The equals symbol or equal sign is used in mathematics to assert that two expressions have the same value. It is also used in boolean logic as an operator, evaluating to true or false based on the two input expressions.
Symbol  Format  Data 

=  Unicode 

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SVG 
Two stacked horizontal lines respresents the equals symbol in mathematics. The two expressions on either side are equal, or the same, when the equal sign is placed in between them.