lesson 1

# Sets of Numbers

• The Set N of Natural Numbers
$${\rm{N = \{ 0,1,2,3,4, }}...{\rm{ \} }}$$
• The Set Z of Integers

$${\rm{Z = \{ }}...{\rm{ , - 3, - 2, - 1, 0,1,2,3, }}...{\rm{ \} }}$$

• The Set Z+...