Difference between revisions of "Logical negation"

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* [http://mywikibiz.com/Logical_negation Logical Negation @ MyWikiBiz]
 
* [http://mywikibiz.com/Logical_negation Logical Negation @ MyWikiBiz]
* [http://mathweb.org/wiki/Logical_negation Logical Negation @ MathWeb Wiki]
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* [http://intersci.ss.uci.edu/wiki/index.php/Logical_negation Logical Negation @ InterSciWiki]
* [http://netknowledge.org/wiki/Logical_negation Logical Negation @ NetKnowledge]
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* [http://wiki.oercommons.org/mediawiki/index.php/Logical_negation Logical Negation @ OER Commons]
 
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* [http://wiki.oercommons.org/mediawiki/index.php/Logical_negation Logical Negation @ OER Commons]
 
 
* [http://p2pfoundation.net/Logical_Negation Logical Negation @ P2P Foundation]
 
* [http://p2pfoundation.net/Logical_Negation Logical Negation @ P2P Foundation]
* [http://semanticweb.org/wiki/Logical_negation Logical Negation @ SemanticWeb]
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* [http://ref.subwiki.org/wiki/Logical_negation Logical Negation @ Subject Wikis]
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* [http://beta.wikiversity.org/wiki/Logical_negation Logical Negation @ Wikiversity Beta]
 
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Revision as of 02:32, 16 May 2012

This page belongs to resource collections on Logic and Inquiry.

Logical negation is an operation on one logical value, typically the value of a proposition, that produces a value of true when its operand is false and a value of false when its operand is true.

The truth table of \(\operatorname{NOT}~ p,\) also written \(\lnot p,\!\) appears below:


\(\text{Logical Negation}\!\)
\(p\!\) \(\lnot p\!\)
\(\operatorname{F}\) \(\operatorname{T}\)
\(\operatorname{T}\) \(\operatorname{F}\)


The negation of a proposition \(p\!\) may be found notated in various ways in various contexts of application, often merely for typographical convenience. Among these variants are the following:


\(\text{Variant Notations}\!\)
\(\text{Notation}\!\) \(\text{Vocalization}\!\)
\(\bar{p}\!\) \(p\!\) bar
\(\tilde{p}\!\) \(p\!\) tilde
\(p'\!\) \(p\!\) prime
\(p\!\) complement
\(!p\!\) bang \(p\!\)


Syllabus

Focal nodes

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Peer nodes

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Logical operators

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Relational concepts

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Information, Inquiry

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Document history

Portions of the above article were adapted from the following sources under the GNU Free Documentation License, under other applicable licenses, or by permission of the copyright holders.

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