Current Teaching
Math 251: Calculus 1
About me
I am an RTG postdoctoral scholar in the mathematics department at the University of Oregon. My research supervisor is Nick Addington. Recently, I received a Ph.D. from the University of Massachusetts Amherst under the direction of Eyal Markman.
My research interests are in algebraic geometry, and they include hyperkähler geometry, moduli spaces of sheaves, and derived categories. Outside of mathematics I enjoy playing chess, hiking and running, and studying history and languages.
Email: jrfos at uoregon dot edu
Preprints/Publications
The Lefschetz standard conjectures for IHSMs of generalized Kummer deformation type in certain degrees, 2023. (Published in the European Journal of Mathematics.)
Moduli of properly elliptic surfaces of Kodaira dimension one fibered over rational curves, 2024. -- Joint with Dori Bejleri, Andres Fernandez Herrero, Giovanni Inchiostro, Svetlana Makarova, and Junyan Zhao.