Have a look over it. Comments/suggestions/corrections all welcome.
Hopefully lots of people will get benefit from this (if they know about it, that is!).
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
A very useful tool for learning.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.