正 東北学院大学, 工学部, 教授 (90125203)
• Project Period (FY): 2012-05-31 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥22,360,000 (Direct Cost: ¥17,200,000、Indirect Cost: ¥5,160,000); Fiscal Year 2016: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2013: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2012: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
• Keywords: 代数曲線束 / 堀川指数 / 自己同型 / 楕円曲面 / 対数的混合ホッジ構造 / 原始的双有理変換 / 自己同型群 / 代数学 / 代数曲線 / 特異ファイバー / 退化族 / 局所不変量 / Zariski対 / ホッジ理論 / モノドロミー / オービフォールド特性類 / モーデル・ヴェイユ格子

Outline of Final Research Achievements

Smooth projective algebraic surfaces with a fibration over a smooth projective curve are studied through the local analytic or topological invariants such as Horikawa index and local signature. We gave an explicit formula for them for non-hyperelliptic genus 3 fibrations. Also we studied plane curve arrangements through multiple sections of relative Jacobian varieties (of small genus) and produced new examples of Zariski pairs.

Research Products

• [Journal Article] Certain normal surface singularities of general type (2017)
  • Author(s): Kazuhiro Konno
  • Journal Title: Methods and Applications of Analysis Volume: 印刷中
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Elliptic surfaces and contact conics for a 3-nodal quartic (2017)
  • Author(s): Hiro-o Tokunaga and K. Tumenbayar
  • Journal Title: Hokkaido Math. J. Volume: 印刷中
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A criterion for the primitivity of a birational automorphism of a Calabi-Yau manifold and an application (2017)
  • Author(s): Keiji Oguiso
  • Journal Title: Math. Res. Lett. Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Isomorphic quartic K3 surfaces in the view of Cremona and projective transformations (2017)
  • Author(s): Keiji Oguiso
  • Journal Title: Taiwanese J. Math. Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Extended period domains, algebraic groups, and higher Albanese manifolds (2017)
  • Author(s): Kato, K., Nakayama, C. and Usui, S.
  • Journal Title: Higher Education Press in China and International Press in USA Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Classifying spaces of degenerating mixed Hodge structures IV: The fundamental diagram (2017)
  • Author(s): Kato, K., Nakayama, C. and Usui, S.
  • Journal Title: Kyoto J. Math. Volume: 印刷中
  • NAID: 120006732768
  • Peer Reviewed
• [Journal Article] Automorphisms of elliptic K3 surfaces and Salem numbers of maximal degree (2016)
  • Author(s): H. Esnault, K. Oguiso and X. Yu
  • Journal Title: Algebraic Geometry Volume: 3 Pages: 496-507
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Studies of closed/open mirror symmetry for quintic threefold through log mixed Hodge theory (2016)
  • Author(s): Usui, S
  • Journal Title: Recent Advances in Hodge theory, London Math. Soc. Lect. Note Volume: 427 Pages: 134-164
  • Peer Reviewed
• [Journal Article] On automorphisms of the punctual Hilbert schemes of K3 surfaces (2016)
  • Author(s): Keiji Oguiso
  • Journal Title: European J. Math. Volume: 2 Pages: 246-261
  • Peer Reviewed / Open Access
• [Journal Article] Studies of closed/open mirror symmetry for quintic threefold through log mixed Hodge theory (2016)
  • Author(s): Sampei Usui
  • Journal Title: Recent Advances in Hodge Theory, London Math. Society Lect. Note Volume: 427 Pages: 134-164
  • Peer Reviewed
• [Journal Article] A note on smooth multiple fibers in pencils of algebraic curves (2015)
  • Author(s): Kazuhiro Konno
  • Journal Title: Nihonkai Mathematical Journal Volume: 26 Pages: 103-120
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Toric modifications of cyclic orbifolds and extended Zagier reciprocity foe Dedekind sums (2015)
  • Author(s): Tadashi Ashikaga
  • Journal Title: Tohoku Mathematical Journal Volume: 67 Pages: 323-347
  • Peer Reviewed / Open Access
• [Journal Article] Geometry of bisections of elliptic surfaces and Zariski N-plets for conic arrangements (2015)
  • Author(s): Shinzo Bannai and Hiro-o Tokunaga
  • Journal Title: Geometria Dedicata Volume: 未定 Issue: 1 Pages: 219-237
  • DOI: 10.1007/s10711-015-0054-z
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Integral section of elliptic surfaces and degenerated $(2, 3)$ torus decompositions of a $3$-cuspidal quartic (2015)
  • Author(s): Hiro-o Tokunaga and K. Tumenbayar
  • Journal Title: SUT J. of Math. Volume: 51 Pages: 215-226
  • Peer Reviewed
• [Journal Article] Explicit examples of rational and Calabi-Yau threefolds with primitive automorphisms of positive entropy (2015)
  • Author(s): K. Oguiso, T. T. Truong
  • Journal Title: Journal of Mathematical Sciences, the University of Tokyo Volume: 22 Pages: 361-385
  • Peer Reviewed / Open Access
• [Journal Article] Explicit examples of rational and Calabi-Yau threefolds with primi tive automorphisms of positive entropy (2015)
  • Author(s): K. Oguiso and T. T. Truong
  • Journal Title: J. Math. Sci. Univ. Tokyo Volume: 22 Pages: 361-385
  • Peer Reviewed
• [Journal Article] Automorphism group of planecurve computedby Galois points (2014)
  • Author(s): Ohbuchi,A.
