### Algebraic Geometry Seminar

#### [IBS-CGP Seminar]

#### September 13, 2013 –

#### IBS POSTECH Campus Bldg. #301

#### Organizer

Jihun Park (IBS Center for Geometry and Physics, POSTECH)

#### Talk(s)

- TBA
- 16:15 – 17:45, 2024-04-30 at IBS POSTECH Campus Bldg. #301
- Luca Rizzi (IBS Center for Geometry and Physics)

- TBA
- 17:30 – 18:30, 2024-04-23 at IBS POSTECH Campus Bldg. #301

- TBA
- 16:15 – 17:15, 2024-04-23 at IBS POSTECH Campus Bldg. #301

- Castelnuovo Curves
- 16:15 – 17:45, 2024-03-26 at IBS POSTECH Campus Bldg. #301
- Gerriet Martens (University of Erlangen-Nürnberg)

- Deformations of weighted homogeneous surface singularities
- 16:15 – 17:45, 2024-03-19 at IBS POSTECH Campus Bldg. #301
- Jaekwan Jeon (IBS Center for Geometry and Physics)

- DM stacks from surfaces and local Calabi-Yau 3-folds
- 16:00 – 18:00, 2023-12-06 at IBS POSTECH Campus Bldg. #301
- Sung Woo Nam (Pohang University of Science and Technology)

- Automorphism groups of affine varieties with at most one $\mathbb{G}_a$-action
- 16:00 – 18:00, 2023-11-22 at IBS POSTECH Campus Bldg. #301
- Alexander Perepechko (HSE University)

- Birational Models of Fano hypersurfaces and K-stability
- 16:00 – 18:00, 2023-11-07 at IBS POSTECH Campus Bldg. #301
- Tiago Duarte Guerreiro (University of Essex)

- Sarkisov links of projective 3-space initiated by a divisorial contraction with centre a point
- 16:00 – 18:00, 2023-10-24 at IBS POSTECH Campus Bldg. #301
- Erik Paemurru (Saarland University)

- Automorphism groups of del Pezzo surfaces
- 11:00 – 12:00, 2023-08-30 at IBS POSTECH Campus Bldg. #301
- Aurore Boitrel (Université d'Angers)

- Non-maximality of algebraic subgroups of Cremona groups
- 16:00 – 18:00, 2023-08-29 at IBS POSTECH Campus Bldg. #301
- Susanna Zimmermann (University of Paris-Saclay)

- Asymptotic nonvanishing of syzygies of algebraic varieties
- 16:00 – 18:00, 2023-07-25 at CGP Delta
- Jinhyung Park (KAIST)

- Exploring the cohomology of a regular semisimple Hessenberg variety
- 16:00 – 18:00, 2023-07-11 at CGP Delta
- Eunjeong Lee (Chungbuk National University)

- Cylindrical ample divisors on Du Val del Pezzo surfaces
- 16:00 – 18:00, 2023-06-27 at CGP Delta
- Masatomo Sawahara (Yokohama National University, Saitama University)

- Maximally non-factorial Fano varieties
- 16:00 – 18:00, 2023-06-13 at CGP Delta
- Igor Krylov (IBS Center for Geometry and Physics)

- Minimal rational curves on complete symmetric varieties
- 16:00 – 18:00, 2023-05-23 at Math. Bldg. #404
- Shinyoung Kim (IBS Center for Geometry and Physics)

- Rationality problem for conic bundles
- 16:00 – 18:00, 2023-05-12 at Math. Bldg. #404
- Yuri Prokhorov (Steklov Mathematical Institute)

- Birational geometry of del Pezzo surfaces
- 16:00 – 18:00, 2023-05-09 at Math. Bldg. #404
- Constantin Shramov (Steklov Mathematical Institute and HSE)

- Fano manifolds with big tangent bundles
- 16:00 – 18:00, 2023-04-11 at Math. Bldg. #404
- Jeong-Seop Kim (KIAS)

- Flags on Fano 3-fold hypersurfaces
- 16:00 – 18:00, 2023-04-04 at Math. Bldg. #404
- Livia Campo (KIAS)

- Bounds of weighted complete intersections and their Hodge numbers
- 16:00 – 18:00, 2023-03-14 at Math. Bldg. #404
- Victor Przyjalkowski (Steklov Mathematical Institute)

