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講演記録 (2000-)　

  1. 超特異K3 曲面の次数２の射影モデルについて
    代数幾何ワークショップ
    8 December, 2011
    東京大学大学院数理科学研究科
  2. Supersingular K3 surfaces in characteristic 5
    代数幾何学研究集会-ファノ多様体と正標数上の話題を中心として-
    21 February, 2011
    九州大学伊都キャンパス数理学研究教育棟
  3. 標数5における超特異K3曲面
    日本数学会中四国支部
    29 January, 2011
    鳴門地場産業振興センター
  4. Supersingular K3 surfaces and lattice theory
    Arithmetic and Algebraic Geometry 2011
    21 January, 2010
    University of Tokyo
  5. 超特異代数多様体について
    日本数学会
    24 September, 2010
    名古屋大学
  6. 小さい標数における超特異K3曲面の構成
    玉原特殊多様体研究集会
    8 September, 2010
    玉原国際セミナーハウス
  7. 小さい標数における超特異K3曲面について
    代数幾何研究集会2010
    17 July, 2010
    法政大学小金井キャンパス
  8. Lattices of algebraic cycles in positive characteristics
    5th Pacific Rim Conference on Mathematics
    02 July, 2010
    Stanford University
  9. Lattices of algebraic cycles on varieties of Fermat type (joint work with Nobuyoshi Takahashi) slides
    Algebraic Geometry in Characteristic p and Related Topics
    19 February, 2010
    University of Tokyo
  10. On lattice-invariants of complex algebraic surfaces and their applications slides
    Symposium in algebraic geometry
    28 December, 2009
    Busan, Korea
  11. 超特異K3曲面と格子理論 slides
    代数学と計算
    04 December, 2009
    首都大学東京
  12. Transcendental lattices of complex algebraic surfaces slides
    Tohoku-Fudan joint symposium on algebraic geometry
    25 November, 2009
    Tohoku University, Sendai
  13. Transcendenlatl lattices of surfaces
    Workshop "Category Theory , Computer Science and Topology"
    18 October, 2009
    信州大学
  14. Remarks on Zariski pairs of surfaces in the projective space
    Seminar Talk
    24 September, 2009
    Fudan University, ShangHai, China
  15. Zariski pairs of normal surfaces in P^3
    The 5th Franco-Japanese Symposium on Singularities
    27 August, 2009
    IRMA, Strasbourg, France
  16. On lattice-theoretic invariants of curves on a surface slides
    The 2nd MSJ-SI Arrangements of Hyperplanes
    12 August, 2009
    Hokkaido University, Sapporo
  17. Links of hypersurface simple K3 singularities (joint work with A. Katanaga)
    Hodge theory and algebraic geometry
    3 July, 2009
    RIMS, Kyoto
  18. Zariski pairs and lattice theory slides
    Antalya Algebra Days XI
    24 May, 2009
    Antalya, Turk
  19. Zariski pairs and lattice theory
    General Seminar
    18 May, 2009
    Bilkent University, Ankara, Turk
  20. Splitting curves for the double covering branching along a plane curve of degree 6
    第４回代数・解析・幾何学セミナー
    18 February, 2009
    鹿児島大学
  21. Splitting curves for the double covering branching along a plane curve of degree 6, II and III
    特異点セミナー
    23 January, 2009
    東京理科大学
  22. On equisingular families of plane curves of degree 6 slides
    Arithmetic and Algebraic Geometry Related to Moduli Spaces
    19 January, 2009
    University of Tokyo
  23. Generalized Zariski-van Kampen theorem and its application to Grassmannian dual varieties
    Conference on Topology-Geometry-Algebra-Arithmetic
    22 December, 2008
    Dalat University, Dalat, Vietnam
  24. Splitting curves for the double covering branching along a plane curve of degree 6
    16 December, 2008
    Singularity Seminar, Tokyo University of Science　
  25. Generalized Zariski-van Kampen theorem
    13 November, 2008
    Algebraic Geometry in East Asia, KIAS, Seoul　
  26. Splitting curves for double sextic planes
    07 November, 2008
    Algebraic Geometry in Positive Characteristics and Related Topics, Nagoya University　
  27. Generalized Zariski-van Kampen theorem and its application to Grassmannian dual varieties
    27 August, 2008
    Colloquium at Department of Mathematics, National University of Singapore 　
  28. Zariski-van Kampenの定理の一般化とグラスマン双対多様体
    June 17, 2008
    広島大学理学部数学科　トポロジー・幾何セミナー
  29. 正標数の代数多様体のチャーン数について
    April 25, 2008
