[whimsy]

Thanks for making him cupcakes =) He's on my list of top five favorite teachers ever, and he teaches on the other side of the country from me.

Incidentally, what makes that his favorite matrix?

[tiki12revolt]

No idea actually, but it was something he mentioned the first day of class. He introduced it as "K, the second difference matrix, and my favorite". That was good enough for us.