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Algebra and Geometry Seminar

Monday, October 18, 2021
4:00pm to 5:00pm
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Linde Hall 387
A Categorical Künneth Formula for Weil Sheaves
Tamir Hemo, Department of Mathematics, Caltech,

The failure of the product formula for fundamental groups of schemes in characteristic p > 0 was explained by Drinfeld who proved a product formula holds by taking into account the extra Frobenius symmetry. In this work, we upgrade Drinfeld's equivalence to a Künneth-type equivalence of derived categories for appropriately defined categories of lisse and constructible Weil sheaves. This is joint work with Timo Richarz and Jakob Scholbach.

For more information, please contact Math Department by phone at 626-395-4335 or by email at mathinfo@caltech.edu.