  • Journal Title: Beitr Algebra Geom Volume: in press Issue: 2 Pages: 695-702
  • DOI: 10.1007/s13366-013-0181-3
  • Peer Reviewed
• [Journal Article] Sections of elliptic surfaces and Zariski pairs for conic-line arrangements via dihedral covers (2014)
  • Author(s): Hiro-o Tokunaga
  • Journal Title: Journal of the Mathematical Society of Japan Volume: 66 Issue: 2 Pages: 613-640
  • DOI: 10.2969/jmsj/06620613
  • NAID: 130003394372
  • ISSN: 0025-5645, 1881-1167, 1881-2333
  • Peer Reviewed / Open Access
• [Journal Article] The Weierstrass semigroups on double covers of genus two curves (2014)
  • Author(s): Takeshi Harui, Jiryo Komeda and Akira Ohbuchi
  • Journal Title: Tsukuba J. Math. Volume: 38 Pages: 201-206
  • NAID: 120006772024
  • Peer Reviewed / Open Access
• [Journal Article] Log Hodge theoretic formulation of mirror symmetry for Calabi-Yau threefolds (2014)
  • Author(s): Sampei Usui
  • Journal Title: Vietnam J. Math. Volume: 42 Issue: 3 Pages: 345-363
  • DOI: 10.1007/s10013-014-0085-z
  • NAID: 120006732767
  • Peer Reviewed
• [Journal Article] Summary of studies of closed/open mirror symmetry for quintic threefold through log mixed Hodge theory (2014)
  • Author(s): Sampei Usui
  • Journal Title: RIMS Kokyuroku Volume: 1918 Pages: 161-176
• [Journal Article] Unirationality of Ueno-Campana's threefold (2014)
  • Author(s): F. Catanese, K. Oguiso and T. T. Truong
  • Journal Title: Manuscripta Math. Volume: 145 Issue: 3-4 Pages: 399-406
  • DOI: 10.1007/s00229-014-0680-z
  • Peer Reviewed / Open Access
• [Journal Article] Salem numbers in dynamics on Kaehler threefolds and complex tori (2014)
  • Author(s): K. Oguiso and T. T. Truong
  • Journal Title: Math. Z. Volume: 278 Issue: 1-2 Pages: 93-117
  • DOI: 10.1007/s00209-014-1307-5
  • Peer Reviewed
• [Journal Article] Automorphism group of plane curve computed by Galois points (2014)
  • Author(s): Miura, K. Ohbuchi, A.
  • Journal Title: Beitrage zur Algebra und Geometrie / Contributions to Algebra and Geometry Volume: -
  • Peer Reviewed
• [Journal Article] Sections of elliptic surfaces and Zariski pairs for conic-line arrangements via dihedral covers (2014)
  • Author(s): Hiro-o Tokunaga
  • Journal Title: J. Math. Soc. Japan Volume: -
  • Peer Reviewed
• [Journal Article] Neron models for admissible normal functions (2014)
  • Author(s): Kato, K., Nakayama, C. and Usui, S.
