ℂ
Symbol  Format  Data 

ℂ  Code Point 
U+2102 
TeX 
\cnums 

SVG 
The set of complex numbers symbol (ℂ) is used in math to represent the set of complex numbers. Typically, the symbol appears in an expression like this:
In plain language, this expression means the variable is contained within the set of complex numbers.
The Latin capital letter C is used in mathematics as a variable.
Set of natural numbers.
Set of integers symbol.
The set of rational numbers is denoted with the Latin Capital letter Q presented in a doublestruck typeface.
The set of real numbers symbol is a Latin capital R presented in doublestruck typeface.
Complex numbers are an extension of the real number system with useful properties that model two dimensional space and trigonometry.