- ACC of plc thresholds
- 16:00 – 18:00, 2023-02-24 at CGP Main Hall
- Sung Rak Choi (Yonsei University)

- Conjugacy classes in gln over DVR
- 14:00 – 16:00, 2022-12-19 at CGP Main Hall
- Sungmun Cho (POSTECH)

- On birationally solid Fano 3-fold hypersurfaces
- 16:00 – 18:00, 2022-10-25 at IBS POSTECH Campus Bldg. #301
- Takuzo Okada (Saga University)

- Counting divisorial contractions with centre a cA_n-singularity
- 16:00 – 18:00, 2022-07-26 at CGP Main Hall
- Erik Paemurru (University of Miami, ICMS-Sofia)

- Families of simple subgroups in the Cremona group arising from del Pezzo fibrations
- 16:00 – 18:00, 2022-07-19 at IBS POSTECH Campus Bldg. #301
- Igor Krylov (Korea Institute for Advanced Study)

- On toric Schubert varieties
- 16:00 – 17:00, 2022-07-05 at IBS POSTECH Campus Bldg. #301
- Eunjeong Lee (Chungbuk National University)

- Gorenstein spherical Fano varieties
- 17:00 – 18:00, 2022-06-14 at Online Streaming
- Giuliano Gagliardi (Leibniz University Hannover)

- Double lines in the quintic del Pezzo fourfold
- 10:00 – 11:00, 2022-05-31 at Online Streaming
- Kiryong Chung (Kyungpook National University)

- Compact Moduli of K3 surfaces with a prescribed nonsymplectic cyclic action
- 10:00 – 11:00, 2022-05-17 at Online Streaming
- Changho Han (University of Georgia)

- A birational Torelli theorem for parabolic symplectic bundles
- 16:00 – 17:00, 2022-04-26 at Online Streaming
- Sumit Roy (IBS Center for Geometry and Physics)

- Fano manifolds with Lefschetz defect 3
- 16:00 – 17:00, 2022-04-19 at Online Streaming
- Cinzia Casagrande (University of Turin)

- Geometry of algebraic surfaces via their Cox rings
- 10:00 – 11:00, 2022-04-05 at Online Streaming
- Kyoung-Seog Lee (University of Miami)

- On K-stability of Fano varieties
- 17:00 – 18:00, 2022-03-22 at Online Streaming
- Hamid Abban (Loughborough University)

- On K-stability of Fano weighted hypersurfaces
- 16:00 – 17:00, 2022-03-08 at Online Streaming
- Taro Sano (Kobe University)

- Automorphisms of algebraic surfaces
- 17:00 – 18:00, 2021-11-30 at Online Streaming
- Constantin Shramov (Steklov Mathematical Institute)

- Greatest Ricci lower bounds of smooth Fano horospherical varieties and equivariant group compactifications
- 16:00 – 17:00, 2021-11-09 at Online Streaming
- Kyeong-Dong Park (Korea Institute for Advanced Study)

- Intermediate Jacobians of Gushel-Mukai varieties
- 16:00 – 17:00, 2021-11-02 at Online Streaming
- Alexander Kuznetsov (Steklov Mathematical Institute)

- Birational geometry of sextic double solids with cA points
- 16:00 – 17:00, 2021-10-12 at Online Streaming
- Takuzo Okada (Saga University)

- Seshadri constants and K-stability of Fano manifolds
- 10:00 – 11:00, 2021-09-28 at Online Streaming
- Ziquan Zhuang (MIT)

- Kahler-Einstein smooth Fano threefolds
- 16:00 – 17:00, 2021-09-14 at Online Streaming
- Ivan Cheltsov (University of Edinburgh)

- Tropical varieties and integral affine manifolds with singularities
- 16:00 – 17:00, 2021-06-22 at Online Streaming
- Yuto Yamamoto (IBS Center for Geometry and Physics)

- Some applications of Jordan algebras in geometry
- 16:00 – 17:00, 2021-06-08 at Online Streaming
- Nicolas Perrin (Versailles University)

- Minimal rational curves on Schubert varieties and their desingularizations
- 16:00 – 17:00, 2021-06-01 at Online Streaming
- Michel Brion (Institut Fourier)

