I've been using this wonderful package
http://www.imf.au.dk/system/latex/lokalepakker/dlfltxbcodetips.sty
(http://www.imf.au.dk/system/latex/lokalepakker/dlfltxbcodetips.pdf
info on the package)
The command \ArrowBetweenLines make a small \Updownarrow between the
lines of the equations.
My problem is I can't seem to figure out if there is an easy way to
align the arrow all the way to the left or even right side of the
page.
So does anybody know if there is an easy way to left/right align the
arrows?
Thanks in advance
/Prozac
Nice to see that the package might be useful for someone.
use flalign instead of alignat, though you will need more &'s
\documentclass{memoir}
\usepackage{amsmath,dlfltxbcodetips}
\begin{document}
\begin{flalign*}
&& A &=b && \\
\ArrowBetweenLines
&& &= 0 &&
\end{flalign*}
\end{document}
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