mccoy

You may not have much luck... Grothendieck was notoriously private. IIRC, he officially withdrew every peer-reviewed mathematical manuscript during the late 80s. There are mimeographed copies floating through the halls of math departments in France, but I've never actually seen much of his work.

Oh man, I actually cited some of his work in one of my papers. There was a particular result buried in one of his papers from 1968 that was not well-understood by mathematicians for almost 20 years until it was resurrected in less-abstract language in 1986.

The particular result isn't his most famous, but it does underly a lot of modern research into approximate solutions of NP-hard problems. (See here: https://web.math.princeton.edu/~naor/homepage%20files/cutnor...)

Sad to hear of such a brilliant person passing (even if he does reinforce a rather negative stereotype of mathematicians).