Announcement for the USEMO 2025: The USEMO 2025 will be held on October 25 - 26, from 12:30pm - 5:00pm ET each day. For competitors, registration will open in early October on AoPS. If you'd like to volunteer for grading, the signup for that is posted on the website now too. You should sign up… Continue reading USEMO 2025 announcement
Category: Publicity
OTIS XI Applications Out
OTIS 2025-2026 applications are due August 1, 2025. The usual fare. https://web.evanchen.cc/otis.html#apply
March 2025 newsflash
Happy Pi Day! Here’s a quick summary of some recent things going on with me: I got my PhD! (I defended my thesis last December.) My multivariable calculus (18.02) notes are published on MIT OpenCourse Ware. The 2025 Teammate Hunt runs from March 28 to April 6. Please check it out! (Yes, I’m on the… Continue reading March 2025 newsflash
OTIS Mock AIME 2025 & USEMO 2024 results
Two pieces of news for high school math contest enthusiasts: OTIS Mock AIME 2025 We're running the OTIS Mock AIME again this year! It'll go from December 19, 2024 to January 20, 2025. New this year is that we're offering two tests, I and II, and you can try either or both. However, unlike the… Continue reading OTIS Mock AIME 2025 & USEMO 2024 results
FrontierMath
This is a short blog post on the FrontierMath benchmark, a set of lots of difficult math problems with easily verifiable answers. Just to be clear, everything written here is my own thoughts and doesn’t necessarily reflect the intention of any collaborators. When you’re setting a problem for a competition like the IMO or Putnam,… Continue reading FrontierMath
September newsflash
Publicity announcements for all things Evan: Twitch stream schedule Twitch Solves ISL will resume on September 13, 2024 and September 20, 2024 at the usual time. Then a two-week break (because I'm traveling on both September 27 and October 4), and then continuing on Fridays for some to-be-determined number of weeks. Check the calendar. In… Continue reading September newsflash
OTIS X applications are open
The tenth year of OTIS is now accepting applications. Due August 1, 2024 for regular deadline and April 30, 2025 for late applications. https://web.evanchen.cc/otis.html#apply The application and syllabus are pretty much going to be the same as in previous years; here are some of the (mostly small) changes: I deleted the question that used to… Continue reading OTIS X applications are open
January newsflash
Here’s a mix of several publicity-related things I’d like to broadcast. AlphaGeometry A lot of you have already heard the buzz about the AlphaGeometry news and Nature paper. (I’ve known about this paper for a while now, so I’m glad I can finally talk about it!) I managed to snag a cameo in the DeepMind… Continue reading January newsflash
OTIS Mock AIME 2024
This is a short advertisement announcing that the OTIS Mock AIME 2024 is out. The short version is that I wanted to give my students a chance to try their hand at problem composition, which they took enthusiastically, and from their submissions I chose 15 problems to replicate an AIME. There's some really nice problems… Continue reading OTIS Mock AIME 2024
An advertisement for what puzzle hunts are about and why they’re cooler than everyday puzzles
I remember when I got the central aha, I justified it to my teammates as “it’d be so cool, so it has to be right”. — Nathan Pinsker This is a post meant to explain what makes puzzle hunts appealing to people who haven't done them before. If you do care about the actual mechanical… Continue reading An advertisement for what puzzle hunts are about and why they’re cooler than everyday puzzles
Power Overwhelming 