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# Professor Sergei Gukov, Caltech – Mathematics Colloquium

## January 17 @ 4:00 pm - 5:00 pm

Tea at 3:30 pm in Phillips Hall 330

**Title:** “Zed-hat”

**Abstract:** The goal of this talk, intended for a broader audience, will be to introduce a class of functions that answer a question in topology, can be computed via analytic methods more common in the theory of dynamical systems, and in the end turn out to enjoy beautiful modular properties of the type first observed by Ramanujan.