## Geometry/Topology Seminar Schedule

Please see the following for more related talks:
The Geometry/Topology seminar is organized this academic year (2020-2021) by Ziva K. Myer and Demetre Kazaras

**Upcoming Seminars:**
- Monday, November 28, 2022, 3:15pm, Physics 119, Geometry/topology Seminar

*Homology cobordism and knot concordance*

Sally Collins (Georgia Tech, Mathematics)
- The 0-surgeries of two knots K1 and K2 are homology cobordant rel meridians if there exists an integer homology cobordism X between them such that the two positive knot meridians are in the same homology class of X. It is a natural question to ask: if two knots have the “same” 0-surgeries in this sense, must they be smoothly concordant? We give a pair of knots as counterexample, with one of concordance order two and the other of infinite order, and along the way expand upon a Floer homology technique for obstructing torsion in the smooth concordance group first introduced by Hom, Kang, Park, and Stoffregen.

- Monday, December 5, 2022, 3:15pm, Physics 119, Geometry/topology Seminar

*TBA*

Chindu Mohanakumar (Duke)
- TBA

- Monday, December 12, 2022, 3:15pm, Physics 119, Geometry/topology Seminar

*TBA*

Hugo Zhou (Georgia Tech, Mathematics)
- Monday, April 24, 2023, 3:15pm, Physics 119, Geometry/topology Seminar

*TBD*

Christos Mantoulidis (Rice University, Mathematics)
- TBD

### Geometry and Topology at Duke

More information about geometry and topology at Duke can be obtained by consulting the pages:

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