Ngoc Cuong Nguyen (KAIST)
Ngoc Cuong Nguyen Visitor (2025.3.1-2026.2.15) from KAIST Office: B248
12 events found.
Mihai Paun (Universität Bayreuth)
Mihai Paun Visitor (2025.3.26-2025.5.2) from Universität Bayreuth Office: B249
Ilya Kossovskiy, TBA
B236-1 IBS, Korea, Republic ofSpeaker Ilya Kossovskiy SUSTech TBA
Meng Chen, The Noether inequality for algebraic threefolds
B236-1 IBS, Korea, Republic ofSpeaker Meng Chen Fudan University In this talk, I will present a complete proof for the following theorem: the inequality K3 ≥ 4/3 pg-10/3 holds for all 3-folds of general type.
Meng Chen, On the classification of some 3-folds with small positive canonical volumes
B236-1 IBS, Korea, Republic ofSpeaker Meng Chen Fudan University In this lecture, I will report some new progress in studying moduli spaces of algebraic 3-folds with very small canonical volume.
Gian Pietro Pirola, Asymptotic directions on the moduli space of curves
B236-1 IBS, Korea, Republic ofSpeaker Gian Pietro Pirola University of Pavia We present some computational improvements that allow us to study asymptotic lines in the tangent of the moduli space Mg of the curves of genus g. The asymptotic directions are those tangent directions that are annihilated by the second fundamental form induced by the Torelli map. …
Benjamin McMillan, Secondary Characteristic classes and Chern-Weil theory of (Haefliger) singular foliations I
B236-1 IBS, Korea, Republic ofSpeaker Benjamin McMillan IBS CCG Foliations have a theory of characteristic classes that is much like that of vector bundles, but with notable differences. Some of the characteristic classes of a foliation come from its induced normal bundle, but there are additional secondary classes that depend on more detailed information about the foliation. …
Benjamin McMillan, Secondary Characteristic classes and Chern-Weil theory of (Haefliger) singular foliations II
B236-1 IBS, Korea, Republic ofSpeaker Benjamin McMillan IBS CCG Foliations have a theory of characteristic classes that is much like that of vector bundles, but with notable differences. Some of the characteristic classes of a foliation come from its induced normal bundle, but there are additional secondary classes that depend on more detailed information about the foliation. …
Sanghyeon Lee, Vafa-Witten invariants on elliptic surfaces and moduli space of quasisections
B236-1 IBS, Korea, Republic ofSpeaker Sanghyeon Lee Ajou University For a threefold X = C x S, D. Nesterov developed a theory of quasimaps from C to the moduli space of sheaves over S. He compared the moduli space of quasimaps and the moduli space of sheaves over the threefold X and also compared their obstruction theories. …
Benjamin McMillan, Secondary Characteristic classes and Chern-Weil theory of (Haefliger) singular foliations III
B236-1 IBS, Korea, Republic ofSpeaker Benjamin McMillan IBS CCG Foliations have a theory of characteristic classes that is much like that of vector bundles, but with notable differences. Some of the characteristic classes of a foliation come from its induced normal bundle, but there are additional secondary classes that depend on more detailed information about the foliation. …
Gian Pietro Pirola, Sections of the Jacobian bundles of plane curves and applications
B236-1 IBS, Korea, Republic ofSpeaker Gian Pietro Pirola University of Pavia We study normal functions (sections of the Jacobian bundle) defined on the moduli space of pointed plane curves. Using the infinitesimal Griffiths invariant (refined by M. Green and C. Voisin) we show that a normal function with nontrivial but sufficiently "small" support cannot be "locally constant". …
Han-Bom Moon, Ulrich bundles on intersections of quadrics
B236-1 IBS, Korea, Republic ofSpeaker Han-Bom Moon Fordham University An Ulrich bundle is a vector bundle with very strong cohomology vanishing conditions. Eisenbud and Schreyer conjectured that every smooth projective variety possesses an Ulrich bundle. Despite many results on low dimensional varieties and special varieties, the general existence is unknown. In this talk, I will describe recent …