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J-GLOBAL ID：200901060404329465   Update date: Jan. 31, 2024

Usui Sampei

ウスイ サンペイ | Usui Sampei
Affiliation and department：
Osaka University Graduate School of Science, Department of Mathematics

About Osaka University Graduate School of Science, Department of Mathematics


Job title： Professor Emeritus
Research field  (1)： Algebra
Research keywords  (6)： Log幾何学 ,  Hodge理論 ,  代数幾何学 ,  Log Geometry ,  Hodge Theory ,  Algebraic Geometry
Research theme for competitive and other funds  (49)：
  • 2022 - 2027 Periods of integral for log smooth families
  • 2017 - 2023 Construction and evolution of log Hodge theory and applications of the fundamental diagram to geometry
  • 2012 - 2017 Studies of fibred complex surfaces from diversified perspectives
  • 2014 - 2016 ツイスター空間の幾何学
  • 2011 - 2016 Theory of mixed log Hodge structures and its applications
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Papers (43)：
ｍore...
MISC (5)：
  • Kazuya Kato, Sampei Usui. Classifying spaces of degenerating polarized Hodge structures. 2009
  • Akira Ohbuchi, Kazuhiro Konno, Sampei Usui, Atsushi Moriwaki, Noboru Nakayama. Algebraic Geometry in East Asia. 2002
  • Sampei Usui, Mark Green, Luc Illusie, Kazuya Kato, Eduard Looijenga, Shigeru Mukai, Shuji Saito. Algebraic Geometry 2000, Azumino. Math. Soc. Japan, Advanced Studies in Pure Math. 2002. 36
  • Log Geometry入門. Hodge理論と代数幾何学、1995年、金沢大学. 1996. 1-11
  • USUI Sampei. EXAMPLE OF SEMI-STABLE DEGENERATIONS OF KUNEV SURFACES. RIMS Kokyuroku. 1987. 634. 124-143
Books (6)：
  • Examples of semi-stable degenerations of Kunev surfaces
    Proc. Algebraic Geometry, Singapore, 1987 World Scientific 1988
  • Examples of semi-stable degenerations of Kunev surfaces
    Proc. Algebraic Geometry, Singapore, 1987 World Scientific 1988
  • Deformation and local Torelli theorem for certain surfaces of general type
    Summer Meeting on Algebraic Geometry, Copenhagen 1978, Lect. Notes Math. , Springer-Verlag 1979
  • Deformation and local Torelli theorem for certain surfaces of general type
    Summer Meeting on Algebraic Geometry, Copenhagen 1978, Lect. Notes Math. , Springer-Verlag 1979
  • Local Torelli Theorem for some non-singular weighted complete intersections
    Internat. Symp. on Algebraic Geometry, Kyoto 1977, Kinokuniya Book-Store 1978
ｍore...
Works (1)：
  • 代数曲線束の諸相
    2005 -
Education (4)：
  • - 1977 Kyoto University
  • - 1977 Kyoto University Graduate School, Division of Natural Science
  • - 1972 Kyoto University Faculty of Science
  • - 1972 Kyoto University Faculty of Science
Professional career (3)：
  • Doctrat d' Etat (Université de Paris, Centre d'Orsay)
  • Doctor of Sciences (Kyoto University)
  • Master of Science (Kyoto University)
Work history (10)：
  • 2015/04 - 現在 Osaka University Professor Emeritus
  • 1994/04 - 2015/03 Osaka University Graduate School of Science Professor
  • 1990 - 1994 大阪大学 教授 (教養部)
  • 1990 - 1994 Osaka University, Professor (Faculty of Education)
  • 1979 - 1990 Kochi University
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Committee career (1)：
  • 2001 - 日本数学会 Japanese Journal of Mathematics 編集委員
Association Membership(s) (1)：
日本数学会
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