In amsart, how do you include two dates (in the footnotes)?
Specifically, another one (displayed after the label Last update) in addition to the default one (\date), with the same options.
\documentclass[10pt]{amsart}
\usepackage[foot]{amsaddr}
\begin{document}
\title[Short Title]{Long Title}
\author[Surname]{Name Surname}
\address{University}
\email{email@email.com}
\date{14/09/2015}
\maketitle
\end{document}

\date{September 14, 2015; \textit{Last updated}:~\today}. This needs no further patching of your class and the packageamsaddr– LaRiFaRi Sep 14 '15 at 09:28