### G&T Pre-Talk: TBA by Michelle Chu

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, April 20, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Michelle Chu – University of Illinois at Chicago – michu@uic.edu

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- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, April 20, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Michelle Chu – University of Illinois at Chicago – michu@uic.edu

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, April 13, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Maggie Miller – Princeton University – maggiem@math.princeton.edu

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, March 30, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skile 006
- Speaker
- Anthony Conway – Max Planck Institut für Mathematik – anthonyyconway@gmail.com

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, March 9, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Allison Miller – Rice University – allison.miller@rice.edu

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, February 17, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Kate Poirier – CUNY - City College of Technology – KPoirier@citytech.cuny.edu

String topology studies various algebraic structures given by intersecting loops in a manifold, as well as those on the Hochschild chains or homology of an algebra. In this preparatory talk, we survey a collection of such structures and their relationships with one another.

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, February 3, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Gage Martin – Boston College – martaic@bc.edu

A discussion of Khovanov-Lee homology, how to extract some invariants of braid closures from the homology theory, and motivation for studying both the homology theory and the invariants.

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, January 27, 2020 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Manuel Rivera – Purdue – river227@purdue.edu

In the first talk I will introduce the main constructions, many of which are classical, from scratch. This part will be introductory and accessible to a general audience with a basic knowledge of topology. This introduction will also serve as preparation for the main talk in which I will outline the proof and discuss some applications.

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, December 2, 2019 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Speaker
- Jonathan Johnson – The University of Texas at Austin – jjohnson@math.utexas.edu

I will discuss the orderability of the fundamental groups of knot complements including known results, a useful technique using some ideas of Baumslag, and some interesting questions that have recently arisen from this study.

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, November 4, 2019 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Tom Hockenhull – University of Glasgow

I’ll try and give some background on the definition of knot Floer homology, and perhaps also bordered Heegaard Floer homology if time permits.

- Series
- Geometry Topology Seminar Pre-talk
- Time
- Monday, October 28, 2019 - 12:45 for 1 hour (actually 50 minutes)
- Location
- Skile 006
- Speaker
- Sungkyung Kang – Chinese University of Hong Kong

Heegaard Floer homology gives a powerful invariant of closed 3-manifolds. It is always computable in the purely combinatorial sense, but usually computing it needs a very hard work. However, for certain graph 3-manifolds, its minus-flavored Heegaard Floer homology can be easily computed in terms of lattice homology, due to Nemethi. I plan to give the basic definitions and constructions of Heegaard Floer theory and lattice homology, as well as the isomorphism between those two objects.

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