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.** Tsirelsonโs space and other exotic constructions (TeX, video)

### Science and mathematics

### Other

### Friends

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