While
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
& A \\
& = B
\end{align}
\end{document}
preserves the horizontal space after the equals sign,
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
& A \\
= & B
\end{align}
\end{document}
gobbles this. Is there a way to preserve the space?
(OK, in the MWE alignment could be placed behind A and B, but it is just a minimal example.)
If it is not: How wide is the space (as to use \hspace{ something }
)?
&
should be before the=
in AMS alignments)