Sometimes the best advice is no advice

A short dissent on USA eligibility

Unnecessarily detailed stories of my Mystery Hunt puzzles

Some puzzle-writing thoughts from an amateur

USEMO Problem Development, Behind the Scenes

USA Special Team Selection Test Series for IMO 2021

Meritocracy is the worst form of admissions except for all the other ones

MOP should do a better job of supporting its students in not-June

Undergraduate Math 011: a firsT yeaR coursE in geometrY

RMM 2019 pictures and aftermath

Story: the morning after Valentine’s Day

Some things Evan is working on for 2019

A few shockingly linear graphs

A trailer for p-adic analysis, second half: Mahler coefficients

A trailer for p-adic analysis, first half: USA TST 2003

New oly handout: Constructing Diagrams

I switched to point-based problem sets

Revisiting arc midpoints in complex numbers

A story of block-ascending permutations

117(d): Please don’t tax PhD tuition waivers

Joyal’s Proof of Cayley’s Tree Formula

Positive Definite Quadratic Forms

Some Thoughts on Olympiad Material Design

Holomorphic Logarithms and Roots

Facts about Lie Groups and Algebras

Combinatorial Nullstellensatz and List Coloring

Notes on Publishing My Textbook

A Sketchy Overview of Green-Tao

Formal vs Functional Series (OR: Generating Function Voodoo Magic)

New algebra handouts on my website

Approximating E3-LIN is NP-Hard

Against the “Research vs. Olympiads” Mantra

Vinogradov’s Three-Prime Theorem (with Sammy Luo and Ryan Alweiss)

The Structure Theorem over PID’s

18.099 Transcript: Bourgain’s Theorem

18.099 Transcript: Chang’s Theorem

Mechanism Design and Revenue Equivalence

Some Advice for Olympiad Geometry

Rant: Matrices Are Not Arrays of Numbers

Writing Olympiad Geometry Problems

Uniqueness of Solutions for DiffEq’s

Constructing the Tangent and Cotangent Space

Linnik’s Theorem for Sato-Tate Laws on CM Elliptic Curves

Proof of Dirichlet’s Theorem on Arithmetic Progressions

Cauchy’s Functional Equation and Zorn’s Lemma

Representation Theory, Part 4: The Finite Regular Representation

Represenation Theory, Part 3: Products of Representations

Representation Theory, Part 2: Schur’s Lemma

Representation Theory, Part 1: Irreducibles and Maschke’s Theorem

Three Properties of Isogonal Conjugates

Set Theory, Part 2: Constructing the Ordinals

Set Theory, Part 1: An Intro to ZFC

Why do roots come in conjugate pairs?

What leads to success at math contests?

Email, JetPack, and Wintermelon