Morimichi Kawasaki, Ryuma Orita. Rigid fibers of integrable systems on cotangent bundles. Journal of the Mathematical Society of Japan. 2021
Morimichi Kawasaki, Ryuma Orita. Existence of pseudoheavy fibers of moment maps. Communications in Contemporary Mathematics. 2020. 23. 05. 2050047-2050047
Ryuma Orita. On the existence of infinitely many non-contractible periodic orbits of Hamiltonian diffeomorphisms of closed symplectic manifolds. Journal of Symplectic Geometry. 2020. 17. 6. 1893-1927
Ryuma Orita. Disjoint superheavy subsets and fragmentation norms. Journal of Topology and Analysis. 2019. 13. 02. 443-468
Ryuma Orita. Application of fragmentation norms to transported points by Hamiltonian isotopies. RIMS Kôkyûroku. 2018. 2098