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# Colloquium – Dave Auckly (Kansas State University)

## February 25 @ 11:00 am - 12:00 pm

**Title**: Physics in Families and analysis to compute invariants of exotic structures in 4D

**Abstract**: Partial differential equations that were first introduced as a model for particle interactions may be used to define topological invariants. We will review a small bit of the history of these equations. The next question that arises is how to compute such invariants. We will define a new invariant via gauge-theoretic equations and describe how it may be computed in some cases.