Research
I am currently a Wallenberg research fellow based at King’s College London, hosted by Fred Diamond. Before that I did my PhD at Stockholm University under the supervision of Wushi Goldring. I work broadly in Arithmetic Geometry. My current research focuses on intersection theory on Shimura varieties in positive characteristic and the geometry of Zip period maps. Contact details: cooper.simonjohn(at)gmail(dot)com.
Publications
Tautological Rings of Hilbert Modular Varieties
Math. Z. 308(13), 2024
Pushforward of Siegel Flag Varieties in the Chow Ring
J. Algebra 685 (2026), 523–535, 2026
Preprints
Grothendieck Group of the Stack of G-Zips
Preprint, 2024
(with Wushi Goldring) Hodge-Chern Classes and Strata-Effectivity in Tautological Rings
Preprint, 2024