Group Actions Seminar: Thomas, Friedl

There will be a Group Actions Seminar at the University of Sydney this
week, on Thursday 28 March.  The speakers will be Anne Thomas (Sydney) and Stefan
Friedl (Cologne).  Titles and abstracts are below.

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Date: Thursday 28 March

Time: 12 noon

Location: Carslaw 707A, University of Sydney

Speaker: Anne Thomas (University of Sydney)

Title: Lattices, polyhedral complexes and cubulations

Abstract: Let X be a locally finite polyhedral complex, such as a
tree, a product of trees, a Davis complex or a building.  Then G =
Aut(X) is naturally a locally compact group, and we can compare
lattices in G to lattices in Lie groups.  I will survey the impact of
recent work of Agol and Wise on the study of lattices in G.

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Date: Thursday 28 March

Time: 3pm

Location: Carslaw 707A, University of Sydney

Speaker: Stefan Friedl (University of Cologne)

Title: The virtual fibering theorem for 3-manifolds

Abstract: Agol and Wise showed that any hyperbolic 3-manifold admits a
finite cover which is a surface bundle over S^1.  We will give an
alternative account of one of the key steps in the proof of this
theorem.   This is joint work with Takahiro Kitayama.

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