## Seminars and Colloquia by Series

Friday, October 20, 2017 - 13:55 , Location: Skiles 006 , John Etnyre , Georgia Tech , Organizer: John Etnyre

Note this talk is only 1 hour (to allow for the&nbsp;GT MAP seminar at 3.

In this series of talks I will introduce branched coverings of manifolds and sketch proofs of most the known results in low dimensions (such as every 3 manifold is a 3-fold branched cover over a knot in the 3-sphere and the existence of universal knots). This week we will continue studying branched covers of surfaces. Among other things we should be able to see how to use branched covers to see some relations in the mapping class group of surfaces.
Friday, October 13, 2017 - 13:55 , Location: Skiles 006 , John Etnyre , Georgia Tech , Organizer: John Etnyre
In this series of talks I will introduce branched coverings of manifolds and sketch proofs of most the known results in low dimensions (such as every 3 manifold is a 3-fold branched cover over a knot in the 3-sphere and the existence of universal knots). Along the way several open problems will be discussed.
Friday, September 29, 2017 - 13:55 , Location: Skiles 006 , Peter Lambert-Cole , Georgia Institute of Technology , Organizer: Peter Lambert-Cole
In this talk, I will present Arnold's famous ADE classification of simple singularities.
Friday, September 22, 2017 - 13:55 , Location: Skiles 006 , None , None , Organizer: John Etnyre
Friday, September 15, 2017 - 13:55 , Location: Skiles 006 , Peter Lambert-Cole , Georgia Institute of Technology , Organizer: Peter Lambert-Cole
In this series of talks, I will introduce basic concepts and results in singularity theory of smooth and holomorphic maps.  In the first talk, I will present a gentle introduction to the elements of singularity theory and give a proof of the well-known Morse Lemma that illustrates key geometric and algebraic principles of singularity theory.
Friday, September 1, 2017 - 13:55 , Location: Skiles 006 , None , None , Organizer: John Etnyre
Friday, August 25, 2017 - 13:55 , Location: Skiles 006 , None , None , Organizer: John Etnyre
Friday, April 14, 2017 - 14:00 , Location: Skiles 006 , None , None , Organizer: John Etnyre
Friday, March 17, 2017 - 14:00 , Location: Skiles 006 , John Etnyre , Georgia Tech , Organizer: John Etnyre

This will be a 1.5 hour (maybe slightly longer) seminar.&nbsp;

Following up on the previous series of talks we will show how to construct Lagrangian Floer homology and discuss it properties.
Friday, March 10, 2017 - 14:00 , Location: Skiles 006 , John Etnyre , Georgia Tech , Organizer: John Etnyre

This will be a 1.5 hour seminar.&nbsp;

Following up on the previous series of talks we will show how to construct Lagrangian Floer homology and discuss it properties.