QSC definition in N=4

          @misc{ scivideos_PIRSA:23100084,
            doi = {},
            url = {https://pirsa.org/23100084},
            author = {Ryan, Paul},
            keywords = {Mathematical physics, Quantum Fields and Strings},
            language = {en},
            title = {QSC definition in N=4},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2023},
            month = {oct},
            note = {PIRSA:23100084 see, \url{https://scivideos.org/pirsa/23100084}}
          }