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math.GR2012
Homogeneous number of free generators
Menny Aka, Tsachik Gelander, Gregory A. Soifer
We address two questions of Simon Thomas. First, we show that for any n>2 one can find a four generated free subgroup of SLn(Z) which is profinitely dense. More generally, we show…
math.GR2012
Limits of finite homogeneous metric spaces
Tsachik Gelander
We classify the metric spaces that can be approximated by finite homogeneous ones.