I added two technical articles to my personal web site this evening.
Step size for numerical differential equations is a one-page set of notes on how to select the optimal step size when numerically solving ODEs (ordinary differential equations).
Separation of convex sets in linear topological spaces is a highly technical article I wrote a long time ago. I decided to put it on the web in case someone finds it useful. It’s a fairly obscure topic, but this paper covers it thoroughly.
Update: Posted an old PDE paper, Distributed Systems of PDE in Hilbert Space.