Academics

Moduli Spaces and Related Topics | Curves on K3 surfaces and Mukai’s program

Time:Wed., 14:00-15:00, Mar. 20. 2024

Venue:C654, Shuangqing Complex Building A 清华大学双清综合楼A座 C654

Organizer:Xiang He, Chenglong Yu, Dingxin Zhang, Jie Zhou

Speaker:Haoyu Wu (Fudan University)

Abstract:

The Mukai’s program seeks to recover a K3 surface X from any curve C on it by exhibiting it as a Fourier-Mukai partner to a Brill--Noether locus of vector bundles on the curve. In this talk, I will give an introduction to work of Feyzbakhsh for Picard number one K3 and primitive curve C. We extend the results to the case of non-primitive curves by introducing the tools of destabilizing regions. As an application, we show that there are hyper-K\"{a}hler varieties as Brill-Noether loci of curves in every dimension. This is a joint work with Yiran Chen and Zhiyuan Li.

DATEMarch 20, 2024
SHARE
Related News
    • 0

      Moduli Spaces and Related Topics | On the moduli space of certain plane sextic curves

      Abstract:We study moduli spaces of certain sextic curves with a singularity of multiplicity 3 from both perspectives of Deligne–Mostow theory and periods of K3 surfaces. In both ways we can describe the moduli spaces via arithmetic quotients of complex hyperbolic balls. We show that the two ball-quotient constructions can be unified in a geometric way. This is a joint work with Zhiwei Zheng

    • 1

      Seminar on Moduli Spaces and Related Topics | Sheaves on non-reduced curves in a projective surface

      Abstract Sheaves on non-reduced curves can appear in moduli spaces of 1-dimensional semistable sheaves over a surface, and moduli spaces of Higgs bundles as well. We estimate the dimension of the stack M_X(nC, \chi) of pure sheaves supported at the non-reduced curve nC (n ≥ 2) with C an integral curve on X. We prove that the Hilbert-Chow morphism h_{L,\chi} : M_X^H(L, \chi) -> |L| sending each...