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symmetric laws, considered as postulates used to define the abstract concept of a
poset. Conversely, a lattice can be defined as an algebraic system, or algebra,
having two commutative, associative, idempotent, and contractive operations.
A system of quite a different sort, but still formally fitting into the framework of
linear associative algebras, was described by Boole, who defined certain
operations on statements: If two statements A, B are combined by conjunction (
i.e., the new ...
If n elements of the algebra are taken and m «-ary operations are performed on
them, m elements are obtained on which an m-ary operation can be performed.
In this way an rt-ary operation is obtained by composition. There are also the ...
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The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review