NullCanBeARealCoolValue NullCanBeARealCoolValue - 2 months ago 11
LaTeX Question

"Not equivalent to" in LaTeX

I want to do a $\Longleftrightarrow$ with a dash over it, indicating "A is NOT equivalent to B", but $\not \Longleftrightarrow$ does not center the dash. This looks ugly. Are there other solutions?

Answer

The centernot package provides this functionality:

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\documentclass{article}

\usepackage{centernot}

\begin{document}

$A \Longleftrightarrow B \centernot{\Longleftrightarrow} C$

\end{document}

Reference: How to negate a specific symbol?

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