Boolean (adj.)

A term from mathematical logic (where it characterizes a type of algebra in which logical symbols are used to represent relations between sets); named after George Boole (1815–64), and widely used in COMPUTATIONAL LINGUISTICS and certain kinds of SEMANTICS, where it elucidates PROPOSITIONS linked by the three fundamental logical operations and, or, and not (Boolean operators). Boolean algebra or logic is especially relevant in cases which deal with mutually exclusive alternatives, such as BINARY features.