This is a now page. It’s my public answer to “what have you been up to lately”? Last updated 24 July 2025.

Coordinates

I’m a bit nomadic now, but starting from August 2025, I will officially be based in Durham, near Duke.

Things I’m doing

• I’m still running OTIS, 10 years later.

  • For the 2025-2026 school year, OTIS will officially be a full-time job. Accordingly, I finally made OTIS into an LLC.
  • That said, I feel like OTIS hasn’t evolved much in the last few years. The number of students has stabilized to around 750 per year, and I haven’t had many new ideas for topics or infrastructure. I feel like the program could use some fresh life.
  • I’m also thinking about what might happen beyond competitions. In particular, the USA math contest system has a lot of serious issues now, and I don’t want it to be the only pathway to math in the USA.

• Starting in January 2025, I’ve been occasionally studying some Korean. I don’t really have any compelling reason why. I’ve just decided this is something I want to try. But I haven’t made much progress.

Recent checkpoints

• I had a busy summer in 2025, where among other things, I taught at MOP as assistant director, visited the Duluth REU, and attended IMO 2025 as a coordinator (I was on problem 3 with Gheehyun Nahm).

• In March 2025, the 2025 Teammate Hunt aired. See the wrapup and author notes on my puzzle.

• In January 2025 I finished a multivariable calculus textbook that I wrote primarily during the fall of 2024, when I was teaching a recitation section. That book is now on MIT OpenCourseWare.

• In December 2024 I defended my thesis, and in February 2025 I finally received my diploma. (It went to the spam folder in my email, which is hilarious.)