symbols
I'm using the amsbook document class with the psamsfonts and mathpazo packages. The minus sign touches the bottom of the text line. Is there a way to slightly miniaturize and vertically center the \pm symbol with the number?
\documentclass[psamsfonts]{amsbook}
\usepackage{mathpazo}
\begin{document}
$\pm 1$
\end{document}
I once proposed the following definitions
\newcommand\varpm{\mathbin{\vcenter{\hbox{%
\oalign{\hfil$\scriptstyle+$\hfil\cr
\noalign{\kern-.3ex}
$\scriptscriptstyle({-})$\cr}%
}}}}
\newcommand\varmp{\mathbin{\vcenter{\hbox{%
\oalign{$\scriptstyle({+})$\cr
\noalign{\kern-.3ex}
\hfil$\scriptscriptstyle-$\hfil\cr}%
}}}}
Example
\documentclass{article}
\newcommand\varpm{\mathbin{\vcenter{\hbox{%
\oalign{\hfil$\scriptstyle+$\hfil\cr
\noalign{\kern-.3ex}
$\scriptscriptstyle({-})$\cr}%
}}}}
\newcommand\varmp{\mathbin{\vcenter{\hbox{%
\oalign{$\scriptstyle({+})$\cr
\noalign{\kern-.3ex}
\hfil$\scriptscriptstyle-$\hfil\cr}%
}}}}
\begin{document}
$a\varpm b\varmp c$
\end{document}
Do you mean something like
\documentclass{article}
\usepackage{amsmath}
\begin{document}
$1.23\substack{+0.4 \\ -0.5}$\,pb
\end{document}
(I've been asked about this for siunitx, but have never really worked out what it actually means or a good interface for an 'automated' approach.)
Best Answer
For simple uses
should do. If you need a very accurate measuring
If you need the symbol also in subscripts or superscripts, something else is needed.
The
psamsfontsoption is obsolete, as far as I remember.