On the moduli spaces of singular principal bundles on stable curves

[EN] We prove the existence of a linearization for singular principal �-bundles not depending on the base curve. This allow us to construct the relative compact moduli space of �-(semi)stable singular principal �-bundles over families of reduced projective and connected nodal curves, and to reduce t...

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Bibliographic Details
Author: Muñoz Castañeda, Ángel Luis
Format: article
Status:Versión aceptada para publicación
Publication Date:2020
Country:España
Institution:Universidad de León
Repository:BULERIA. Repositorio Institucional de la Universidad de León
OAI Identifier:oai:buleria.unileon.es:10612/26604
Online Access:https://hdl.handle.net/10612/26604
Access Level:Open access
Keyword:Matemáticas
Principal bundles
Stable curves
Universal moduli
12 Matemáticas
Description
Summary:[EN] We prove the existence of a linearization for singular principal �-bundles not depending on the base curve. This allow us to construct the relative compact moduli space of �-(semi)stable singular principal �-bundles over families of reduced projective and connected nodal curves, and to reduce the construction of the universal moduli space over ℳ� to the construction of the universal moduli space of swamps.