Qifeng Li

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  • Qifeng Li, Rigidity of Wonderful Group Compactifications under Fano Deformations

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         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 …

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

    B236-1 IBS, Korea, Republic of
    Complex Geometry Seminar

        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 …

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  • Workshop on Geometry of Homogeneous Varieties

    B109 IBS, Korea, Republic of
    Conferences and Workshops

    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 …

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  • Qifeng Li, Minimal rational curves on equivariant compactifications of symmetric spaces

    B236-1 IBS, Korea, Republic of
    Complex Geometry Seminar

        Speaker Qifeng Li Shandong University Let X be a smooth equivariant compactification of a symmetric space. In this talk, we will discuss when a minimal rational curve on X is the orbit closure of a 1-parameter group. In case the symmetric space is of group type, the answer is positive and moreover the …

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