
Welcome! Basic info about me and this blog can be found in the "about me and this blog" page.
Categories
Sites

Recent Posts
Archives
Meta
Monthly Archives: January 2012
BI(+EO): quasiisometric rigidity
There are a few types of quasiisometric rigidity results. I will talk about results of the following kinds: 1) selfquasiisometries of suchandsuch space or group (coarsely) preserve some structure, usually a collection of (left cosets) of subgroups 2) if a … Continue reading
BI: Asymptotic cones
This post contains an experimental exposition of asymptotic cones, I hope this will be vaguely understandable (feedback is warmly welcome!). Many (most?) researchers actually think of asymptotic cones in a way similar to the one I’ll present, rather than as … Continue reading
Posted in asymptotic cones
Leave a comment
EO: “hierarchy paths” for graph manifold groups
I’d like to tell you about a certain family of bilipschitz paths in universal covers of graph manifolds with nice “combinatorial” properties that I used here and later here, and that hopefully will turn out to be useful in other … Continue reading
Posted in special paths in graph manifolds
1 Comment
BI: Thickness
Thick metric spaces were defined in this paper by Jason Behrstock, Cornelia Druţu and Lee Mosher as an obstruction for a group (actually, a metric space) to be (properly) relatively hyerbolic. Indeed, the notion of thickness provides a very interesting way of … Continue reading