Vorlesungen über die Algebra der Logik¶
Schröder, E. (. (1905). Vorlesungen über die Algebra der Logik.
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Primes¶
- Idempotence
- … is the defining property of idempotent elements in algebraic structures — an element `a` of a semigroup or ring satisfies `a · a = a`; idempotent elements of a Boolean algebra are the algebra itself (every `b ∈ B` satisfies `b ∧ b = b` and `b ∨ b = b`, as Boole (1854) and later Schröder (1890–1905) systematized
This sourceB. G. Teubner. Three volumes; Vol. 1 (1890) formalizes Boolean idempotency in comprehensive algebraic system. (Systematic formalization of idempotence in Boolean algebras; foundation for 20th-century algebraic logic.)
- … is the defining property of idempotent elements in algebraic structures — an element `a` of a semigroup or ring satisfies `a · a = a`; idempotent elements of a Boolean algebra are the algebra itself (every `b ∈ B` satisfies `b ∧ b = b` and `b ∨ b = b`, as Boole (1854) and later Schröder (1890–1905) systematized
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