The minus symbol is used in math to represent the arithmetic operator of subtraction. Typically the symbol is used in an expression like this:
In plain language, this means six minus the number five. Below are various formats for the minus symbol.
Symbol  Format  Data 

−  Unicode 

TeX 


SVG 
Subraction is a basic arithmetic operation of taking away one number from another number.
The minus symbol is used in set theory to represent the difference operator for two sets. The operation removes all elements found in one set from another and returns the resulting set.