The less than or equal to symbol is used to express the relationship between two quantities or as a boolean logical operator. For example, the symbol is used below to express the lessthanorequal relationship between two variables:
$a≤b$
In plain langauge, this means that the variable $a$ is less than or equal to the variable $b$.
Symbol  Format  Data 

≤  Unicode 

$≤$  TeX 

SVG 