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I am currently using the mathabx package, which redefines a lot of the standard symbols. I actually like most of the differences with the exception of the partial derivative symbol. Would it be possible to redefine the partial derivative command so that when I type \partial, we get the standard partial derivative symbol?

Below are the partial derivative symbols (mathabx on the left, standard one on the right).

enter image description here

2 Answers 2

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Save a copy before loading mathabx.

\documentclass{article}
\let\origpartial\partial
\usepackage{mathabx}
\begin{document}
$\origpartial\quad\partial$
\end{document}

enter image description here

3

You can look into fontmath.ltx to see the original definition; with Bash it could be

less $(kpsewhich fontmath.ltx)

You'll find \partial on line 222. Copy the declaration into your document.

\documentclass{article}
\usepackage{mathabx}

\DeclareMathSymbol{\partial}{\mathord}{letters}{"40} % fontmath.ltx, line 222

\begin{document}

$\partial f$

\end{document}

enter image description here

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