Equivariant Principal Bundles over the 2-Sphere

Autor:	Yalcinkaya, Eyup
Rok vydání:	2019
Předmět:	Mathematics - Geometric Topology
Druh dokumentu:	Working Paper
Popis:	In this paper, we introduce the classification of equivariant principal bundles over the 2-sphere. Isotropy representations provide tools for understanding the classification of equivariant principal bundles. We consider a $\Gamma$-equivariant principal $G$-bundle over $S^2$ with structural group $G$ a compact connected Lie group, and $\Gamma \subset SO(3)$ a finite group acting linearly on $S^2.$ We prove that the equivariant 1-skeleton $X \subset S^2$ over the singular set can be classified by means of representations of their isotropy representations. Then, we show that equivariant principal G-bundles over the $S^2 $ can be classified by a $\Gamma$-fixed set of homotopy classes of maps, and the underlying $G$-bundle $\xi$ over $S^2$ can be determined by first Chern class. Comment: 16 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1902.06293 Zobrazit plný text záznamu View this record from Arxiv