Unitary bundle gauge group
= Unitary bundle gauge group
{title2=$\mathcal G$}
The group of <unitary bundle gauge transformations> under composition. It acts on connections and their solution spaces. The stabilizer of a connection is the centralizer of its <holonomy> acting by parallel automorphisms, so a quotient can have singularities when this stabilizer increases.
// Destination: geometry-and-topology.bigb