  • Journal Title: Proc. Janan Acad., Ser. A Volume: 90 Pages: 6-10
  • Peer Reviewed
• [Journal Article] Automorphisms of Calabi-Yau threefolds with Picard number three (2014)
  • Author(s): Vladimir Lazic, Keiji Oguiso, Thomas Peternell
  • Journal Title: Adv. Study Pure Math. Volume: -
  • Peer Reviewed
• [Journal Article] Salem numbers in dynamics on Kahler threefolds and complex tori (2014)
  • Author(s): K. Oguiso, T. T. Truong
  • Journal Title: Math. Zeit. Volume: -
  • Peer Reviewed
• [Journal Article] Automorphism groups of Calabi-Yau manifolds of Picard number two (2014)
  • Author(s): Keiji Oguiso
  • Journal Title: Journal of Algebraic Geometry Volume: -
  • Peer Reviewed
• [Journal Article] Classifying spaces of degenerating mixed Hodge structures, III: Spaces of nilpotent orbits (2014)
  • Author(s): K. Kato, C. Nakayama and S. Usui
  • Journal Title: J. Algebraic Geometry Volume: -
  • NAID: 120006732765
  • Peer Reviewed
• [Journal Article] Classifying spaces of degenerating mixed Hodge structures, III: Spaces of nilpotent orbits (2013)
  • Author(s): Kato, K., Nakayama, C. and Usui, S.
  • Journal Title: J. Algebraic Geometry Volume: 22 Pages: 671-772
  • NAID: 120006732765
  • Peer Reviewed
• [Journal Article] Quartic K3 surfaces and Cremona transformations (2013)
  • Author(s): Keiji Oguiso
  • Journal Title: Arithmetic and Geometry of K3 Surfaces and Calabi-Yau Threefolds, Fields Institute Communications Volume: 67 Pages: 455-460
  • Peer Reviewed
• [Journal Article] On the Yau cycle of a normal surface singularity (2012)
  • Author(s): Kazuhiro Konno
  • Journal Title: Asian J. of Math. Volume: 16 Pages: 279-298
  • Peer Reviewed
• [Journal Article] Some sections on rational elliptic surfaces and certain special conic-quartic configurations (2012)
  • Author(s): Hiro-o Tokunaga
  • Journal Title: Kodai Math. J. Volume: 35 Pages: 78-104
  • Peer Reviewed
• [Journal Article] A note on quadratic residue curves on rational ruled surfaces (2012)
  • Author(s): Hiro-o Tokunaga
  • Journal Title: Advanced Studies in Pure Math. Volume: 63 Pages: 565-577
  • Peer Reviewed
• [Journal Article] Weierstrass gap sequences at points of curves on some rational surfaces (2012)
  • Author(s): Akira Ohbuchi and J. Komeda
  • Journal Title: Tsukuba Journal of Math. Volume: 36 Pages: 217-233
  • NAID: 120006582861
  • Peer Reviewed
• [Presentation] Horikawa index of genus three via signature divisor (2017)
  • Author(s): T. Ashikaga
  • Organizer: Mini workshop ''Fibered Varieties" in honor of Prof. M. A. Barja
  • Place of Presentation: 大阪大学
  • Year and Date: 2017-03-22
  • Invited
• [Presentation] Higher Albanese manifolds and their parial compactifications (with K. Kato and C. Nakayama) (2017)
  • Author(s): 臼井三平
  • Organizer: 代数幾何学ミニワークショップ
  • Place of Presentation: 八千代プラザ
  • Year and Date: 2017-01-07
  • Invited
• [Presentation] Higher dimensional manifolds with primitive birational automorphisms of first dynamical degree > 1 (2016)
  • Author(s): Keiji Oguiso
  • Organizer: the Legacy of Emmy Noether and Goettingen Mathematics
  • Place of Presentation: Yau Math. Sci. Center, Sanya, China
  • Year and Date: 2016-12-19
  • Invited
• [Presentation] Horikawa index of genus 3 and hyperelliptic multiplicity (2016)
  • Author(s): 足利 正
  • Organizer: 代数曲線・曲面とその周辺 (Ohbuchi 60)
  • Place of Presentation: 大阪大学
  • Year and Date: 2016-11-26
  • Invited
• [Presentation] On compactifications of higher Albanese varieties (joint with K. Kato, C. Nakayama) (2016)
  • Author(s): 臼井三平
  • Organizer: 射影多様体の幾何とその周辺2016
  • Place of Presentation: 高知工科大学
  • Year and Date: 2016-10-09
  • Invited
