LaTeX Logical Not (¬) - Complete Guide
The logical NOT symbol (¬) represents negation in boolean logic.
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Logical Not
LaTeX Code
No package required
\lnotLogical NOT
No package required
\negAlternative: neg
What is the LaTeX Logical Not?
¬P is true if and only if P is false. It reverses the truth value of a proposition.
How to Use Logical Not in LaTeX
Method 1: Using \lnot
✅No package required
Logical NOT
Example: Using \lnot
\documentclass{article}
\begin{document}
% Using the Logical Not
Text with \lnot
\end{document}Method 2: Using \neg
✅No package required
Alternative: neg
Example: Using \neg
\documentclass{article}
\begin{document}
% Using the Logical Not
Text with \neg
\end{document}Common Use Cases
The Logical Not symbol is commonly used in the following contexts:
Logical Negation
Opposite of a condition.
Code
$\lnot P$Output
¬P
Complete Examples
Logical NOT
Logical negation example
\documentclass{article}
\begin{document}
If P is true, then $\lnot P$ is false.
\end{document}Frequently Asked Questions
Which method should I use?
We recommend using the method marked as "Recommended" above. However, the best method depends on your specific needs:
- \lnot: Logical NOT
- \neg: Alternative: neg
Where do I use this symbol?
This symbol can be used:
- In mathematical equations (math mode)
- In regular text (if using text mode)
- In various document environments
Can I use this in display mode?
Yes, symbols that work in math mode (between $ $) also work in display mode (between $$ $$). This allows you to display the symbol on its own line with larger formatting.
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