简体中文
EnglishWho Is Evan Chen and What Can You Find on His Official Website?
Updated
Evan Chen (陳誼廷) is a math olympiad coach who completed a number theory PhD at MIT, and his official homepage is web.evanchen.cc. If you are looking for his competition handouts, training program, books, or contact information, that site is the authoritative starting point — it links out to every major resource he maintains.
Who Evan Chen Is
The site's About section describes him as a math olympiad coach who finished a number theory PhD at MIT, with his thesis supervised by Wei Zhang. He helps train the United States team and runs his own training program, while also streaming olympiad math publicly.
His competition background, as stated on the site:
- IMO gold medalist as a high school student
- Winner of the 2014 USA Math Olympiad, which he took from 12:30am to 5am in Taiwan
- Author of Euclidean Geometry in Math Olympiads, written in high school and published in 2016
Outside of math, the site lists hobbies including Arch Linux, competitive Hanabi, and puzzle hunts — and notes he hates cooking. He also uses the screen name vEnhance.
Key Sections of the Website
The homepage is organized as a navigation hub. The main entry points:
| Section | What it contains |
|---|---|
| About / Now / CV | Background, current activities, and full CV |
| Blog / Microblog | A "serious" blog and a less serious microblog, both with a mailing list |
| Teaching (OTIS) | His own training program |
| OTIS Excerpts | Sample or excerpt material from OTIS |
| OPAL Hunt / Mock AIME | Additional olympiad-oriented resources |
| Olympiad | For beginners, For coaches, Problems, MOP, ELMO, USEMO |
| Publications | EGMO book, Napkin (v1.6), 18.02 book, course notes |
| Recommendations | Mentors, Quotes, FAQs, Rec letters |
| Personal/Hobbies | Puzzle hunts, Games, Photos |
| YouTube/Twitch / Discord | Streaming and community links |
| Filesys concepts / Learning path / LaTeX style / Asy guide | Technical and typesetting guides |
Where to Start Depending on What You Need
If you are a high school student new to math olympiads: the site points you to the beginner's page, his collection of handouts, and the archive of past problems and solutions.
If you want structured training: look at Teaching (OTIS) and OTIS Excerpts. Note that the site describes OTIS as his own training program but does not state pricing or enrollment terms on the homepage — check the linked pages directly rather than assuming it is free.
If you want his books and notes: the Publications section lists the EGMO book, Napkin (v1.6), an 18.02 book, and course notes.
If you need to contact him or request a recommendation letter: use the Contact page and the Rec letters / FAQs entries under Recommendations.
If you want to follow his work casually: the blog, microblog, YouTube/Twitch, and Discord links are all on the homepage.
Practical Notes
- The homepage is a hub, not a single document — most substantive content lives one click away, so treat the section list above as your map.
- The site shows a source repository (git), revision history, and a "suggest edit" link, so corrections go through that channel rather than email.
- The page footer indicates it was updated Wed 23 Sep 2026 (UTC), so the navigation structure reflects a recent revision.