• [Presentation] A remark on the topology of reducible cruves (2016)
  • Author(s): Hiro-o Tokunaga
  • Organizer: Seminario de Geometria y Topologia
  • Place of Presentation: Universidad de Zaragoza
  • Year and Date: 2016-09-27
  • Invited
• [Presentation] Higher dimensional projective manifolds with primitive automorphisms of positive entropy (2016)
  • Author(s): Keiji Oguiso
  • Organizer: Cremona conference
  • Place of Presentation: Basel, Swissland
  • Year and Date: 2016-09-12
  • Invited
• [Presentation] Canonical surfaces of degree 3n-3 in projective n-space (2016)
  • Author(s): Kazuhiro Konno
  • Organizer: Algebraic Geometry Seminar
  • Place of Presentation: East China Normal University
  • Year and Date: 2016-09-06
  • Invited
• [Presentation] Horikawa index of genus three via signature divisor (2016)
  • Author(s): T. Ashikaga
  • Organizer: Algebraic Geometry Seminar
  • Place of Presentation: East China Normal University
  • Year and Date: 2016-09-06
  • Invited
• [Presentation] On the topology of reducible plane curves (2016)
  • Author(s): 徳永浩雄
  • Organizer: Tsuda College and OIST joint workshop on Calabi-Yau varieties
  • Place of Presentation: 津田塾大学
  • Year and Date: 2016-08-01
  • Invited
• [Presentation] Canonical surfaces of degree 3n-3 in projective n-space (2016)
  • Author(s): 今野一宏
  • Organizer: 第13回代数曲面ワークショップ
  • Place of Presentation: 高知工科大学
  • Year and Date: 2016-07-02
  • Invited
• [Presentation] A remark on the topology of reducible plane curves (2016)
  • Author(s): 徳永浩雄
  • Organizer: 第13回代数曲面ワークショップ
  • Place of Presentation: 高知工科大学
  • Year and Date: 2016-07-02
  • Invited
• [Presentation] Birational geometry through complex dynamics (2016)
  • Author(s): Keiji Oguiso
  • Organizer: The 7th Pacific RIM Conference
  • Place of Presentation: Seoul National University
  • Year and Date: 2016-06-27
  • Invited
• [Presentation] Extended period domains and algebraic groups (with K. Kato and C. Nakayama) (2016)
  • Author(s): Sampei Usui
  • Organizer: Algebraic cycles and moduli
  • Place of Presentation: Montreal, Canada
  • Year and Date: 2016-06-04
  • Invited
• [Presentation] 平面６次曲線と標準曲面 (2016)
  • Author(s): 今野一宏
  • Organizer: 第11回 代数・解析・幾何学セミナー
  • Place of Presentation: 鹿児島大学理学部
  • Year and Date: 2016-02-15
  • Invited
• [Presentation] A certain intersection number on moduli space of genus 3 and Horikawa index (2016)
  • Author(s): 足利正
  • Organizer: 代数曲面ワークショップ
  • Place of Presentation: 首都大学東京秋葉原サテライトキャンパス
  • Year and Date: 2016-02-06
  • Invited
• [Presentation] Integral sections of rational elliptic surfaces and contact conics to $3$-nodal quartics (2015)
  • Author(s): Hiro-o Tokunaga
  • Organizer: Various Aspects of Algebraic Geometry
  • Place of Presentation: 国際基督教大学
  • Year and Date: 2015-12-13
  • Invited
• [Presentation] Primitive automorphisms of projective hyperkaehler 4- folds and Calabi-Yau 4-folds (2015)
  • Author(s): K. Oguiso
  • Organizer: RIMS Workshop on Complex Dynamics 2015
  • Place of Presentation: 京都大学数理解析研究所
  • Year and Date: 2015-12-07
  • Int'l Joint Research / Invited
• [Presentation] Extended period domains and algebraic groups (with K. Kato, C. Nakayama) (2015)
  • Author(s): Sampei Usui
  • Organizer: The 3rd Franco-Japanese-Vietnamese Symposium of Singularities
  • Place of Presentation: Institute of Mathematics, Vietnam Academy of Science and Technology (Hanoi, Vietnam)
  • Year and Date: 2015-12-03
  • Int'l Joint Research / Invited
• [Presentation] Another realizaion of Birman-Hilden relation via hyperellptic splitting family (2015)
  • Author(s): Tadashi Ashikaga
  • Organizer: Topology and singularities
  • Place of Presentation: Gakushuin Univ.
