This is a landing page for things that, for whatever reason, might not have a place elsewhere on the site.

Expository notes

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)
E8. Tsirelsonโ€™s space and other exotic constructions (TeX, video)

Science and mathematics