    広島大学理学部数学科　代数学セミナー
  30. Dessins d'enfants and transcendental lattices of singular K3 surfaces
    酒井文雄先生還暦記念研究集会
    March 10, 2008
    埼玉大学理学部数学教室
  31. Topology and arithmetic of maximizing sextics
    SNU-HU 5th Joint Symposium on Mathematics
    January 25, 2008
    Seoul National University, Seoul, Korea
  32. 数論的 Zariski pairsについて　
    January 15, 2008
    広島大学理学研究科数学教室　談話会
  33. Singular K3 surfaces and non-homeomorphic conjugate varieties　
    Algebraic Geometry and Commutative Algebra Tokyo 2007　
    December 14, 2007
    Graduate School of Mathematical Sciences, The University of Tokyo
  34. 集中講義：　格子理論とK3曲面
    November 26-30, 2007
    東京大学大学院数理科学研究科
  35. Fundamental groups of complements of dual varieties in Grassmannian
    高次元代数多様体とベクトル束の代数幾何学
    September 11, 2007
    九州大学理学部，博多
  36. Transcendental lattices and supersingular reduction lattices of a singular K3 surface
    COE seminar on algebraic geometry
    September 4, 2007
    Keio University, Hiyoshi, Tokyo
  37. Non-homeomorphic conjugate complex varieties
    Singularities in Geometry and Topology
    Fourth Franco-Japanese Symposium on Singularities
    August 30, 2007
    Tateyama Kokusai Hotel, Toyama
  38. Rational double points on K3 surfaces
    Niigata Workshop on Complex Geometry and Singularities
    August 24, 2007
    CrossPal Niigata, Niigata
  39. 数体上定義された特異 K3 曲面
    第52回代数学シンポジウム
    August 08, 2007
    Kobe University
  40. Fundamental groups of complements of dual varieties in Grassmannian
    Conference on Symplectic Geometry
    July 26, 2007
    RIMS, Kyoto
  41. Non-homeomorphic conjugate complex varieties
    6th Polish-Japanese Singularity Theory Working Days
    July 12, 2007
    Sopot, Poland
  42. 分岐曲線の補集合の基本群とリーマン面の単純ブレイド群
    第１回「 分岐被覆に関連する代数幾何とトポロジー」ワークショップ
    June 9, 2007
    東北学院大学工学部多賀城キャンパス
  43. Singular K3 surfaces and arithmetic Zariski pairs
    Seminar Talk
    March 8, 2007
    Vietnam National University, Hanoi
  44. Lectures: On Zariski -van Kampen theorem
    March 6-7, 2007
    Vietnam National University, Hanoi
  45. Transcendental lattices and supersingular reduction lattices of a singular K3 surface
    代数幾何学セミナー
    February 15, 2007
    名古屋大学
  46. On arithmetic Zariski pairs in degree 6
    特異点と基本群のワークショップ
    December 27, 2006
    東京理科大学
  47. On arithmetic Zariski pairs in degree 6
    Mini-workshop on hyperplane arrangements
    December 07, 2006
    Hokkaido University
  48. Singularities of dual varieties in characteristic 3
    International Symposium on singularity theory and its applications
    September 07, 2006
    Changsha, China
  49. Singularities of discriminant varieties in characteristic 2 and 3
    Algebraic Geometry in East Asia II
    October 13, 2005
    Hanoi, Vietnam
  50. Singularity theory in positive characteristics
    Department of Mathematics, National University of Singapore, Seminar Talk
    September 7, 2005
  51. Divisibility of certain Chern numbers
    5th Polish-Japanese Singularity Theory Working Days
    July 19, 2005
    Bukowina Tatrzanska, Poland
  52. Supersingular K3 surfaces as double covers of a projective plane
    Arithmetic and Algebraic Geometry 2004
    December 20, 2004
    University of Tokyo
  53. Supersingular K3 surfaces in characteristic 2
    代数幾何と位相幾何の周辺
    ２００４年１１月２９日
    早稲田大学理工学部
  54. On topological fundamental groups of open algebraic varieties
    4th Polish-Japanese Singularity Theory Woking Days
    September 3, 2004
    Bedlewo, Poland
  55. Ternary codes and supersingular K3 surfaces in characteristic 3
    Tsuda College Mini-Workshop on Calabi-Yau Varieties, Mirror Symmetry and Related Topics
    ２００４年０７月１７日
    津田塾大学
  56. Moduli of supersingular K3 surfaces in characteristic 2
    Korea-Japan Conference on Algebraic Geometry, in honor of Professor Igor Dolgachev on his 60th birthday
    July 5, 2004
    Korea Institute for Advanced Study, Seoul, Korea
