Ryuma ORITA
Associate Professor, Department of Mathematics, Niigata University
I am an Associate Professor in the Department of Mathematics at Niigata University. My research is in topology and symplectic geometry. In particular, I am interested in Morse theory, Hamiltonian dynamics, persistence modules, and topological complexity.
News#
- July 23, 2026 · “Maximal topological complexity of monotone symplectic 4-manifolds” was posted on arXiv.
- June 30, 2026 · “Relative simplicity of the universal coverings of transformation groups and Tsuboi’s metric” was published in Journal of Topology and Analysis.
Education and positions#
| Period | Position / Degree | Affiliation |
|---|---|---|
| 2024.7 – | Associate Professor | Niigata University |
| 2020.3 – 2024.6 | Assistant Professor | Niigata University |
| 2018.4 – 2020.2 | JSPS Research Fellow (PD) | Tokyo Metropolitan University |
| 2017.8 – 2018.3 | Postdoctoral Fellow | National Center for Theoretical Sciences (NCTS) |
| 2017.3 | Ph.D. in Mathematical Sciences | The University of Tokyo |
| 2014.4 – 2017.3 | JSPS Research Fellow (DC1) | The University of Tokyo |
| 2014.3 | Master of Mathematical Sciences | The University of Tokyo |
| 2012.3 | Bachelor of Science | Kyushu University |