We give a gauge theoretical construction of 3d (untwisted) Dijkgraaf-Witten TQFT with defects à la Freed-Quinn.This gives a symmetric monoidal functor from a category of stratified surfaces and stratified 3d cobordisms into the category of finite-dimensional vector spaces. It does not require choices of triangulations, allows an easy computation of examples and can be applied to defects in Kitaev's quantum double model.This is joint work with João Faria Martins, arXiv: 2410.18049
