Really awesome, definitely bookmarking. Couple points:

- Shouldn't you link to the arxiv page instead of the PDFs in case there's a revision?

- What about a column for "area" as well? Would be nice to scroll through and see what areas have made progress relative to others lately.

- Some sort of very brief mini-about/summary at the top of the main page wouldn't hurt. A tagline of some sort.

- Now I notice there's an About under the hamburger menu -- why not just display HOME and ABOUT instead of hiding them in a menu? You don't have enough menu options to need to hide them in a hamburger menu.