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List of talks given in English (2000-)

  1. Supersingular K3 surfaces and lattice theory
    5th Pacific Rim Conference on Mathematics
    21 January, 2010
    University of Tokyo
  2. Lattices of algebraic cycles in positive characteristics
    5th Pacific Rim Conference on Mathematics
    02 July, 2010
    Stanford University
  3. 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
  4. On lattice-invariants of complex algebraic surfaces and their applications slides
    Symposium in algebraic geometry
    28 December, 2009
    Busan, Korea
  5. Transcendental lattices of complex algebraic surfaces slides
    Tohoku-Fudan joint symposium on algebraic geometry
    25 November, 2009
    Tohoku University, Sendai
  6. Remarks on Zariski pairs of surfaces in the projective space
    Seminar Talk
    24 September, 2009
    Fudan University, ShangHai, China
  7. Zariski pairs of normal surfaces in P^3
    The 5th Franco-Japanese Symposium on Singularities
    27 August, 2009
    IRMA, Strasbourg, France
  8. On lattice-theoretic invariants of curves on a surface slides
    The 2nd MSJ-SI Arrangements of Hyperplanes
    12 August, 2009
    Hokkaido University, Sapporo
  9. Links of hypersurface simple K3 singularities (joint work with A. Katanaga)
    Hodge theory and algebraic geometry
    3 July, 2009
    RIMS, Kyoto
  10. Zariski pairs and lattice theory slides
    Antalya Algebra Days XI
    24 May, 2009
    Antalya, Turk
  11. Zariski pairs and lattice theory
    General Seminar
    18 May, 2009
    Bilkent University, Ankara, Turk
  12. Splitting curves for the double covering branching along a plane curve of degree 6
    The 4-th Algebra-Geometry-Analysis seminar
    18 February, 2009
    Kagoshima University
  13. On equisingular families of plane curves of degree 6 slides
    Arithmetic and Algebraic Geometry Related to Moduli Spaces
    19 January, 2009
    University of Tokyo
  14. 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
  15. Splitting curves for the double covering branching along a plane curve of degree 6
    16 December, 2008
    Singularity Seminar, Tokyo University of Science
  16. Generalized Zariski-van Kampen theorem
    13 November, 2008
    Algebraic Geometry in East Asia, KIAS, Seoul
  17. Splitting curves for double sextic planes
    07 November, 2008
    Algebraic Geometry in Positive Characteristics and Related Topics, Nagoya University
  18. Generalized Zariski-van Kampen theorem and its application to Grassmannian dual varieties
    27 August, 2008
    Colloquium at Department of Mathematics, National University of Singapore
  19. Topology and arithmetic of maximizing sextics
    SNU-HU 5th Joint Symposium on Mathematics
    January 25, 2008
    Seoul National University, Seoul, Korea
  20. 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
  21. Transcendental lattices and supersingular reduction lattices of a singular K3 surface
    COE seminar on algebraic geometry
    September 4, 2007
    Keio University, Hiyoshi, Tokyo
  22. Non-homeomorphic conjugate complex varieties
    Singularities in Geometry and Topology
    Fourth Franco-Japanese Symposium on Singularities
    August 30, 2007
    Tateyama Kokusai Hotel, Toyama
  23. Rational double points on K3 surfaces
    Niigata Workshop on Complex Geometry and Singularities
    August 24, 2007
    CrossPal Niigata, Niigata
  24. Fundamental groups of complements of dual varieties in Grassmannian
    Conference on Symplectic Geometry
    July 26, 2007
    RIMS, Kyoto
  25. Non-homeomorphic conjugate complex varieties
    6th Polish-Japanese Singularity Theory Working Days
    July 12, 2007
    Sopot, Poland
  26. Singular K3 surfaces and arithmetic Zariski pairs
    Seminar Talk
    March 8, 2007
    Vietnam National University, Hanoi
  27. Lectures: On Zariski -van Kampen theorem
    March 6-7, 2007
    Vietnam National University, Hanoi
  28. On arithmetic Zariski pairs in degree 6
    Mini-workshop on hyperplane arrangements
    December 07, 2006
    Hokkaido University
  29. Singularities of dual varieties in characteristic 3
    International Symposium on singularity theory and its applications
    September 07, 2006
    Changsha, China
  30. Singularities of discriminant varieties in characteristic 2 and 3
    Algebraic Geometry in East Asia II
    October 13, 2005
    Hanoi, Vietnam
  31. Singularity theory in positive characteristics
    Department of Mathematics, National University of Singapore, Seminar Talk
    September 7, 2005
  32. Divisibility of certain Chern numbers
    5th Polish-Japanese Singularity Theory Working Days
    July 19, 2005
    Bukowina Tatrzanska, Poland
  33. Supersingular K3 surfaces as double covers of a projective plane
    Arithmetic and Algebraic Geometry 2004
    December 20, 2004
    University of Tokyo
  34. On topological fundamental groups of open algebraic varieties
    4th Polish-Japanese Singularity Theory Woking Days
    September 3, 2004
    Bedlewo, Poland
  35. 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
  36. Supersingular K3 surfaces
    Conference on Algebra-Geometry-Topology
    25 November, 2003
    Dalat University, Dalat, Vietnam
  37. Supersingular K3 surfaces
    Mathematics of Nonlinear Structure
    Joint Symposium between Seoul National University and Hokkaido University
    October 18, 2003
    Seoul National University, Seoul, Korea
  38. Supersingular K3 surfaces
    3rd Japanese-Polish Singularity Theory Working Days
    September 28, 2003
    Hokkaido University
  39. Supersingular K3 surfaces as double covers of the projective plane
    Department of Mathematics, National University of Singapore, Seminar Talk
    March 26, 2003
  40. Rational double points on K3 surfaces
    Singularites franco-japonaises
    September 12, 2002
    CIRM, Luminy, France
  41. Elliptic K3 surfaces
    Changsha, China
    June 6, 2002
  42. Variations of Zariski-van Kampen Theorem
    The fundamental group of algebraic varieties, Hokkaido University
    July 25, 2002
  43. 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
  44. Vanishing cycles and the generalized Hodge conjecture
    Polish-Japanese Singularity Theory Working Days September 20-27 , 2001
    The Mathematical Conference Center, Benlewo, Poland
  45. Equisingular families of plane curves with many connected components
    Algebraic Geometry in East Asia August 9, 2001
    International Institute for Advanced Studies (IIAS)
  46. The fundamental groups of algebraic fiber spaces
    Singularities and Related Subjects, Second Workshop In Changchun, July 8-10, 2001
    Northeast Normal University, Changchun, China
  47. 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
  48. Lectures on Zariski-van Kampen Theorem
    08-21 May, 2001
    Dalat University, Vietnam
  49. 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
  50. On elliptic K3 surfaces
    The mini workshop on explicit moduli in Sapporo, August 01-04, 2000
    Hokkaido University

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