I am Associate Professor at UC Berkeley. I am interested in number theory and its connections to algebraic geometry, representation theory, and algebraic topology.
I am also currently a Research Scientist at Google DeepMind.
My CV is available.
I am co-PI of the Berkeley RTG on Numbers, Symmetry, and Geometry (along with David Nadler, Martin Olsson, Sug Woo Shin, and Yunqing Tang).
E-mail: fengt[aat]berkeley[doot]edu.
News: (updated Sep, 2026)
- Uploaded a revision to, Modularity functoriality in the Local Langlands Correspondence. This simplifies and improves the previous version, in particular removing technical assumptions on small \ell, as is needed for the below joint works with Cotner.
- Uploaded a new paper (with Sean Cotner), Local Langlands functoriality for Yu's supercuspidals II: Fargues--Scholze's parametrization.
- Uploaded a new paper (wwith Sean Cotner), Local Langlands functoriality for Yu's supercuspidals I: Kaletha's parametrization.
- Uploaded a new paper (with Zhiwei Yun and Wei Zhang), Modularity of higher theta series III: Proof of the Modularity Conjecture.
Short Vita:
- Associate Professor, UC Berkeley 2022-Present
- Viterbi Postdoctoral Fellow, MSRI/SLMath 2023
- C L E Moore Instructor and NSF Postdoctoral Fellow, MIT 2019-2022 (Sponsor: Wei Zhang)
- Member, Institute for Advanced Study 2020-2021
- Ph.D., Stanford University 2019 (Advisor: Akshay Venkatesh)
- MASt, Cambridge University 2014 (Part III)
- A.B.+A.M., Harvard University 2013 (Mathematics concentration, Computer Science secondary)