Difference between revisions of "Logical negation"

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==See also==
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==Syllabus==
  
 
===Logical operators===
 
===Logical operators===
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* [[Ampheck]]
 
* [[Ampheck]]
* [[Boolean algebra]]
 
 
* [[Boolean domain]]
 
* [[Boolean domain]]
 
* [[Boolean function]]
 
* [[Boolean function]]
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* [[Boolean-valued function]]
 
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* [[Boolean logic]]
 
* [[Laws of Form]]
 
* [[Logic gate]]
 
 
* [[Logical graph]]
 
* [[Logical graph]]
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* [[Logical matrix]]
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* [[Minimal negation operator]]
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* [[Peirce's law]]
 
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* [[Peirce's law]]
 
 
* [[Propositional calculus]]
 
* [[Propositional calculus]]
* [[Sole sufficient operator]]
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* [[Truth table]]
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* [[Universe of discourse]]
 
* [[Zeroth order logic]]
 
* [[Zeroth order logic]]
 
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==Document history==
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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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* [http://mywikibiz.com/Logical_negation Logical Negation], [http://mywikibiz.com/ MyWikiBiz]
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* [http://beta.wikiversity.org/wiki/Logical_negation Logical Negation], [http://beta.wikiversity.org/ Beta Wikiversity]
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* [http://www.getwiki.net/-Logical_Negation Logical Negation], [http://www.getwiki.net/ GetWiki]
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* [http://www.wikinfo.org/index.php/Logical_negation Logical Negation], [http://www.wikinfo.org/ Wikinfo]
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* [http://www.textop.org/wiki/index.php?title=Logical_negation Logical Negation], [http://www.textop.org/wiki/ Textop Wiki]
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* [http://en.wikipedia.org/w/index.php?title=Negation&oldid=77111608 Logical Negation], [http://en.wikipedia.org/ Wikipedia]
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[[Category:Computer Science]]
 
[[Category:Computer Science]]
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[[Category:Philosophy]]
 
[[Category:Philosophy]]
 
[[Category:Semiotics]]
 
[[Category:Semiotics]]
 
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Revision as of 23:38, 5 April 2010

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 NOT p (also written as ~p or ¬p) is as follows:


Logical Negation
p ¬p
F T
T F


The logical negation of a proposition p is notated in different ways in various contexts of discussion and fields of application. Among these variants are the following:


Variant Notations
Notation Vocalization
\(\bar{p}\) bar p
\(p'\!\) p prime,

p complement

\(!p\!\) bang p


Syllabus

Logical operators

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Related topics

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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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