Abstracts

Week of September 4, 2022

September 6, 2022
Geometry & Topology Pleated surfaces in PSL(d,C) and their coordinates 4:15pm -
LOM 214

Thurston introduced pleated surfaces as a powerful tool to study hyperbolic 3-manifolds.
An abstract pleated surface is a representation of the fundamental group of a hyperbolic surface into the Lie group PSL(2,C) of orientation
preserving isometries of hyperbolic 3-space together with an equivariant map from the hyperbolic plane into hyperbolic 3-space which satisfies additional properties.

In this talk, we introduce a notion of d-pleated surface for representations into PSL(d,C) which is motivated by the theory of Anosov
representations. In addition, we give a holomorphic parametrization of the space of d-pleated surfaces via cocyclic pairs, thus generalizing a result of Bonahon.

This talk is based on joint work with Sara Maloni, Filippo Mazzoli and Tengren Zhang.

September 9, 2022
Friday Morning Seminar Friday Mornings 10:30am -
LOM 205

The Friday morning seminar has its first meeting this Friday, 10:30am,

room LOM205.

This is a relaxed-pace seminar on impromptu subjects related to

the interests of the audience.

Everyone of all backgrounds are welcome. Last semester the subjects were (mostly) geometry, probability, combinatorics, dynamics.

Hope to see you there!