Coordinates: JH Michell Theatre in the Richard Berry Building
Speaker: Michel Boileau (Institut de Mathematiques de Toulouse, Universite Paul Sabatier)
Title: Graph manifolds which are integral homology 3-spheres and taut foliations
Abstract: (Joint work with Steve Boyer.)

We show that a graph manifold, which is an integral homology 3-sphere and is neither the 3-sphere or the Poincare sphere, admits a taut foliation which is transverse to the fibers in each Seifert piece. This result gives a new proof that such a manifold has a left-orderable fundamental group and is not an L-space.