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

Choi, Cordova, Hsin, Lam, Shao, https://arxiv.org/abs/2111.01139

Tantivasadakarn, Thorngren, Vishwanath, Verresen, https://arxiv.org/abs/2112.01519

Delaney, Kim, Plavnik. https://arxiv.org/abs/2107.11374

Lee, Ohmori, Tachikawa. https://arxiv.org/abs/2108.05369