Continuous symmetry groups with smooth manifold structure — SU(2) for spin, SU(3) for colour, SO(3,1) for spacetime Lorentz transformations, U(1) for electromagnetic gauge. By Noether's theorem each gives a conservation law.
Continuous symmetry groups with smooth manifold structure — SU(2) for spin, SU(3) for colour, SO(3,1) for spacetime Lorentz transformations, U(1) for electromagnetic gauge. By Noether's theorem each gives a conservation law.