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PhD Candidate · UC Berkeley
Hi! I am a third year PhD student at UC Berkeley, and I study arithmetic geometry and number theory. In particular, I am interested in 𝑝-adic geometry and the geometry of Shimura varieties. I am fortunate to be supported by the NSF GRFP, and I am currently advised by both Sug Woo Shin and Yunqing Tang.
My email adress is alexander_feiner@berkeley.edu.
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August 10–14, 2026 · University of Utah, Salt Lake City, UT
August 3–7, 2026 · Brown University, Providence, RI
May 18–22, 2026 · Simons Foundation, New York, NY
April 30 – May 4, 2025 · University of North Texas, Denton, TX
October 18–19, 2025 · Saint Louis University, St. Louis, MO
I spoke on Infinitely wildly ramified arboreal representations for postcritically finite polynomials with potential good reduction.
November 21–23, 2025 · UMass Amherst, Amherst, MA
I am organizing a 𝑝-adic hodge theory learning seminar with Sasha Shashkov. View speaker schedule →
I organized an Étale Cohomology learning seminar with Sai Sanjeev Balakrishnan. View speaker schedule →