## Geometry/Topology Seminar Schedule

Please see the following for more related talks:
The Geometry/Topology seminar is organized this academic year (2017-2018) by Ákos Nagy and Michael Abel

**Upcoming Seminars:**
- Monday, April 23, 2018, 3:15pm, 119 Physics, Geometry/topology Seminar

*Asymptotic geometry of hyperpolygons*

Steven Rayan (University of Saskatchewan, Department of Mathematics & Statistics)
- Nakajima quiver varieties lie at the interface of geometry and representation theory and provide an important class of examples of Calabi-Yau manifolds. I will discuss a particular instance, hyperpolygon space, which arises from a certain shape of quiver. The simplest of these is a noncompact complex surface admitting the structure of an "instanton", and therefore fits nicely into the Kronheimer-Nakajima classification of ALE hyperkaehler 4-manifolds, which is a geometric realization of the McKay correspondence for finite subgroups of SU(2). For more general hyperpolygon spaces, we can speculate on how this classification might be extended by studying the geometry of hyperpolygons at "infinity". This talk represents previous work with Jonathan Fisher and ongoing work with Hartmut Weiss.

### Geometry and Topology at Duke

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

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