14:00 - 14:40 정승조
Tite: Tjurina spectrumof a hypersurface singularity
Abstract: The Steenbrink spectrum is a well-known invariant for a hypersurface isolated singularity. This talk introduces the Tjurina spectrum and compares it with the Steenbrink spectrum. More precisely, this talk shows that their difference has a canonical graded symmetry.
15:00 - 15:40 임우남
Title: Moduli space of quiver representations and Virasoro constraints
Abstract: Quiver is a directed graph and its representation is simply a collection of a vector space for each vertex and a linear map for each arrow. Quiver representations and their moduli spaces play a significant role in geometric representation theory and enumerative geometry. I will give an introduction to the moduli space of quiver representations and the Virasoro constraints in this context.