• Sungmin Yoo, Fiberwise Kähler-Ricci Flows on Families of Strongly Pseudoconvex Domains

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         Speaker Sungmin Yoo IBS, Center for Complex Geometry A study on the positive variation of Kähler-Einstein metrics is first developed by Schumacher. More precisely, he has proved that the fiberwise Kähler-Einstein metrics on a family of canonically polarized compact Kähler manifolds is positive-definite on the total space. Later, Berman constructed the fiberwise Kähler-Ricci

  • Jihun Yum, Characterization of Diederich-Fornaess and Steinness Indices in Cn

    B266 IBS, Korea, Republic of
    Several Complex Variables Seminar

         Speaker Jihun Yum IBS, Center for Complex Geometry Let Ω be a bounded pseudoconvex domain in Cn with smooth boundary ∂Ω. The Diederich-Fornaess index and the Steinness index of Ω are defined by DF(Ω) := supρ { 0 < η < 1 : -(-ρ)η is strictly plurisubharmonic on Ω ∩ U for some

  • Sungmin Yoo, Bergman Metrics and Kähler-Einstein Metrics on Projective Manifolds

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         Speaker Sungmin Yoo IBS, Center for Complex Geometry After Yau suggested the problem of approximations of Kähler-Einstein metrics by Bergman type metrics, various types of Bergman metrics have been developed and studied by Tian, Donaldson, Tsuji, etc. They showed that if a polarized manifold admits a Kähler-Einstein metric, there exist a sequence of

  • 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

  • Jihun Yum, Characterization of Diederich-Fornaess and Steinness Indices in Complex Manifolds

    B266 IBS, Korea, Republic of
    Several Complex Variables Seminar

         Speaker Jihun Yum IBS, Center for Complex Geometry Let Ω be a relatively compact pseudoconvex domain in a complex manifold X with smooth boundary ∂Ω. The Diederich-Fornaess index and the Steinness index of Ω are defined by DF(Ω) := supρ { 0 < η < 1 : -(-ρ)η is strictly plurisubharmonic on Ω

  • Seungjae Lee, Symmetric Differentials on Complex Hyperbolic Forms

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         Speaker Seungjae Lee IBS, Center for Complex Geometry Let Γ be a cocompact torsion-free lattice in the automorphism group of complex unit ball Bn, Aut(Bn). In this talk, we discuss the existence of symmetric differentials on the compact ball quotient Σ = Bn / Γ. Since Σ has a Kähler metric induced by

  • Seungjae Lee, L2 Extension of Holomorphic Jets on Complex Hyperbolic Forms

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         Speaker Seungjae Lee IBS, Center for Complex Geometry As the continuation of the previous talk, I discuss an L2 extension problem of holomorphic jets on compact complex hyperbolic forms. Let Γ be a cocompact torsion-free lattice in the automorphism group Aut(Bn) and Ω be a quotient Bn × Bn given by diagonal action

  • Taeyong Ahn, Positive Closed Currents and Super-potentials

    B266 IBS, Korea, Republic of
    Several Complex Variables Seminar

         Speaker Taeyong Ahn Inha University, Department of Mathematics Education In this talk, we briefly review the notion and properties of positive closed currents and super-potentials. As an application, we discuss the equidistribution of positive closed currents on the projective space. We also discuss the difficulty of the extension of the result to a

  • Hosung Kim, The Space of Rational Curves on a General Hypersurface of Projective Space

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         Speaker Hosung Kim IBS, Center for Complex Geometry In 1979, the work of Mori had brought out the importance of the study of rational curves in higher-dimensional geometry. In 1990s, applying Mori's bend-and-break method, Campana and Kollar-Miyaoka-Mori proved that any Fano manifold is rationally connected. Since then the family of raional curves on

  • Young-jun Choi, Existence of a Complete Holomorphic Vector Field via the Kähler-Einstein Metric

    B266 IBS, Korea, Republic of
    Several Complex Variables Seminar

         Speaker Young-jun Choi Pusan National University A fundamental problem in Several Complex Variables is to classify bounded pseudoconvex domains in the complex Euclidean space with a noncompact automorphism group, especially with a compact quotient. In the results of Wong-Rosay and Frankel, they make use of the "Scaling method" for obtaining an 1-parameter family

  • Jeong-Seop Kim, Stability of Symmetric Powers of Vector Bundles on a Curve

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         Speaker Jeong-Seop Kim KAIST For a stable vector bundle E on a smooth projective curve, it is known that the symmetric powers Sk E are semi-stable and are stable for all k > 0 in sufficiently general. Moreover, if E has rank 2, then Sk E is destabilized by a line subbundle if

  • Lucas Kaufmann, Introduction to Dynamics in Several Complex Variables

    B266 IBS, Korea, Republic of
    Complex Geometry Seminar

         Speaker Lucas Kaufmann IBS, Center for Complex Geometry The field of complex dynamics deals with the study of the iteration of a map from a complex manifold to itself. The one dimensional theory is more than one-hundred years old and is now very well developed. Due to the fundamental differences between complex analysis