[Tex/LaTex] Partial derivative with rightleftarrow on top of it

symbols

How can I write a partial derivative with an arrow on top of it (pointing to the left and right)? For instance:

enter image description here

I've tried to Google it, but couldn't find anything (probably because I'm not sure what keywords to use). Any help is much appreciated.

Best Answer

One option using \overset:

\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}

\begin{document}

\[
\partial_0\quad \overset{\leftrightarrow}{\partial_0}
\]

\end{document}

enter image description here

Related Solutions

[Tex/LaTex] Typesetting of negative versus minus

My understanding is that a negative sign is the same as a minus sign, but the spacing is different since it's a unary operator rather than a binary operator. You can see this in TeX: $-x$ has different spacing from $y-x$ :

I'm not sure I can answer your question about it being proper, but I'll say that I've never seen mathematics typeset with a raised, smaller negative sign. (But take that with a grain of salt because most, but not all, math I read is typeset with LaTeX.)

[Tex/LaTex] How to build two lines aligned maps

Something like this or variants like aligned if you want it to be part of a larger expression.

enter image description here

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\begin{align*}
A&\rightarrow B\\
a&\mapsto b
\end{align*}

\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Typesetting of negative versus minus

[Tex/LaTex] How to build two lines aligned maps

Related Question