Re: [FRIAM] links for this morning's FRIAM: Special Unitary Groups and Quaternions

Most of my dissertation (1968) was on numerical solution of potential problems. One of the parts was a proof that some of the known iterative methods converged. The argument loosely went something like this. Consider the 2D Poisson equation on a square. If you use an N x N approximation with the

Re: [FRIAM] links for this morning's FRIAM: Special Unitary Groups and Quaternions

a quaternion version of Euler's formula https://www.youtube.com/watch?v=dvpAFWBVgy0 A bit late for the discussion, and kind of sketchy when you get into it. -Roger > On Apr 28, 2023, at 8:18 AM, Stephen Guerin > wrote: > > Special Unitary Groups and Quaternions > > Mostly for Ed from the c

[FRIAM] links for this morning's FRIAM: Special Unitary Groups and Quaternions

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