K-theoretic version of Fourier-Mukai transforms between crepant resolutions of finite quotient singularities

• Ano de defesa: 2023
• Autor(a) principal: Giraldo, Ivan Junnior Serna
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraíba; Brasil; Matemática; Programa Associado de Pós-Graduação em Matemática; UFPB
• Palavras-chave em Português: Matemática; Categorias derivadas; Funtores derivados; Transformadas de Fourier-Mukai; Resoluçoes crepantes; Correspondência de McKay; Invariantes geométricos - Teoria; Espaços de moduli; Teoria K.; Geometría tórica; Derived categories; Derived functors; Fourier-Mukai transforms; Crepant resolutions; McKay correspondence; Geometric invariant theory; Moduli spaces; K-theory; Toric geometry; CNPQ::CIENCIAS EXATAS E DA TERRA::MATEMATICA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/123456789/29951

We study crepant resolutions of singularities C3/G, where G is a finite abelian subgroup of SL(3,C). Using derived category methods, Bridgeland, King and Reid proved that the Hilbert scheme of G-clusters (G-Hilb)(C3) is a crepant resolution. Following Craw-Ishii, we study the moduli spaces Mθ of θ-stable G-constellations, in particular, (G-Hilb)(C3) is a moduli space of this type for a suitable parameters in the GIT-parameter space, while all crepant resolutions are of the form Mθ for some θ. The GIT-parameter space is divided into chambers, and for parameters in adjacent chambers, theMθ spaces are Fourier-Mukai partners. Following Craw-Ishii we study how the Fourier-Mukai transform between partners can induce a change in the tautological line bundles. As an application, we study the case of C3/Z4. We outline the toric description of the singularity and its crepant resolution. Using Chern classes we determine the cohomological Fourier-Mukai transform between Fourier- Mukai partners, that are moduli spaces for adjacent chambers. In general, for the singularities C3/G, we also determine the cohomological Fourier- Mukai transform as a linear transformation between the cohomology rings.