  • Year and Date: 2015-10-14
  • Int'l Joint Research / Invited
• [Presentation] Integral sections of rational elliptic surfaces and contact conics to an irreducible 3-nodal quartic (2015)
  • Author(s): Hiro-o Tokunaga
  • Organizer: Geometry, Topology and Combinatorics of Hyperplane Arrangements and Related Problems
  • Place of Presentation: Universidad de Zaragoza (Zaragoza, Spain)
  • Year and Date: 2015-09-18
  • Int'l Joint Research / Invited
• [Presentation] 一般型代数曲面の多重標準写像と標準環 (2015)
  • Author(s): 今野一宏
  • Organizer: 第６０回代数学シンポジウム
  • Place of Presentation: 静岡大学
  • Year and Date: 2015-09-01
  • Invited
• [Presentation] Simple abelian varieties and primitive automorphisms of null entropy of surfaces (2015)
  • Author(s): K. Oguiso
  • Organizer: Workshop in Dynamics and Geometry
  • Place of Presentation: KIAS (Seoul, Korea)
  • Year and Date: 2015-08-17
  • Int'l Joint Research / Invited
• [Presentation] Torres の定理の拡張について (2015)
  • Author(s): 大渕朗
  • Organizer: ホッジ理論と代数幾何学
  • Place of Presentation: 東京電機大学
  • Year and Date: 2015-08-07
  • Invited
• [Presentation] Automorphisms of elliptic K3 surfaces and Salem numbers of maximal degree (2015)
  • Author(s): Keiji Oguiso
  • Organizer: Algebraic Geometry, dedicated to Fab rizio Catanese on the occasion of his 65th birthday
  • Place of Presentation: University of Bayreuth, Germany
  • Year and Date: 2015-03-12 – 2015-03-14
  • Invited
• [Presentation] 種数３のファイバー芽の堀川指数とアイヒラー型跡公式 (2015)
  • Author(s): 足利正
  • Organizer: 第２回代数幾何学研究集会宇部
  • Place of Presentation: 宇部高専
  • Year and Date: 2015-01-24
  • Invited
• [Presentation] Studies of closed/open mirror symmetry for quintic threefold through log mixed Hodge theory (2014)
  • Author(s): Sampei Usui
  • Organizer: Algebraic Geometry Seminar
  • Place of Presentation: Johns Hopkins University
  • Year and Date: 2014-11-20
• [Presentation] 小山2重点について (2014)
  • Author(s): 今野一宏
  • Organizer: 代数多様体とその周辺
  • Place of Presentation: 琉球大学理学部
  • Year and Date: 2014-09-30
  • Invited
• [Presentation] Studies of closed/open mirror symmetry for quintic threefold through log mixed Hodge theory (2014)
  • Author(s): 臼井三平
  • Organizer: 研究集会「代数多様体とその周辺」
  • Place of Presentation: 琉球大学理学部
  • Year and Date: 2014-09-29
  • Invited
• [Presentation] Algebro-geometric aspects of complex dynamics (2014)
  • Author(s): Keiji Oguiso
  • Organizer: Symmetries of Kaehler manifolds, dynamics and moduli spaces
  • Place of Presentation: SISSA, Trieste, Italy
  • Year and Date: 2014-09-22 – 2014-09-26
  • Invited
• [Presentation] Zariski N-plets for arrangements of plane curves of low degree and rational elliptic surfaces (2014)
  • Author(s): Hiro-o Tokunaga
  • Organizer: The 1st Workshop of JSPS-MAE Sakura Program
  • Place of Presentation: 北海道大学
  • Year and Date: 2014-09-01
  • Invited
• [Presentation] Horikawa index of genus 3 with periodic monodromy via Eicjler's trace formula (2014)
  • Author(s): 足利正
  • Organizer: リーマン面に関する位相 幾何学2014
  • Place of Presentation: 東京大学
  • Year and Date: 2014-08-25
  • Invited
• [Presentation] The automorphism group of the punctural Hilbert scheme of a Cayley 's K3 surface and related topics (2014)
  • Author(s): Keiji Oguiso
  • Organizer: Complex Analysis and Geometry - A conference in honour of Professo r Doctor Thomas Peternell's upcoming 60th birthday
  • Place of Presentation: Freiburg, Germany
  • Year and Date: 2014-08-21 – 2014-08-23
  • Invited
