Email: evan  [at] evanchen•cc

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Teaching (OTIS)

Olympiad

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  •  For beginners

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Homepage of Evan Chen

信言不美,美言不信。

This is the homepage of Evan Chen (known also as vEnhance on certain websites).

I am a math PhD student at MIT, starting in September 2018. My CV is here. Here is a list of my major coursework from undergraduate and graduate school.

Most of my research is either in number theory or enumerative/algebraic combinatorics. My papers are linked on my publications page, and also on the arXiv.

I am actively involved with math olympiad competitions and have authored several olympiad materials, most notably including a geometry textbook. I also teach my own classes.

I am on GitHub, Facebook, Twitch, and WordPress. You can also see my personal page for trivia about myself.

The nine-point circle of $\triangle BIC$ is orthogonal to the circle with diameter $ST$.

Problem source: [Taiwan TST Quiz 2015](https://artofproblemsolving.com/community/c6h1113644p5087419)

Last modified: Mon Nov 2 13:52:21 2020.