### TBA by Tao Yu

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, April 1, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Tao Yu – Georgia Tech

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- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, April 1, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Tao Yu – Georgia Tech

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, March 25, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, March 4, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Sally Collins – Georgia Tech

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, February 26, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Hugo Zhou – Georgia Tech

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, February 19, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Sudipta Kolay – Georgia Tech

An embedding of a manifold into a trivial disc bundle over another manifold is called braided if projection onto the first factor gives a branched cover. This notion generalizes closed braids in the solid torus, and gives an explicit way to construct many embeddings in higher dimensions. In this talk, we will discuss when a covering map of surfaces lift to a braided embedding.

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, February 12, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker

**Please Note:** This is an ordinary research Geometry/Topology seminar:
https://math.gatech.edu/seminars-colloquia/series/geometry-topology-seminar/s-garoufalidis-20200212

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, February 5, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Agniva Roy – Georgia Tech

A useful way of studying contact 3 manifolds is by looking at their open book decompositions. A result of Akbulut-Ozbagci, Ghiggini, and Loi-Piergallini showed that the manifold is filled by a Stein manifold if and only if the monodromy of an open book can be factorised as the product of positive Dehn twists. Then, the problem of classifying minimal fillings of contact 3 manifolds, or answering questions about which manifolds can be realised by Legendrian surgery, becomes questions about finding factorisations for a given mapping class. This talk will be expository and expand upon how these mapping classes come up, and also discuss known results, techniques, and future directions for research.

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, January 29, 2020 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Anubhav Mukherjee – Georgia Tech

In the world of 4 manifolds, finding exotic structures on 4 manifolds is considered one of most interesting and difficult problems. I will give a brief history of this and explain a very interesting tool "knot surgery" defined by Fintushel and Stern. In this talk I will mostly focused on drawing pictures. If time permits, I will talk various interesting applications.

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, January 22, 2020 - 13:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Hyun Ki Min – Georgia Tech

**Please Note:** Note the unusual time

Gordon and Luecke showed that the knot complements determine the isotopy classes of knots in S^3. In this talk, we will study the topology of various knot complements in S^3: torus knots, cable knots, satellite knots, etc. As an application, we will see some knot invariants using knot complements.

- Series
- Geometry Topology Student Seminar
- Time
- Wednesday, December 11, 2019 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Skile 006
- Speaker
- None – None

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