Monthly Archives: October 2013

A paper about locally compact asymptotic cones

Here is a new paper of mine. The story is this. A couple of years ago I was reading the paper  (the first version). I was surprised finding there a statement answering a 30-years old question of van den Dries and Wilkie (if one asymptotic cone of a group is locally compact, should the group be […]

Combinatorial algebra:syntax and semantics

I added a section about amenability (5.8), corrected many misprints. Here is the latest version of the book.


Most probably I won’t be active on any longer: too many homework level  questions and the community attitude towards these questions has become too liberal.  I think I did help a few people with my answers, and I got some useful information from the answers to my questions.