Ursula Whitcher - Diagonal pencils and Hasse-Witt Invariants

  • 9 June 2022
  • 15:00
  • SCH.1.05

Presented by Ursula Whitcher (AMS)

Using a natural combinatorial generalization of the Fermat quartic and the Batyrev mirror symmetry construction, we obtain a collection of K3 surface pencils of generic Picard rank 19 in Gorenstein Fano toric varieties. We characterize point counts on these varieties over finite fields using Picard-Fuchs equations and classical hypergeometric functions. This talk describes joint work with Adriana Salerno. 

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