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)：

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MISC (3)：

笠川良司. シンプレクティック微分同相群のコサイクルについて. リーマン面に関連する位相幾何学2020予稿集. 2020. 42-52
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. 127-136-136
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. 78-84-84

Lectures and oral presentations (21)：

A 2-cocycle on an extension of the symplectomorphism group
(2024)
シンプレクティック微分同相群のコサイクルについて
(研究集会「リーマン面に関連する位相幾何学」 2020)
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)

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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

Work history (5)：

2014/04 - 現在 'Nihon University, College of Science&Technology, Department of Mathematics', Associate Professor
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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