- Noether-Fano Inequalities and Canonical Thresholds on Fano Varieties
- 10:00 – 11:00, 2021-05-11 at Online Streaming
- Charles Stibitz (Northwestern University)

- On (-1) curves in $P^n$ and geometry of Mori Dream Spaces
- 10:00 – 11:00, 2021-05-04 at Online Streaming
- Olivia Dumitrescu (University of North Carolina at Chapel Hill)

- Toric varieties of Catalan type and smooth toric Richardson varieties
- 16:00 – 17:00, 2021-04-27 at Online Streaming
- Eunjeong Lee (IBS Center for Geometry and Physics)

- Rationality of Fano 3-folds over nonclosed fields
- 16:00 – 17:00, 2021-04-13 at Online Streaming
- Yuri Prokhorov (Steklov Mathematical Institute)

- Algebraic groups acting on the plane over a perfect field
- 16:00 – 17:00, 2021-03-30 at Online Streaming
- Susanna Zimmermann (University of Angers)

- Geometric quantization and canonical metrics on polarized manifolds
- 16:00 – 17:00, 2021-03-16 at Online Streaming
- Kewei Zhang (Beijing International Center for Mathematical Research)

- Comparing numerical Iitaka dimensions
- 16:00 – 17:00, 2021-03-09 at Online Streaming
- Jinhyung Park (Sogang University)

- Arithmetic of the moduli of fibrations & Number theory
- 14:00 – 15:00, 2020-08-25 at CGP Main Hall
- Jun Yong Park (IBS Center for Geometry and Physics)

- Arithmetic of the moduli of algebraic curves and Abelian varieties over global fields
- 14:00 – 15:00, 2020-08-18 at IBS POSTECH Campus Bldg. #301
- Jun Yong Park (IBS Center for Geometry and Physics)

- Minimal degree rational curves on moduli space of symplectic and orthogonal bundles on a curve
- 16:00 – 18:00, 2020-08-11 at CGP Main Hall
- Sanghyeon Lee (Korea Institute for Advanced Study)

- Connectivity and the Nef cone of the Hilbert Scheme of Hypersurfaces in the Grassmannian
- 16:00 – 18:00, 2020-07-14 at CGP Main Hall
- See-Hak Seong (IBS Center for Geometry and Physics)

- Cohomological rigidity problems for toric varieties (especially for Bott manifolds)
- 16:00 – 18:00, 2020-05-26 at CGP Main Hall
- Eunjeong Lee (IBS Center for Geometry and Physics)

- Bott manifolds and Grossberg--Karshon twisted cubes
- 16:00 – 18:00, 2020-05-19 at CGP Main Hall
- Eunjeong Lee (IBS Center for Geometry and Physics)

- Weakly 1-completeness of fiber bundles over compact Kahler manifolds II
- 16:00 – 18:00, 2020-01-21 at CGP Main Hall
- Aeryeong Seo (Kyungpook National University)

- Weakly 1-completeness of fiber bundles over compact Kahler manifolds I
- 16:00 – 18:00, 2020-01-20 at CGP Main Hall
- Aeryeong Seo (Kyungpook National University)

- On the way to a proof of the dlt extension of the abundance conjecture
- 16:00 – 18:00, 2019-12-17 at CGP Main Hall
- Tsz On Mario Chan (Pusan National University)

- Compactifications of rational curve spaces in del Pezzo $3$-fold
- 17:00 – 18:00, 2019-12-10 at CGP Main Hall
- Kiryong Chung (Kyungpook National University)

- Tropical geometry and Hodge theory
- 16:00 – 18:00, 2019-10-01 at CGP Main Hall
- Yuto Yamamoto (IBS Center for Geometry and Physics)

- Quotient singularities of algebraic surfaces with small Betti numbers
- 16:00 – 18:00, 2019-08-13 at IBS POSTECH Campus Bldg. #301
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- Cox rings and combinatorics
- 16:00 – 18:00, 2019-07-23 at CGP Main Hall
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- Del Pezzo surfaces: toric systems, degenerations, and minimal model program
- 16:00 – 18:00, 2019-07-16 at CGP Main Hall
- Yonghwa Cho (Korea Institute for Advanced Study)

