Very interesting--thanks for the reply. I sometimes forget there are problems out there that for all our analytic tools are 'too hard' to give an good (read: s

Very interesting--thanks for the reply. I sometimes forget there are problems out there that for all our analytic tools are 'too hard' to give an good (read: short) answer. I'll have to go properly digging for some papers, though it's been a few years since I had to read differential equations...