Welcome and Opening Remarks

          @misc{ scivideos_PIRSA:22060006,
            doi = {10.48660/22060006},
            url = {https://pirsa.org/22060006},
            author = {Johnson-Freyd, Theo},
            keywords = {Mathematical physics},
            language = {en},
            title = {Welcome and Opening Remarks},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2022},
            month = {jun},
            note = {PIRSA:22060006 see, \url{https://scivideos.org/pirsa/22060006}}
          }