Hi,
A problem regarding scale invariant groups, solved and extended by Nekrashevych and Pete.
Is there an infinite expander?
Recent progress on percolation beyond Zd
Gabor on linear entropy conformal invariant models
Links: Gabor Pete, Ariel Yadin, Naomi, Uri Aran, Uri Aran Aloni, Dan Aran
itai(dot)benjamini"at"weizmann(dot)ac(dot)il