Tag: Qifeng Li

Workshop on Geometry of Homogeneous Varieties

Speakers

Michel Brion (U. Grenoble)
Jarek Buczynski (IMPAN, Warsaw)
Thibaut Delcroix (U. Montpellier)
Minseong Kwon (KAIST/IBS-CCG)
Qifeng Li (Shandong U.)
Yoshinori Namikawa (RIMS, Kyoto)
Kyeong-Dong Park (Gyeongsang National U.)
Boris Pasquier (U. Poitiers)
Léa Villeneuve (U. Poitiers)

Abstracts

PDF file

Schedule

April 15 (Monday)

10:00-11:00 Brion
11:20-12:20 Brion
12:30-13:20 Lunch
15:00-16:00 Kwon
16:20-17:40 Li

April 16 (Tuesday)

10:00-11:00 Pasquier
11:20-12:20 Pasquier
12:30-13:20 Lunch
15:00-16:00 Park
16:20-17:40 Villeneuve

April 17 (Wednesday)

10:00-11:00 Namikawa
11:20-12:20 Namikawa
12:30-13:20 Lunch
Free Afternoon

April 18 (Thursday)

10:00-11:00 Delcroix
11:20-12:20 Delcroix
12:30-13:20 Lunch
15:00-16:00 Buczynski
16:20-17:20 Buczynski

Organizers

Jaehyun Hong (IBS-CCG)
Jun-Muk Hwang (IBS-CCG)

Main Hotel

Lotte City Hotel Daejeon (4-30 Doryong-dong, Yuseong-gu, Daejeon)

Venue

B109, IBS, Daejeon, Korea

Registration

Please submit Google form by March 31.

More Information

• How to get to IBS-CCG

Qifeng Li, Rigidity of Projective Symmetric Manifolds of Picard Number 1 Associated to Composition Algebras

    Speaker

Qifeng Li
Shandong University

To each complex composition algebra A, there associates a projective symmetric manifold X(A) of Picard number 1. The vareity X(A) is closed related with Freudenthal’s Magic Square, which is a square starting from the adjiont varieties of F4, E6, E7 and E8. In a recent joint work with Yifei Chen and Baohua Fu, we obtain the deformation rigidity of X(A). In this talk, we will introduce the construction of X(A) from Freudenthal’s Magic Square, the geometric properties of them, and finally the deformation rigidity of X(A).

Qifeng Li, Rigidity of Wonderful Group Compactifications under Fano Deformations

     Speaker

Qifeng Li
IBS, Center for Complex Geometry
For a complex connected semisimple linear algebraic group G of adjoint type and of rank n, De Concini and Procesi constructed its wonderful compactification X, which is a smooth Fano variety of Picard number n enjoying many interesting properties. In this talk, we will show that the wonderful compactification X is rigid under Fano deformations. Namely, for any family of smooth Fano varieties over a connected base, if one fiber is isomorphic to X, then so are all other fibers. This answers a question raised by Bien and Brion in their work on the local rigidity of wonderful varieties.
IBS 복소기하학연구단 Center for Complex Geometry
기초과학연구원 복소기하학연구단
대전 유성구 엑스포로 55 (우) 34126
IBS Center for Complex Geometry
Institute for Basic Science (IBS)
55 Expo-ro Yuseong-gu Daejeon 34126 South Korea
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