### Director's Seminar

#### [IBS-CGP Seminar]

#### January 31, 2018 –

#### CGP Main Hall

This seminar will be a continuous series of talks on "Quantum Entanglement and related topics". Quantum entanglement is one of the most fundamental features of quantum mechanics. It is a physical phenomenon that performing a local measure may instantaneously affect the outcome of local measurements far away. The concept of entanglement occurs in various areas such as in quantum information theory, communication and quantum computing. A rich field of research concerns the understanding of the role of entanglement in many body systems. In that regard, the theory can be applied to the study of knots and links in 3 manifolds by the `replica trick'. In this seminar, we will aim at learning the basics of quantum entanglement theory, understanding their applications to related areas such as Chern-Simons theory, and black hole dynamics and searching for other possible mathematical applications.

#### Organizer

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

#### Talk(s)

- Reading seminar on symplectic and birational geometry
- 15:30 – 16:00, 2023-12-06 at CGP Delta
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Quantum Entanglement and related topics
- 14:00 – 16:00, 2023-05-17 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Quantum Entanglement and related topics
- 16:00 – 18:00, 2023-04-28 at CGP Main Hall
- Norton Lee (IBS Center for Geometry and Physics)

- Quantum Entanglement and related topics
- 14:00 – 16:00, 2023-04-19 at CGP Main Hall
- Norton Lee (IBS Center for Geometry and Physics)

- Quantum Entanglement and related topics
- 14:00 – 16:00, 2023-04-12 at CGP Main Hall
- Hisayoshi Muraki (IBS Center for Geometry and Physics)

- Organizational Meeting
- 14:00 – 16:00, 2023-04-05 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- On construction of open descendant potentials in all genera II
- 13:30 – 15:30, 2022-04-20 at Math. Bldg. #404
- Alexander Aleksandrov (IBS Center for Geometry and Physics)

- On construction of open descendant potentials in all genera
- 13:30 – 15:30, 2022-04-13 at Math. Bldg. #404
- Alexander Aleksandrov (IBS Center for Geometry and Physics)

- Open Gromov-Witten invariants: their definition, obstruction and wall-crossing
- 13:30 – 15:30, 2022-04-06 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Birational Calabi-Yau manifolds have the same small quantum product
- 13:30 – 15:30, 2020-05-20 at CGP Main Hall
- Yifan Li (IBS Center for Geometry and Physics)

- Birational Calabi–Yau n-folds have the same Zeta functions.
- 13:00 – 15:00, 2020-05-13 at CGP Main Hall
- Jun Yong Park (IBS Center for Geometry and Physics)

- Quantum cohomology ring of birational Calabi-Yau manifolds
- 13:30 – 15:30, 2020-05-06 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Cluster structure for Vianna’s Lagrangian tori
- 13:30 – 15:30, 2020-02-05 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Cluster algebras, quiver representations and Caldero-Chapoton formula
- 13:30 – 15:30, 2020-01-22 at CGP Main Hall
- Jongmyeong Kim (IBS Center for Geometry and Physics)

- Introduction to cluster structures II
- 16:00 – 18:00, 2019-12-18 at CGP Main Hall
- Eunjeong Lee (IBS Center for Geometry and Physics)

- Introduction to cluster structures I
- 13:30 – 15:30, 2019-12-11 at CGP Main Hall
- Eunjeong Lee (IBS Center for Geometry and Physics)

- 'Organizational meeting' for `Cluster algebra and related topics'
- 13:30 – 15:30, 2019-11-27 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Wall-crossing formula and Floer theory VI
- 13:30 – 15:30, 2019-11-13 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Wall-crossing formula and Floer theory V
- 13:30 – 15:30, 2019-11-06 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Wall-crossing formula and Floer theory IV
- 13:30 – 15:30, 2019-10-23 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Wall-crossing formula and Floer theory III
- 13:30 – 15:30, 2019-09-18 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- On SYZ fibrations
- 13:30 – 15:30, 2019-09-04 at CGP Main Hall
- Yat-Hin Suen (IBS Center for Geometry and Physics)

- Wall crossing formula and Floer homology II
- 13:30 – 15:30, 2019-08-21 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Wall crossing formula and Floer homology I
- 13:30 – 15:30, 2019-08-14 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Augmentations and sheaves for Legendrian graphs
- 13:30 – 15:30, 2019-07-31 at CGP Main Hall
- Tao Su (Ecole Normale Superieure - CNRS)

- Involutive Lie bialgebras: Algebra II
- 13:30 – 15:30, 2019-06-05 at CGP Main Hall
- Gabriel C. Drummond-Cole (IBS Center for Geometry and Physics)

- Involutive Lie bialgebras: Algebra
- 13:30 – 15:30, 2019-05-15 at CGP Main Hall
- Gabriel C. Drummond-Cole (IBS Center for Geometry and Physics)

- Arboreal singularities
- 13:30 – 15:30, 2019-02-13 at CGP Main Hall
- Byung Hee An (IBS Center for Geometry and Physics)

- Introduction to Okounkov body II
- 13:30 – 15:30, 2018-05-16 at CGP Main Hall
- Joonyeong Won (IBS Center for Geometry and Physics)

- Introduction to Okounkov body
- 13:30 – 15:30, 2018-05-09 at CGP Main Hall
- Joonyeong Won (IBS Center for Geometry and Physics)

- Variation of GIT and wall crossing II
- 13:30 – 15:30, 2018-04-04 at CGP Main Hall
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- Variation of GIT and wall crossing
- 13:30 – 15:30, 2018-03-21 at CGP Main Hall
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- Wall-crossing formula III
- 13:30 – 15:30, 2018-03-07 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Wall-crossing formula II
- 13:30 – 15:30, 2018-02-21 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)

- Wall-crossing formula
- 13:30 – 15:30, 2018-01-31 at CGP Main Hall
- Yong-Geun Oh (IBS Center for Geometry and Physics & POSTECH)