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Algebraic Geometry Seminar

Tim Ryan
University of Michigan
Minimal free resolutions and birational geometry of moduli spaces of sheaves
Abstract: Recent work on the birational geometry of moduli spaces has largely worked along two lines; either it has used the machinery of Bridgeland stability conditions or it has solved the interpolation problems for vector bundles. In this talk, I will discuss recent work with Manuel Leal and Cesar Lozano Huerta in which we connect these approaches to the minimal free resolutions of sheaves. In particular, I will show that the base locus of (primary) extremal chamber of the effective cone of a moduli space of sheaves on the projective plane can be characterized in terms of the map in the Gaeta minimal free resolution. Time permitting, I will discuss a conjecture for the exact relationship between the minimal free resolution, Bridgeland destabilizing objects, and the stable base locus decomposition.
Monday September 20, 2021 at 3:00 PM in Zoom
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