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Named after George Boole (1815–1864), an English mathematician, educator, philosopher and logician.
- (algebra) An algebraic structure where and are idempotent binary operators, is a unary involutory operator (called "complement"), and 0 and 1 are nullary operators (i.e., constants), such that is a commutative monoid, is a commutative monoid, and distribute with respect to each other, and such that combining two complementary elements through one binary operator yields the identity of the other binary operator. (See Boolean algebra (structure)#Axiomatics.)
- The set of divisors of 30, with binary operators: g.c.d. and l.c.m., unary operator: division into 30, and identity elements: 1 and 30, forms a Boolean algebra.
- A Boolean algebra is a De Morgan algebra which also satisfies the law of excluded middle and the law of noncontradiction.
- (algebra, logic, computing) Specifically, an algebra in which all elements can take only one of two values (typically 0 and 1, or "true" and "false") and are subject to operations based on AND, OR and NOT
- (mathematics) The study of such algebras; Boolean logic, classical logic.
- (Specifically ...): switching algebra
- Kleene algebra
- Heyting algebra