I'm a near-60 physician w/ some research interests at the periphery of my career (mostly a clinician). Since I enjoy looking at things through a mathematical lens, I occasionally stumble onto research possibilities that pique my interest. I've one such now, but it will take a little more currency in my DiffyQ knowledge than I have. So I'm working through an ODE text (Boyce/Prima, 10th Ed), after just completing a work-through of the most recent Thomas'. I'm looking forward to being able to beg for help, and maybe someday even contribute help!