I would like to produce a new equal symbol looking like this.
.
What is the best way to do that ? Pure TeX ? TiKz ?
I'm looking for ways to do that rather than to a ready to use solution such as to be able to other new symbols alone.
3 Answers
Before somebody suggests MnSymbol…
\documentclass{article}
\usepackage{amsmath}
\makeatletter
\providecommand{\hateq}{\mathrel{\mathpalette\my@hat@eq\relax}}
\newcommand{\my@hat@eq}[2]{%
\begingroup
\sbox\z@{$\m@th#1=$}%
\ooalign{%
\hidewidth\raisebox{-0.3\ht\z@}{$\m@th#1\widehat{}$}\hidewidth\cr
\box\z@\cr
}%
\endgroup
}
\makeatother
\begin{document}
$A\cong B\hateq C$
\end{document}
With \hat instead of \widehat:
\documentclass{article}
\usepackage{amsmath}
\makeatletter
\providecommand{\hateq}{\mathrel{\mathpalette\my@hat@eq\relax}}
\newcommand{\my@hat@eq}[2]{%
\begingroup
\sbox\z@{$\m@th#1=$}%
\ooalign{%
\hidewidth\raisebox{-0.2\ht\z@}{$\m@th#1\hat{}$}\hidewidth\cr
\box\z@\cr
}%
\endgroup
}
\makeatother
\begin{document}
$A\cong B\hateq C$
\end{document}
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How is this different from U+2259, estimates (
\wedgeqin thestixfonts)? (I know the shape is slightly different, but what about the meaning?) Sep 27, 2019 at 18:24 -
@barbarabeeton It's the same, I guess. No idea what meaning the OP is assigning to the symbol.– egregSep 27, 2019 at 20:29
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1@projetmbc -- I don't know of any equivalent of detexify for Unicode, but it might be reasonable to make a suggestion to the detexify developer to add Unicode IDs to the returned information. It doesn't look like the stix font info has gotten into detexify, so that's also a plausible request. (The stix font and the addition of many symbols to unicode progressed in tandem.) Sep 28, 2019 at 14:19
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1
What you want could be obtained using
\documentclass[12pt]{article}
\usepackage{amsmath}
\newcommand{\circumeq}{\mathrel{\widehat{=}}}
\begin{document}
\begin{equation*}
a \circumeq b
\end{equation*}
\end{document}
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Thanks but how to do that "all by hand" if I want to do other new symbols using existing symbols and possibly simple polylines. Sep 27, 2019 at 14:39
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1@projetmbc: An example of how to make symbols in TixZ is at How can I get a big cross to denote a generalized cartesian product?. Sep 27, 2019 at 14:43
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1@projetmbc OK. I suggest then having a look at (tex.stackexchange.com/questions/22371/…) with a fine course on
\ooalign– DenisSep 27, 2019 at 14:47 -
1Another possibility is playing with the
\stackinsetcommand from ` stackengine` (see § 2.3.10 in the documentation).– BernardSep 27, 2019 at 18:09
The ≙ symbol is U+2259 in Unicode. It has the name \wedgeq in several newer packages, including unicode-math and stix. It is \hateq in two older ones, mnsymbol and fdsymbol. One completely obsolete one, boisik, has \corresponds.
Edit: Sorry, just noticed that Barbara Beeton said that in a comment first. Props!
\wedgeqin the stix fonts). What is your intended meaning? (If it's the same. I'll try to add an answer, but since I don't have easy access to a tex system at the moment, including a visual will be difficult.)