## 3-Manifold Seminar: Fiberings of congruence covers of arithmetic manifolds

Seminar | February 28 | 3:40-5 p.m. | 891 Evans Hall

Ian Agol, UC Berkeley

Department of Mathematics

We'll discuss a condition to guarantee that a tower of congruence $p$-covers of an arithmetic hyperbolic 3-manifold have the RFRS property (Residually Finite Rational Solvable), and hence virtually fiber. We'll spend some time discussing the Bass-Serre tree which is the basis for this criterion.

events@math.berkeley.edu