Boolean is a 'true or false' logic in programming - if you define a function as a Boolean function, the only inputs it can have are true or false, and the output will vary dependant on the input

A boolean function is a function that only works with values that can only have two values, often called "true" and "false", or alternately, "1" and "0".

One use of Boolean algebra is to minimize any function or logic gate.

+ is the symbol

A logical or boolean function is one that works with logical or boolean values - values that can only be either true, or false.