The Standard Model is the best tested and most widely accepted theory of elementary
particles we have today. It may seem complicated and arbitrary, but it has hidden patterns
that are revealed by the relationship between three “grand unified theories”: theories that
unify forces and particles by extending the Standard Model symmetry group $\mathrm
{U}(1)\times\mathrm {SU}(2)\times\mathrm {SU}(3) $ to a larger group. These three are
Georgi and Glashow's $\mathrm {SU}(5) $ theory, Georgi's theory based on the group …

… This talk is an introduction to the representation theory used in ► The Standard Model of
Particle Physics (SM); ► Certain extensions of the SM, called Grand Unified Theories (GUTs). …
There’sa loose correspondence between particle physics and representation theory: …
There’sa loose correspondence between particle physics and representation theory: …