Thanks for the detailed answer. I'm not familiar with the depth of these topics, but i can see the appeal! I used to find that very stimulating! Best, E.
Oh so they say, my son is a big airplane fan Just out of curiosity, aren't magnetic fields a problem with a mechanical watch in the cockpit with all these instruments?
PS: And yes, those capital \Pi and \Sigma in my terrible handwriting are products and sums! (These were some notes to myself on the parity of certain partition functions, in case you are familiar ;-) Cheers.