Sorry for my silence around here. I've been distracted by a few things. First, now that school is in full swing, I actually have to work again. I've forgotten what it was like. That has kept me busy.
Secondly, I've been computerless for a couple days. My hard drive went screwy and directories and the matrix were all messed up. I'm back up to speed now, but still shaking from computer withdrawal.
I taught my students about the Mitsunobu reaction today. That's a great reaction.