For olympiad students: I have now published some new algebra handouts. They are: Introduction to Functional Equations, which cover the basic techniques and theory for FE's typically appearing on olympiads like USA(J)MO. Monsters, an advanced handout which covers functional equations that have pathological solutions. It covers in detail the solutions to Cauchy functional equation. Summation,… Continue reading New algebra handouts on my website
EDIT: Here's a July 19 draft that fixes some of the glaring issues that were pointed out. This morning I finally uploaded the first drafts of my Napkin project, which I've been working on since December 2014. See the Napkin tab above for a listing of all drafts. Napkin is my personal exposition project, which… Continue reading First drafts of Napkin up!