Web page on open problems

Hello,

I've got many requests for theses topics (both MSc and PhD), so I 
started putting together a web page trying to list all open problems 
and topics we're working on, requests of collaborations, etc.

The page is at <http://alessio.guglielmi.name/res/cos/crt.html>. As 
you see, it's still a draft. I'd appreciate getting suggestions and 
descriptions of open problems of which you're knowledgeable. I plan 
to finish with this page in the next very few days, please help me!

I think it's important to have something like this, many students, 
especially at ESSLLI, asked me for this already.

Ciao,

-Alessio