Special Unitary Groups and Quaternions Mostly for Ed from the context of last week's Physical Friam if you're coming today.
Discussion was around potential ways of visualizing the dynamics of SU(3), SU(2), (SU1) that highlights Special Unitary Groups. (wiki link from Frank <https://en.wikipedia.org/wiki/Special_unitary_group>), and can we foreground how quaternions are used in this process. and a related bit on forces, I'm searching for ways to visualize/understand how FFTs with Poisson equation <https://www.codeproject.com/Articles/5308623/Solving-Poisson-Equation> are used to compute the forces from scalar fields (eg gravitational force from mass density, electric force from charge, etc) and if there's any relation to Special Unitary Groups. -S
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