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Power Operations and Normed Spectra

Jeremiah Heller, UIUC
Tuesday, April 11, 2023 - 3:30pm to 4:30pm
PDL C-401
headshot of Jeremiah Heller; glasses, mustache, corduroy blazer

A key feature in the theory of \(E_\infty\) ring spectra in algebraic topology is that their homology and homotopy admit a theory of power operations. It is straightforward to introduce the direct analog of \(E_\infty\) ring spectra in motivic homotopy theory, but the power operations arising from this structure are not as useful.  There is a subtler theory of normed motivic spectra, introduced by Bachmann-Hoyois. In recent preprints, joint with Tom Bachmann and Elden Elmanto, we develop a theory of power operations on normed algebras over the mod-2 motivic cohomology spectrum. I'll discuss this construction and some applications of the resulting theory.

There will be a pre-talk aimed at graduate students 2:30-3:15pm in THO 234.

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