• [Presentation] 一般型代数曲面の地誌学入門 (2014)
  • Author(s): 今野一宏
  • Organizer: Encounter with Mathematics, 第61回 代数曲面とその位相不変量をめぐって ～代数曲面の地誌学～
  • Place of Presentation: 中央大学理工学部
  • Year and Date: 2014-06-21
  • Invited
• [Presentation] Severiの不等式 (2014)
  • Author(s): 今野一宏
  • Organizer: Encounter with Mathematics, 第61回 代数曲面とその位相不変量をめぐって ～代数曲面の地誌学～
  • Place of Presentation: 中央大学理工学部
  • Year and Date: 2014-06-21
  • Invited
• [Presentation] 有理楕円曲面上のsection及びbisectionの幾何 (2014)
  • Author(s): 徳永浩雄
  • Organizer: 函館数論幾何ワークショップ
  • Place of Presentation: 函館中央図書館
  • Year and Date: 2014-05-27
  • Invited
• [Presentation] Automorphism groups of compact kyperkaehler manifolds of small Picard numbers (2014)
  • Author(s): Keiji Oguiso
  • Organizer: Arithmetic and Algebraic Geometry
  • Place of Presentation: University of Tokyo, Japan
  • Invited
• [Presentation] On the fixed part of a non-special linear system over a normal surface singularity (2013)
  • Author(s): 今野一宏
  • Organizer: Classification of Algebraic Varieties and Related Topics
  • Place of Presentation: Cetraro, Italy
  • Invited
• [Presentation] Torres の強DC 条件について (2013)
  • Author(s): 大渕朗
  • Organizer: 代数幾何小研究集会
  • Place of Presentation: 新潟大学駅南キャンパスときめいと講義室B
  • Invited
• [Presentation] Smooth Quartic K3 Surfaces and Cremona Transformations (2013)
  • Author(s): Keiji Oguiso
  • Organizer: Algebraic and Complex Geometry at the Second Pacific Rim Mathematical Association (PRIMA) Congress
  • Place of Presentation: Shanghai Jiao Tong University, China.
  • Invited
• [Presentation] Explicit examples of rational and Calabi-Yau threefolds with primitive automorphisms of positive entropy (2013)
  • Author(s): Keiji Oguiso
  • Organizer: Classification of Algebraic Varieties and related topics
  • Place of Presentation: Grand Hotel San Michele, Cetraro, Italy
  • Invited
• [Presentation] On some example of automorphisms with positive entrropy 1, 2. (2013)
  • Author(s): Keiji Oguiso
  • Organizer: Categories and Complexity
  • Place of Presentation: Wien University, Wien
  • Invited
• [Presentation] Smooth quartic K3 surfaces and cremona transformations (2013)
  • Author(s): Keiji Oguiso
  • Organizer: Higher Dimensional Algebraic Geometry in honour of Professor Yujiro Kawamata's sixtieth birthday
  • Place of Presentation: 東京大学
  • Invited
• [Presentation] Log Hodge theoretic formulation of mirror symmetry for Calabi-Yau threefolds (2013)
  • Author(s): Sampei Usui
  • Organizer: Arithmetic, Cycles, Motives and Algebraic Geometry
  • Place of Presentation: Universidad Nacional Autonoma de Mexico (Mexico)
  • Invited
• [Presentation] Numerical invariants of fibred algebraic surfaces (2012)
  • Author(s): 今野一宏
  • Organizer: 特異点と多様体の幾何学2012
  • Place of Presentation: 山形大学理学部
  • Invited
• [Presentation] 楕円曲面上の演算を利用した平面曲線の構成とその応用 (2012)
  • Author(s): 徳永浩雄
  • Organizer: 特異点と多様体の幾何学2012
  • Place of Presentation: 山形大学理学部
  • Invited
• [Presentation] Geometry of sections of certain rational elliptic surfaces and its application (2012)
  • Author(s): 徳永浩雄
  • Organizer: 代数幾何学城崎シンポジウム
  • Place of Presentation: 兵庫県豊岡市
  • Invited
• [Presentation] Toric modification of cyclic orbifolds and extened Zagier reciprocity for Dedekin sums (2012)
  • Author(s): 足利正
  • Organizer: 代数学シンポジウム
  • Place of Presentation: 京都大学数理解析研究所
  • Invited
• [Presentation] 巡回商特異点のある解消プロセスとその例外集合 (2012)
  • Author(s): 足利正
  • Organizer: Encounter with Mathematics 第59回
  • Place of Presentation: 中央大学
