Erratum to “From loop groups to 2-groups”

Abstract

There were a number of sign errors in our paper “From loop groups to 2-groups” $\href{https://dx.doi.org/10.4310/HHA.2007.v9.n2.a4 }{[\textit{Homology Homotopy Appl.}\;\textbf{9}\;\textrm{(2007), 101–135}]}$. Here we explain how to correct those errors.