Скачать или смотреть "Moduli of flags of sheaves: a quiver description" by Valeriano Lanza (UFF)

"Moduli of flags of sheaves: a quiver description"

Talk by Valeriano Lanza (UFF) on May 26, 2021

In [1], the moduli spaces of framed flags of sheaves on the projective plane were described by means of representations of the so-called enhanced ADHM quiver. We first review those results, with a recent refinement concerning the chamber structure in the space of stability parameters. We shall then discuss the obstruction theory for these moduli spaces, showing in general that they have a perfect obstruction theory, and providing for specific choices of invariants a class of unobstructed points. Finally, open problems and possible further developments will be presented. This is a joint
work with Rodrigo von Flach and Marcos Jardim.

[1] R. A. von Flach and M. Jardim, Moduli spaces of framed flags of sheaves on the projective plane. Journal of Geometry and Physics 118 (2017), 138–168.