Morse-Bott-Smale chain complex
Osaka-Tsukuba Online Workshop on Complex Geometry and Dynamics · Online (Zoom)
Talks
2026
2025
Morse-Bott-Smale chain complex
The 2nd Niigata Young Algebra and Geometry Symposium · Niigata University, Japan
2024
Floer-type bipersistence modules and rectangle barcodes
Workshop on geometry of foliations and its applications · Kyoto University of Education, Japan
Morse bipersistence modules and rectangle barcodes
Singularity Theory and its related fields · Chitose Arcadia Plaza, Japan
2023
Topological complexity of monotone symplectic manifolds
The 7th Workshop on Geometric Group Theory · Niigata Unison Plaza, Japan
2022
2021
A hierarchy of rigid subsets of symplectic manifolds
AS-NCTS Seminar on Geometry · Academia Sinica & NCTS, National Taiwan University (Webex)
Rigid fibers of integrable systems on cotangent bundles
The 3rd Japan-Taiwan Joint Conference on Differential Geometry · OCAMI, Osaka City University & NCTS, National Taiwan University (Webex)
2020
Pseudoheavy subsets in symplectic manifolds
12th International Symposium on Natural Sciences · Incheon National University, South Korea (Zoom)
Rigid fibers of spinning tops
Contact Structures, Singular Points, and Related Topics · Shizuoka, Japan
2019
Rigid fibers of spinning tops
International workshop on Geometry of Foliated Spaces · Ritsumeikan University, Japan
Existence of pseudo-heavy fibers of moment maps
Differential Topology Seminar · Kyoto University, Japan
The number of fixed points of Hamiltonian diffeomorphisms
Seminar · Seoul National University, South Korea
From Morse homology to Floer homology II
Seminar · Korea Institute for Advanced Study (KIAS), South Korea
From Morse homology to Floer homology I
Seminar · Korea Institute for Advanced Study (KIAS), South Korea
2018
Periodic orbits of Hamiltonian systems and Floer theory II
Topics on Lagrangian submanifolds and Hamiltonian dynamics · Chiba University, Japan
Periodic orbits of Hamiltonian systems and Floer theory I
Topics on Lagrangian submanifolds and Hamiltonian dynamics · Chiba University, Japan
Disjoint superheavy subsets and fragmentation norms
Geometry Seminar · Tokyo Metropolitan University, Japan
2017
The number of fixed points of Hamiltonian diffeomorphisms
15th Taiwan Geometry Symposium · National Tsing Hua University, Taiwan
Asphericity, Eilenberg–MacLane spaces and periodic orbits in Hamiltonian dynamics
Seminar · IBS Center for Geometry and Physics, South Korea
Asphericity and non-contractible periodic orbits in Hamiltonian dynamics
East Asian Symplectic Conference 2017 · Sichuan University, China
Floer theory and non-contractible periodic orbits
NCTS Differential Geometry Seminar · National Taiwan University, Taiwan
Floer–Novikov theory and non-contractible periodic orbits
64th Geometry Symposium · Kanazawa University, Japan
On the existence of infinitely many non-contractible periodic orbits in Hamiltonian dynamics on closed symplectic manifolds
Hamiltonian and Reeb Dynamics, New Methods and Applications · Lorentz Center, The Netherlands
Floer–Novikov theory and non-contractible periodic trajectories
Topology Seminar · Gakushuin University, Japan
Floer–Novikov theory and non-contractible periodic trajectories
Topology Seminar · Kyushu University, Japan
On the existence of infinitely many non-contractible periodic trajectories in Hamiltonian dynamics on closed symplectic manifolds
Tuesday Seminar on Topology · The University of Tokyo, Japan
On the existence of infinitely many non-contractible periodic trajectories in Hamiltonian dynamics on closed symplectic manifolds
Contact Structures, Singular Points, and Related Topics · Kanazawa University, Japan
2016
Non-contractible periodic orbits in Hamiltonian dynamics on tori
Geometry Seminar · Tokyo Metropolitan University, Japan
Non-contractible periodic orbits in Hamiltonian dynamics on tori
Workshop on Symplectic Geometry and Physics · Tohoku University, Japan
2014
Morse–Bott inequalities for manifolds with boundary
11th Kanto Young Geometers’ Seminar · Waseda University, Japan
Morse–Bott inequalities for manifolds with boundary
Morse Theory and Related Topics · Kyoto University, Japan
2012
Morse homology of Grassmann manifolds
Geometry and Transformation Groups 2012 · Tambara Institute of Mathematical Sciences, The University of Tokyo, Japan