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

Choi, Córdova, Hsin, Lam, Shao, https://arxiv.org/abs/2204.09025

Bah, Bonetti, Leung, Weck, https://arxiv.org/abs/2112.07796

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

Córdova, Ohmori, Rudelius, https://arxiv.org/abs/2202.05866