Difference between revisions of "Negation"
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===Subtypes=== | ===Subtypes=== | ||
| − | *[[ | + | *[[Direct negation]] |
| − | *[[ | + | *[[Double negation]] |
| + | *[[External negation]] | ||
| + | *[[Indirect negation]] | ||
| + | *[[Internal negation]] | ||
| + | *[[Sentential negation]] | ||
===See also=== | ===See also=== | ||
| − | *[[ | + | *[[Negative attraction]] |
| − | *[[ | + | *[[Negative raising]] |
| + | *[[Negative transportation]] | ||
| + | *[[Prohibitive]] | ||
===References=== | ===References=== | ||
Revision as of 15:22, 23 March 2009
Negation refers to the situation in which something is said not to be the case.
Negation is the logical operation in propositional logic which turns the truth value of a proposition into its opposite. Proposition Neg phi is true if and only if phi is not true:
(i) phi Neg phi 1 0 0 1
The negation operator Neg is a unary connective. In syllogistic logic, negation can be an operator on terms. Thus in nobody is ill, the term nobody is considered the negation of somebody.
Term properties
Relational adjective: negative
Subtypes
- Direct negation
- Double negation
- External negation
- Indirect negation
- Internal negation
- Sentential negation
See also
References
- Gamut, L.T.F. 1991. Logic, language, and meaning, Univ. of Chicago Press, Chicago.
- Givón, Talmy. 1978. Negation in language: Pragmatics, function, ontology. In: Peter Cole (ed.) Syntax and Semantics, Volume 9 (Pragmatics). New York: Academic Press, 69-112.
- Horn, Lawrence R. 1989. A natural history of negation. Chicago: University of Chicago Press.
