Typing Specific Inequality Symbol

Question

I'm trying to type the following symbol in TeX, but I can't seem to find it anywhere. Am I supposed to create it myself? If so, how should I do this? Please and thank you.

Would ⋛ (\gtreqless) or ⋚ (\lesseqgtr) from univode-math, stix, etc. meet your needs? Or the many other variants such as ⪑ or ⪓? — Davislor, Jun 09 '20 at 13:08
If not, you could overlay \geq and \le with \@ooalign. — Davislor, Jun 09 '20 at 13:09

Vincent · Accepted Answer · 2020-06-09T13:59:44.293

3

You could indeed construct it yourself by printing a \leq symbol on a \geq symbol.

\documentclass{article}
\usepackage{amsmath}
\makeatletter
\newcommand*{\leqgeq}{%
    \mathrel{\mathpalette\@leqgeq\relax}%
}
\newcommand*{\@leqgeq}[2]{%
    \makebox[0pt][l]{\(#1\leq\)}\mbox{\(#1\geq\)}%
}
\makeatother
\begin{document}
if \( a \leqgeq b \)

\(\displaystyle a \leqgeq b\)
\(\textstyle a \leqgeq b\)
\(\scriptstyle a \leqgeq b\)
\(\scriptscriptstyle a \leqgeq b\)
\end{document}

edited Jun 09 '20 at 13:59

answered Jun 09 '20 at 13:13

Vincent

20,157

How would you generalize this command to let it operate correctly in subscript or superscript positions? – Mico Jun 09 '20 at 13:44
@Mico Like this? – Vincent Jun 09 '20 at 14:02
Yes, \mathpalette gets the job done. – Mico Jun 09 '20 at 14:03

egreg · Answer 2 · 2020-06-09T13:58:53.623

An easy application of \mathpalette (for taking into account the current math style) and \ooalign (for superimposing two symbols).

\documentclass{article}
\usepackage{amsmath}

\makeatletter
\newcommand{\win}{% weird inequality
  \mathrel{\mathpalette\win@\relax}%
}
\newcommand{\win@}[2]{%
  \ooalign{$\m@th#1\leq$\cr$\m@th#1\geq$\cr}%
}
\makeatother

\begin{document}

$a\win b$

$\scriptstyle a\win b$

$\scriptscriptstyle a\win b$

\end{document}

Before you ask a new question, here's how to cope also with < and >.

\documentclass{article}
\usepackage{amsmath}

\makeatletter
\newcommand{\win}{% weird inequality
  \mathrel{\mathpalette\win@{<>}}%
}
\newcommand{\wineq}{% weird inequality
  \mathrel{\mathpalette\win@{\leq\geq}}%
}
\newcommand{\win@}[2]{\win@@{#1}#2}
\newcommand{\win@@}[3]{%
  \ooalign{$\m@th#1#2$\cr$\m@th#1#3$\cr}%
}
\makeatother

\begin{document}

$a\win b\wineq c$

$\scriptstyle a\win b\wineq c$

$\scriptscriptstyle a\win b\wineq c$

\end{document}

Mico · Answer 3 · 2020-06-09T13:40:42.267

(edited the solution to permit it to work in \scriptstyle and \scriptscriptstyle situations)

Here's a solution which employs the TeX primitives \hss and \cr and the low-level command \ooalign to superimpose the \ge and \le symbols and which employs a `\mathchoice directive to permit typesetting the symbol in first- and second-order sub/superscript mode.

\documentclass{article}
\newcommand\funkyneq{\mathrel{\mathchoice
    {\ooalign{\hss$\ge$\cr$\le$}}
    {\ooalign{\hss$\ge$\cr$\le$}}
    {\ooalign{\hss$\scriptstyle\ge$\cr$\scriptstyle\le$}}
    {\ooalign{\hss$\scriptscriptstyle\ge$\cr$\scriptscriptstyle\le$}}
}}
\begin{document}
$a\funkyneq b \quad \scriptstyle 
 a\funkyneq b \quad \scriptscriptstyle 
 a\funkyneq b$
\end{document}

@egreg - \win is definitely a more memorable name than \funkyneq.... — Mico, Jun 09 '20 at 14:00

score 1 · Answer 4 · answered Jun 09 '20 at 13:31

\tracinglostchars = 2 % Warn if a glyph is missing from a font
\documentclass{article}
\usepackage{unicode-math}

\pagestyle{empty}

\defaultfontfeatures{Scale=MatchLowercase}
\setmathfont{STIX Two Math}

\newcommand\glej{\mathrel{\underline{\glj}}}

\begin{document}
\[ a \glej b \]
\end{document}

To get just this one symbol from STIX Two Math, use \setmathfont[range=\glj, Scale=MatchLowercase]{STIX Two Math} instead.

If you need to use PDFLaTeX instead, the \glj symbol is in the stix and stix2 packages.

Typing Specific Inequality Symbol

4 Answers4