This is a landing page for things that, for whatever reason, might not have a place elsewhere on the site.
E1. On the probability that two integers are relatively prime (TeX)
E2. The Burnside problem (TeX)
E3. Weyl trees of famous irrational numbers (code)
E4. A crash course on generating functions (TeX)
E5. On the divisibility of a random variable (TeX)
E6. The Littlewood-Offord problem (TeX, video)
E7. Ergodic theory and arithmetic progressions (TeX, video)