### Mini-workshop on Low-dimensional Topology

#### [IBS-CGP Workshop]

#### April 25 – 27, 2023

#### Math. Bldg. #404

#### Organizers

Yong-Geun Oh (IBS Center for Geometry and Physics, POSTECH)

Anderson Vera (IBS Center for Geometry and Physics)

#### Invited Lecturers

Yuka Kotorii (Hiroshima University )

Gwénaël Massuyeau (University of Burgundy)

#### Invited Speakers

Hyungryul Baik (Korea Advanced Institute of Science and Technology)

Seonmi Choi (Kyungpook National University)

Hongtaek Jung (Seoul National University)

Sungkyung Kang (IBS Center for Geometry and Physics)

Byeohri Kim (Pohang University of Science and Technology)

Seonhwa Kim (University of Seoul)

Minkyoung Song (Korea Science Academy of KAIST)

Arthur Soulié (IBS Center for Geometry and Physics)

#### Talk(s)

- One stabilization is not enough for exotic contractible 4-manifolds
- 15:45 – 16:45, 2023-04-27 at Math. Bldg. #404
- Sungkyung Kang (IBS Center for Geometry and Physics)

- On homological representations for braid groups and mapping class groups
- 14:15 – 15:15, 2023-04-27 at Math. Bldg. #404
- Arthur Soulié (IBS Center for Geometry and Physics)

- On a smoothing technique of topological surfaces in 4-manifolds
- 10:45 – 11:45, 2023-04-27 at Math. Bldg. #404
- Byeohri Kim (Pohang University of Science and Technology)

- Lecture Series I (Part 2) Mapping class groups of surfaces: subgroups and infinitesimal representations
- 09:00 – 10:15, 2023-04-27 at Math. Bldg. #404
- Gwénaël Massuyeau (University of Burgundy)

- Normal generators of mapping class groups
- 15:45 – 16:45, 2023-04-26 at Math. Bldg. #404
- Hyungryul Baik (Korea Advanced Institute of Science and Technology)

- On the rigidity of three-dimensional Polyhedra
- 14:15 – 15:15, 2023-04-26 at Math. Bldg. #404
- Seonhwa Kim (University of Seoul)

- Lecture Series II (Part 2) On ribbon Yetter-Drinfeld modules and tangle invariants
- 10:45 – 12:00, 2023-04-26 at Math. Bldg. #404
- Yuka Kotorii (Hiroshima University )

- Groups acting on the circle with invariant veering pairs
- 09:15 – 10:15, 2023-04-26 at Math. Bldg. #404
- Hongtaek Jung (Seoul National University)

- Marked graph mosaics
- 15:45 – 16:45, 2023-04-25 at Math. Bldg. #404
- Seonmi Choi (Kyungpook National University)

- Homology cylinder, as generalization of both string link and mapping class group
- 14:15 – 15:15, 2023-04-25 at Math. Bldg. #404
- Minkyoung Song (Korea Science Academy of KAIST)

- Lecture Series II (Part 1) On ribbon Yetter-Drinfeld modules and tangle invariants
- 10:45 – 12:00, 2023-04-25 at Math. Bldg. #404
- Yuka Kotorii (Hiroshima University )

- Lecture Series I (Part 1) Mapping class groups of surfaces: subgroups and infinitesimal representations
- 09:00 – 10:15, 2023-04-25 at Math. Bldg. #404
- Gwénaël Massuyeau (University of Burgundy)

#### Registration

Online registration is not available.

#### External Link

#### Contacts

- Soon Ok Jung (sojung@ibs.re.kr)