After a brief introduction of how BMS symmetry and its generalizations appear as subgroups of the diffeomorphism group, selected aspects of the associated representation theory are reviewed.
Andrea Campoleoni (U of Mons)
Pedro del Real Lavergne (U of Vienna)
Laura Donnay (SISSA, Trieste)
Adrien Fiorucci (TU Vienna)
Stefan Fredenhagen (U of Vienna)
Daniel Grumiller (TU Vienna)
Stefan Prohazka (U of Vienna)