The global symmetries relate distinct physical configurations and so they need to agree in any dual description.

The global symmetries agree, as do the charges of the mesons and baryons.

Some surprising global symmetries have been found in this theory.

There are additional global symmetries whose definitions require the notion of chirality, discrimination between left and right-handed.

In quantum chromodynamics, flavour is a global symmetry.

This is always a global internal symmetry of any quantum field theory with fermions and corresponds to a rotation by 2π.

Some global symmetries under changes of coordinate predate both general relativity and the concept of a gauge.

This requires quite a bit of adjusting for an approximate global symmetry, which needs explaining.

In fact, a global symmetry is just a local symmetry whose group's parameters are fixed in space-time.

This model has an U(N) global internal symmetry.