  57. 符号と超特異 K3 曲面のモジュライ
    第 21 回代数的組合せ論シンポジウム
    ２００４年０６月２９日
    信州大学理学部大会議室
  58. Moduli curves of supersingular K3 surfaces with Artin invariant 2 in characteristic 2
    代数幾何複素幾何金曜セミナー
    ２００４年０５月２１日
    大阪大学理学部数学教室
  59. 集中講義：代数多様体の基本群
    ２００４年０１月１３日-１５日
    お茶の水大学
  60. Supersingular K3 surfaces
    Conference on Algebra-Geometry-Topology
    25 November, 2003
    Dalat University, Dalat, Vietnam
  61. Supersingular K3 surfaces in characteristic 2 as purely inseparable double covers of projective planes
    談話会
    ２００３年１１月０４日
    北海道教育大学函館校
  62. Supersingular K3 surfaces as double planes
    代数幾何学セミナー
    ２００３年１０月２７日
    名古屋大学多元数理研究科
  63. Supersingular K3 surfaces
    Mathematics of Nonlinear Structure
    Joint Symposium between Seoul National University and Hokkaido University
    October 18, 2003
    Seoul National University, Seoul, Korea
  64. Supersingular K3 surfaces
    3rd Japanese-Polish Singularity Theory Working Days
    September 28, 2003
    Hokkaido University
  65. Supersingular K3 surfaces as double covers of the projective plane
    代数曲線束の局所不変量の研究
    ２００３年６月１８日
    京都大学数理解析研究所
  66. Variations on Zariski-van Kampen Theorem
    火曜トポロジーセミナー
    ２００３年６月１７日
    東京大学大学院数理科学研究科
  67. 開代数多様体の基本群
    ENCOUNTER with MATHEMATICS 第27回 分岐被覆と基本群 --代数幾何とトポロジーの接点 --
    ２００３年４月１２日
    中央大学理工学部
  68. Supersingular K3 surfaces as double covers of the projective plane
    Department of Mathematics, National University of Singapore, Seminar Talk
    March 26, 2003
  69. Rational double points on supersingular K3 surfaces
    神戸大学CAセミナー
    ２００２年１１月１９日
  70. 集中講義：代数多様体の基本群
    ２００２年１１月１８日-２２日
    神戸大学
  71. Rational double points on supersingular K3 surfaces
    代数幾何学シンポジウム
    ２００２年１０月２３日
    兵庫県立城崎大会議館
  72. Rational double points on K3 surfaces
    Singularites franco-japonaises
    September 12, 2002
    CIRM, Luminy, France
  73. Elliptic K3 surfaces
    長沙電力学院, 湖南省, 中国
    June 6, 2002
  74. Variations of Zariski-van Kampen Theorem
    The fundamental group of algebraic varieties, Hokkaido University
    July 25, 2002
  75. 1. The fundamental groups of algebraic fiber spaces
    2. Vanishing cycles and the generalized Hodge conjecture
    Korea Institute for Advanced Study, Mathematics Seminars
    October 24, 2001
  76. Vanishing cycles and the generalized Hodge conjecture
    Polish-Japanese Singularity Theory Working Days September 20-27 , 2001
    The Mathematical Conference Center, Benlewo, Poland
  77. Equisingular families of plane curves with many connected components
    Algebraic Geometry in East Asia August 9, 2001
    International Institute for Advanced Studies (IIAS)
  78. The fundamental groups of algebraic fiber spaces
    Singularities and Related Subjects, Second Workshop In Changchun, July 8-10, 2001
    Northeast Normal University, Changchun, China
  79. Vanishing cycles and the generalized Hodge conjecture
    International Symposium on Singularity Theory and Its Applications, July 4-6, 2001
    Beijing University of Chemical Technology, Beijing, China
  80. Lectures on Zariski-van Kampen Theorem
    08-21 May, 2001
    Dalat University, Vietnam
  81. Lattices of algebraic cycles on Fermat varieties in positive characteristics
    Arithemetic and Algebraic Geometry, January 15-18, 2001
    Graduate School of Mathematical Sciences, The University of Tokyo
  82. 非可換基本群をもつZariski pairについて
    Branched Galois covers and related topics, ２０００年１２月１１日-１３日
    高知大学
  83. Fermat格子について
    名古屋大学多元数理研究科談話会
    ２０００年１２月６日
  84. 集中講義：消失サイクルの幾何学と一般Hodge予想
    ２０００年１２月４日-７日
    名古屋大学
  85. On elliptic K3 surfaces
    The mini workshop on explicit moduli in Sapporo, August 01-04, 2000
    Hokkaido University
  86. Lattices of algebraic cycles on Fermat varieties in positive characteristics
    有限群論と代数的組合せ論, 　 ２０００年１月１７日
    京都大学 数理解析研究所

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