Sets of Numbers

Sets

Symbol	Description
$\mathbb{N}$	Set of all natural numbers $\{0,1,2,...\}$
$\mathbb{Z}$	Set of all integers
$\mathbb{Q}$	Set of all rational numbers (Numbers that can be expressed as a fraction)
$\mathbb{R}$	Set of all real numbers (Any number)
$\mathbb{C}$	Set of all complex numbers

Subscript / Superscript

Symbol	Description
${\mathbb{Z}}^{+}$	Set of all positive integers
${\mathbb{R}}^{-}$	Set of all negative real numbers
${\mathbb{Z}}_{\ge 12}$	Set of all integers greater or equal to 12
Note: 0 is neither positive nor negative