# 0: Review of Concepts & Notation

- Page ID
- 7452

Modular Arithmetic

We write the set of integers and the set of natural numbers as:

\[Z\stackrel{\text{def}}{=}\{..., -2, -1, 0, 1, 2, ...\}\nonumber\]

\[N\stackrel{\text{def}}{=}\{0, 1, 2, ...\}\nonumber\]