Category:Negation

From ProofWiki
Jump to: navigation, search

This category contains results about the negation operator of propositional logic.
Definitions specific to this category can be found in Definitions/Negation.


The logical not or negation operator is a unary connective whose action is to reverse the truth value of the statement on which it operates.

$\neg p$ is defined as: $p$ is not true, or It is not the case that $p$ is true.

Thus the statement $\neg p$ is called the negation of $p$.


$\neg p$ is voiced not $p$.