<equivalence, analogy, similarity, epistemology, logic>, <semantics> a rule of replacement of the forms:
( p v ( q v r ) ) = ( ( p v q ) v r ) ( p & ( q & r ) ) = ( ( p & q ) & r )
Example: "Harold is over 21, and so are Jane and Kelly." is equivalent to "Harold and Jane are over 21, and so is Kelly." The associativity of both disjunction and conjunction can be demonstrated by truth-table analysis.
[A Dictionary of Philosophical Terms and Names]
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