How to create "not less than or greater than" symbol?

Question

I recently came across this meme:

(Source: @nathanaelnoir on Twitter)

How can you create that second symbol in LaTeX?

Apparently, several packages do include \nlessgtr, but they have a diagonal slash rather than a vertical strikethrough. (\not\lessgtr produces the same thing.) How can you create a vertical strikethrough through a lessgtr sign?

Does this answer your question? How do I get this Mathematical Symbol in Latex? — naphaneal, Feb 11 '21 at 18:21
https://tex.stackexchange.com/questions/450705/what-is-the-not-less-than-operator-in-latex/450709 also — Rmano, Feb 11 '21 at 18:41
@naphaneal I talked about \not\lessgtr in the question, and explained why what I wanted was different — Akiva Weinberger, Feb 11 '21 at 18:43
@AkivaWeinberger: How about Vertical line superimposed over a letter. — Werner, Feb 11 '21 at 18:46

score 1 · Accepted Answer · answered Feb 11 '21 at 19:15

EDITED to apply \mathrel to get proper spacing:

\documentclass{article}
\usepackage{stackengine}
\newcommand\nlg{\mathrel{\ensurestackMath{\stackengine{0pt}{%
  \stackanchor[-.5ex]{<}{>}}{\mid}{O}{c}{F}{F}{L}}}}
\begin{document}
$x \nlg y$
\end{document}

How to create "not less than or greater than" symbol?

1 Answers1