Workshop on Symplectic Geometry and Related Topics

Dates: March 18 (Wed) -- 20 (Fri), 2026.

Venues: Graduate School of Sciences, The University of Osaka (Toyonaka Campus), (access)

Room E301/303 (3rd floor in the Building E) (March 18)
Room E404/406/408 (4th floor in the Building E) (March 19, 20)

Registration: (register here)

Participation in the workshop is open to everyone without prior registration.

However, if you plan to join the workshop dinner, please register via the link above by March 10.

Even if you do not plan to join the dinner, we would appreciate advance registration, as it will help us estimate attendance and make necessary arrangements.

（参加登録がなくてもworkshopにはご参加いただけますが，ご協力をおねがいします．）

Confirmed speakers:

Russell Avdek (Sorbonne University)
Álvaro del Pino (Universiteit Utrecht)
Tomoya Hayakawa (The University of Tokyo)
Axel Husin (RIMS, Kyoto University)
Naohiko Kasuya (Hokkaido University)
Morimichi Kawasaki (Hokkaido University)
Noboru Ogawa (Tokai University)
Yukihiro Okamoto (Tokyo Metropolitan University)
Kentaro Yamaguchi (RIMS, Kyoto University)

Program: (Program and Abstracts, pdf-file)

March 18 (Wed)

9:30 - 10:30

Yukihiro Okamoto (Tokyo Metropolitan University)

Non-contractible loops of Legendrian tori from families of knots

11:00 - 12:00

Axel Husin (RIMS, Kyoto University)

Local systems and vanishing Maslov class

14:00 - 15:00

Russell Avdek (Sorbonne University)

Numerical invariants of codim = 2 contact submanifolds

15:30 - 16:30

Naohiko Kasuya (Hokkaido University)

Lefschetz fibrations on the Milnor fibers of cusp and simple elliptic singularities

March 19 (Thu)

9:30 - 10:30

Tomoya Hayakawa (The University of Tokyo)

On fillability of contact manifolds associated with fat SO(3)-bundles

11:00 - 12:00

Russell Avdek (Sorbonne University)

Exotic codim = 2 contact submanifolds in high dimensions

14:00 - 15:00

Álvaro del Pino (Universiteit Utrecht)

Rigidity for prelegendrian submanifolds of fat distributions (1)

15:30 - 16:30

Noboru Ogawa (Tokai University)

Contact contractions and Liouville dynamics

March 20 (Fri)

9:30 - 10:30

Kentaro Yamaguchi (RIMS, Kyoto University)

Moment polytopes of subtorus orbit closures in symplectic toric manifolds

11:00 - 12:00

Álvaro del Pino (Universiteit Utrecht)

Rigidity for prelegendrian submanifolds of fat distributions (2)

14:00 - 15:00

Morimichi Kawasaki (Hokkaido University)

Non-extendability of Shelukhin’s quasi-morphism from Hamiltonian to symplectic

Workshop dinner: Thursday, March 19.

Organizers:

Jiro Adachi (Hokkaido University)

Tomohiro Asano (Kyoto University)
Takahiro Oba (The University of Osaka) taka.oba@math.sci.osaka-u.ac.jp

Supported by :

JSPS KAKENHI 22K03305 (Jiro Adachi)
JSPS KAKENHI 24K16920 (Tomohiro Asano)
JSPS KAKENHI 22K13913 (Takahiro Oba)