On the 6d Origin of Non-invertible Symmetries in 4d

Apruzzi, Bonetti, García Etxebarria, Hosseini, Schäfer-Nameki, https://arxiv.org/abs/2112.02092

Del Zotto, García Etxebarria, Schäfer-Nameki, https://arxiv.org/abs/2203.10097

Ohmori, Tizzano, https://arxiv.org/abs/2112.13445

Kaidi, Ohmori, Zheng, https://arxiv.org/abs/2111.01141