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Monday, September 11, 2017

**Abstract:** In short, Topological Modular Forms (tmf) is a “universal elliptic cohomology theory”. More precisely, it is the global section of a sheaf of $E_\infty$-ring spectra over the moduli stack of (generalized) elliptic curves. In this talk, I’ll introduce tmf and sketch the construction of it (or really this sheaf of $E_\infty$ ring spectra). If time allows, I’ll also explain its relationship to classical modular forms.

Monday, September 18, 2017

Monday, September 25, 2017

Monday, October 2, 2017

Monday, October 9, 2017

Monday, October 16, 2017