Rchr
J-GLOBAL ID:200901020167182436   Update date: May. 03, 2020

Kasagawa Ryoji

カサガワ リョウジ | Kasagawa Ryoji
Affiliation and department:
Job title: Associate Professor
Research field  (2): Mathematical analysis ,  Geometry
Research keywords  (5): symplectomorphism group ,  characteristic classes ,  mapping class groups ,  surfaces ,  Topology
Papers (6):
  • A second cohomology class of the symplectomorphism group with the discrete topology. Algebraic & Geometric Topology. 2018. 18. 1. 187-219
  • Ryoji Kasagawa. On crossed homomorphisms of the volume preserving diffeomorphism groups. Pacific Journal of Mathematics. 2013. 265. 2. 455-490
  • Ryoji Kasagawa. On crossed homomorphisms on symplectic mapping class groups. Transaction of American Mathematical Society. 2008. 360. 9. 4815-4839
  • Ryoji Kasagawa. On a function on the mapping class group of a surface of genus 2. Topology and its Applications. 2000. 102. 3. 219-237
  • Ryoji Kasagawa. Some examples of Lagrangian submanifolds of the moduli space of flat connections. Journal of Mathematics of Kyoto University. 1999. 39. 1. 25-39
more...
MISC (2):
  • 笠川良司. DIRAC OPERATORS AND HYPERELLIPTIC MAPPING CLASS GROUPS. 京都大学数理解析研究所 数理解析研究所講究録. 2001. 1223. 127-136
  • 笠川良司. SOME REPRESENTATIONS OF SUBGROUPS OF THE MAPPING CLASS GROUPS OF SURFACES AND SECONDARY INVARIANTS. 京都大学数理解析研究所 数理解析研究所講究録. 2000. 1163. 78-84
Lectures and oral presentations  (19):
  • シンプレクティック微分同相群のコサイクルについて
    (トポロジープロジェクト研究集会「接触構造、特異点、微分方程式及びその周辺」 2020)
  • On a 2-cocycle of the symplectomorphism group
    (第41回伊豆トポロジーセミナー 2018)
  • On crossed homomorphisms of the groups of volume preserving diffeomorphisms of closed manifolds
    (Workshop:Johnson homomorphisms 2013)
  • 体積保存微分同相群の捩れ準同型について
    (研究集会「非可換幾何学と数理物理学2012」 2012)
  • 体積保存微分同相群の捩れ準同型について
    (「鳥羽微分トポロジー2012」研究集会 2012)
more...
Education (2):
  • - 1999 Tokyo Institute of Technology Graduate School, Division of Science and Engineering 数学
  • - 1990 Tokyo Institute of Technology Faculty of Science 数学
Professional career (2):
  • Doctor of Science (Tokyo Institute of Technology)
  • Master of Science (Tokyo Institute of Technology)
Work history (4):
  • 2014/04 - 'Nihon University, College of Science&Technology, Department of Mathematics', Associate Professor
  • 2005/04 - 2014/03 'Nihon University, College of Science&Technology, Department of Mathematics', Lecturer
  • 2000/04 - 2005/03 'Nihon University, College of Science&Technology, Department of Mathematics', Assistant
  • 2000/03 - 2001/03 Research Fellow of the Japan Society for the Promotion of Science
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