  • Invited
• [Presentation] Birational automorphism groups of Calabi-Yau manifolds of Picard number 2 (2012)
  • Author(s): Keiji Oguiso
  • Organizer: Interactions between continuous and discrete holomorphic dynamical systems
  • Place of Presentation: Banff (Canada)
  • Invited
• [Presentation] Automorphism groups of Calabi-Yau manifolds of Picard number two (2012)
  • Author(s): Keiji Oguiso
  • Organizer: Algebraic and complex geometry - a conference on the occasion of Klaus Hulek's 60-th birthday
  • Place of Presentation: Hannover (Germany)
  • Invited
• [Presentation] 代数曲線とクリフォード指数について (2012)
  • Author(s): 大渕朗
  • Organizer: 代数学シンポジウム
  • Place of Presentation: 京都大学数理解析研究所
  • Invited
• [Presentation] Studying mirror symmetry through log mixed Hodge theory (2012)
  • Author(s): Sampei Usui
  • Organizer: Hodge Theory, Complex Geometry, and Representation Theory
  • Place of Presentation: Texas Christian University (USA)
  • Invited
• [Presentation] A study of mirror symmetry through log mixed Hodge theory (2012)
  • Author(s): 臼井三平
  • Organizer: 特異点 と多様体の幾何学2012
  • Place of Presentation: 山形大学理学部
  • Invited
• [Presentation] Higher-dimensional continued fractions for cyclic orbifold and Dedekind sums
  • Author(s): 足利正
  • Organizer: 射影多様体の幾何とその周辺2013
  • Place of Presentation: 高知大学
  • Invited
• [Presentation] 2 次元連分数の子孫項に伴う有理 Chow 環と Fourier-Dedekind 和
  • Author(s): 足利正
  • Organizer: 代数幾何学ミニワークショプ
  • Place of Presentation: 兵庫県多可町
  • Invited
• [Presentation] Elliptic surfaces and Zariski pairs for conic-line arrangements
  • Author(s): 徳永浩雄
  • Organizer: Joint international meeting of American Math. Soc. and Romania Math. Soc
  • Place of Presentation: Alba-Iulia (Romania)
  • Invited
• [Presentation] Geometry of sections of elliptic surfaces and its applicaitons
  • Author(s): 徳永浩雄
  • Organizer: 1st Franco-Japanese-Vietnamese Symposium on Singularities
  • Place of Presentation: Nice (France)
  • Invited
• [Presentation] Geometry of (multi-) sections of elliptic surfaces and its applications
  • Author(s): 徳永浩雄
  • Organizer: 射影多様体の幾何とその周辺
  • Place of Presentation: 高知大学
  • Invited
• [Presentation] Study of mirror symmetry through log mixed Hodge theory
  • Author(s): 臼井三平
  • Organizer: RECENT ADVANCES IN HODGE THEORY: PERIOD DOMAINS, ALGEBRAIC CYCLES, AND ARITHMETIC
  • Place of Presentation: University of British Columbia, Vancouver, BC, CANADA
  • Invited
• [Presentation] Study of mirror symmetry through log mixed Hodge theory
  • Author(s): 臼井三平
  • Organizer: ホッジ理論と代数幾何学
  • Place of Presentation: 東京電機大学
  • Invited
• [Presentation] Studies of closed/open mirror symmetry for quintic 3-folds through log mixed Hodge theory
  • Author(s): 臼井三平
  • Organizer: ミラー対称性の展望
  • Place of Presentation: 京都大学 RIMS
  • Invited
• [Book] 平面代数曲線のはなし (2017)
  • Author(s): 今野一宏
  • Total Pages: 170
  • Publisher: 内田老鶴圃
• [Book] リーマン面と代数曲線 (2015)
  • Author(s): 今野一宏
  • Total Pages: 272
  • Publisher: 共立出版
• [Book] 代数方程式のはなし (2014)
  • Author(s): 今野一宏
  • Total Pages: 143
  • Publisher: 内田老鶴圃
• [Book] 代数曲線束の地誌学 (2013)
  • Author(s): 今野一宏
  • Total Pages: 284
  • Publisher: 内田老鶴圃
• [Funded Workshop] Mini workshop 'Fibered Varieties' in honor of Prof. M. A. Barja (2017)
  • Place of Presentation: 大阪大学
  • Year and Date: 2017-03-22
• [Funded Workshop] Branched coverings, Degenerations and Related Topics 2017 (2017)
  • Place of Presentation: 東北学院大学
  • Year and Date: 2017-03-07