A few minutes ago I learned that Jonathan Groves died on

4 June 2011 at the age of 29.

I learned this from this Editor's Note at the end of

Jonathan Groves, "An elementary counterexample in the

compact-open topology", American Mathematical Monthly

119 #8 (October 2012), 693-694.

Thank you for letting us know.

Yes, he has been an active and intelligent participant in many threads here.

Here's a post I consider representative of his many thoughtful contributions:

http://mathforum.org/kb/thread.jspa?messageID=7438820

Kirby