EDIT 2: My question was indeed a duplicate or otherwise clouded in some of my own misunderstanding. Apologies for the inconvenience.
EDIT: This question was closed as a duplicate, but the thread linked does not solve my problem. My issue is that I cannot put any sort of \thanks, \footnote, or even \footnotemark inside of the second argument of \author. Also, I am not adding a URL. I am adding text.
I am struggling to add a \thanks to the second author (which should go at the bottom of the first page). In the following, the only thing that's missing is (a) a number/symbol for the second author, and (b) a number/symbol for the footer that \thanks creates. Putting thanks inside the second author full name threw an error. I also tried \footnote, but didn't manage to make it work.
\documentclass[a4paper,11pt]{amsart}
\usepackage{amsmath,amssymb,amsthm, amsfonts,color}
\begin{document}
\title{A paper}
\author[F. Author]{First Author}
\author[S. Author]{Second Author}\thanks{for all the fish}
\address{the department\\
a place}
\email[F. Author]{fauthor@theschool.edu}
\email[S. Author]{sauthor@theschool.edu}
\maketitle
\begin{abstract}
the abstract
\end{abstract}
\section{intro}
lots of good stuff
\end{document}
Hopefully this is easy to solve. Thanks in advance!



amsarttreats\thanksas an unnumbered footnote. This is a design decision. To identify the specific author, enter it as\thanks{The second author says, thanks for all the fish.}– barbara beeton May 17 '19 at 00:43\thankswithin the second argument of\author. The problem seems to be that I literally cannot put any kind of\thanks,\footnote, or\footnotemarkinside the second argument of\author. – sigma-finite May 20 '19 at 18:18\thankscannot be nested within an argument of\author; it must be a separate element at the same level as\author, and withamsart, it will be carried with (and internally numbered the same as) the\authorelement it follows. All the same, it's best to include text identifying which author is involved, as\thanks{The second author ...). (And, apology accepted. Although this isn't rocket science, it can be confusing if you're looking at it for the first time.) – barbara beeton May 21 '19 at 01:23