Seminar series
Date
Mon, 30 Jan 2012
Time
15:45 -
16:45
Location
L3
Speaker
Chris Cashen
I will discuss quasi-isometries of the free group that preserve an
equivariant pattern of lines.
There is a type of boundary at infinity whose topology determines how
flexible such a line pattern is.
For sufficiently complicated patterns I use this boundary to define a new
metric on the free group with the property that the only pattern preserving
quasi-isometries are actually isometries.