# nLab principal 3-bundle

Contents

### Context

#### Bundles

bundles

fiber bundles in physics

cohomology

# Contents

## Idea

A principal 3-bundle is a $G$-principal ∞-bundle over a 3-group $G$.

For $G = \mathbf{B}^2 U(1)$ the circle Lie 3-group, the total space of a $\mathbf{B}^2 U(1)$-principal 3-bundle is modeled by a bundle 2-gerbe.

## Connections

Last revised on June 29, 2012 at 14:03:40. See the history of this page for a list of all contributions to it.