===== HW 1 =====
  - Read Ross section 3, and section 4 , especially density of $\mathbb{Q}$ in $\R$.
  - Read Prof Hutchings' [[https://math.berkeley.edu/~hutching/teach/proofs.pdf | story about proof]]
  - Ross: 1.1, 1.3, 1.6, 2.3, 4.7, 4.14, 4.15
  - Challenge: 2.7 (just for fun, no need for submission)