Perez-Lona, AlonsoSharpe, Eric2023-08-282023-08-282023-08-21Journal of High Energy Physics. 2023 Aug 21;2023(8):138http://hdl.handle.net/10919/116139In this paper we generalize previous work on decomposition in three-dimensional orbifolds by 2-groups realized as analogues of central extensions, to orbifolds by more general 2-groups. We describe the computation of such orbifolds in physics, state a version of the decomposition conjecture, and then compute in numerous examples, checking that decomposition works as advertised.application/pdfenCreative Commons Attribution 4.0 InternationalArticle - Refereed2023-08-27The Author(s)https://doi.org/10.1007/JHEP08(2023)138