- Chow cohomology rings of complete flag varieties and Gelfand-Zetlin toric varieties
- 16:00 – 18:00, 2019-07-02 at CGP Main Hall
- Kyeong-Dong Park (IBS Center for Geometry and Physics)

- $3$-folds of general type and canonically of fiber type with high genus
- 16:00 – 18:00, 2019-05-14 at CGP Main Hall
- YongJoo Shin (Korea Institute for Advanced Study)

- Chow and Voevodsky motives of moduli spaces of vector bundles on curves
- 16:00 – 18:00, 2019-04-23 at CGP Main Hall
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- Bundles on prime Fano threefolds of degree 22
- 16:00 – 18:00, 2019-03-26 at CGP Main Hall
- Kyeong-Dong Park (IBS Center for Geometry and Physics)

- Brauer groups and rational points on varieties
- 17:00 – 18:30, 2019-03-19 at CGP Main Hall
- Taekyung Kim (IBS Center for Geometry and Physics)

- Fano deformation rigidity of rational homogeneous spaces
- 16:00 – 18:00, 2019-03-12 at CGP Main Hall
- Qifeng Li (Korea Institute for Advanced Study)

- On the Motivic Sphere Spectrum and Hilbert Schemes
- 16:00 – 18:00, 2019-03-05 at CGP Main Hall
- Elden Elmanto (MSRI)

- Product formula for volumes.
- 16:00 – 18:00, 2019-02-26 at CGP Main Hall
- Sung Rak Choi (Yonsei University)

- Geometry and topology of surfaces isogenous to a product and their relatives
- 16:00 – 18:00, 2019-02-19 at CGP Main Hall
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- delta-invariants of complete intersection log del Pezzo surfaces
- 16:00 – 18:00, 2019-02-12 at CGP Main Hall
- In-kyun Kim (Seoul National University)

- A tutorial on Tom and Jerry
- 16:00 – 18:00, 2018-12-04 at IBS POSTECH Campus Bldg. #301
- Miles Reid (University of Warwick)

- Smooth plane quartic curves and del Pezzo 3-folds of degree 1 with 28 nodes
- 16:00 – 18:00, 2018-10-16 at CGP Main Hall
- Jihun Park (IBS Center for Geometry and Physics & POSTECH)

- Global sections from isolated log canonical singularities
- 16:00 – 18:00, 2018-09-18 at CGP Main Hall
- Joonyeong Won (IBS Center for Geometry and Physics)

- Multiplicity bounds and non-canonical centers
- 16:00 – 18:00, 2018-09-11 at CGP Main Hall
- Joonyeong Won (IBS Center for Geometry and Physics)

- Superrigidity of smooth Fano hypersurfaces of index 1
- 13:00 – 15:00, 2018-09-04 at CGP Main Hall
- Joonyeong Won (IBS Center for Geometry and Physics)

- Introduction to moduli spaces of vector bundles on curves
- 16:00 – 18:00, 2018-08-08 at CGP Main Hall
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- Cubic fourfolds and K3 surfaces: Fano schemes of lines
- 16:00 – 18:00, 2018-07-30 at CGP Main Hall
- Seung-Jo Jung (Korea Institute for Advanced Study)

- Toric varieties in the flag variety
- 13:00 – 15:00, 2018-07-19 at CGP Main Hall
- Eunjeong Lee (IBS Center for Geometry and Physics)

- Motives of moduli spaces of vector bundles on curves
- 16:00 – 18:00, 2018-07-03 at CGP Main Hall
- Kyoung-Seog Lee (IBS Center for Geometry and Physics)

- Hodge structures and period domains for cubic fourfolds
- 16:00 – 18:00, 2018-06-26 at CGP Main Hall
- Kyeong-Dong Park (IBS Center for Geometry and Physics)

- Rationality problem of cubic fourfolds
- 16:00 – 18:00, 2018-06-12 at CGP Main Hall
- Kyeong-Dong Park (IBS Center for Geometry and Physics)

#### Subevents

- Algebraic Geometry Seminar 2016
- January 1 – December 31, 2016

- Algebraic Geometry Seminar 2015
- January 1 – December 31, 2015

- Algebraic Geometry Seminar 2014
- January 1 – December 31, 2014

- Algebraic Geometry Seminar 2013
- September 13 – December 31, 2013