# author not appearing in \maketitle in amsart

I am new to the amsart document class. For some reasons \author (etc..) is not showing after I use \maketitle. This is my tex:

\documentclass[12pt,reqno,a4paper]{amsart}

\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsfonts}
\usepackage{mathrsfs}
\usepackage{amsthm}
\usepackage{latexsym}
\usepackage{pictexwd}
\usepackage{pdftricks}
\usepackage{natbib}
\usepackage{setspace}
\usepackage{color}
\usepackage[affil-it]{authblk}

\begin{document}

\title{Temptation, Asymmetric information and Committment}

\author{Mark}

\affil{University of Leicester}

\date{February 2014}

\maketitle

\begin{abstract}
To be written
\end{abstract}

\section{introduction}

...

\end{document}


and this is the output:

can anybody help me out?

• Ok, I have used package \usepackage{titling} and at least I get everything but I am sure there has to be some other way...
– Matt
Jan 24, 2014 at 14:54
• Your MWE is overly complicated many irrelevant packages. Doesn't amsart have its own system for authors and their affils? Jan 24, 2014 at 14:58
• I Apologise (this is actually the first time Ihear about minimal working examples) I will do better next time.
– Matt
Jan 24, 2014 at 15:40

the way author information is handled by amsart is quite different from how it is handled by article, and the authblk package is based on the article conventions. this difference is what is causing the author information to be omitted.

if you really need the authors presented as they are in article (modified by authblk), then amsart is not going to work for you.

if you are willing to accept the amsart presentation, then you will also need to change \affil to \address or \curraddr. also, the facilities of amsthm are built into amsart, and amsmath and amsfonts are automatically loaded, so it's not necessary to specify those three packages with \usepackage.

• Hello. Yes I know about amsmath and the others. Honestly I keep them there not to forget them for when I use the article document class. Can this create any conflict? As for the author issue. I am not sure I need the same output of article. I wondered if there is a way, any way, to have the authors presented in amsart as well. Not necessarily as in article (actually I do not like the article class that's why I am trying to move to amsart...)
– Matt
Jan 24, 2014 at 15:37
• the ams document classes protect against "double loading" of these packages. however, if you want to apply some option to one of the packages, it will be ignored if added with \usepackage. Jan 24, 2014 at 15:39
• regarding author information, changing this to the style used for article would only be possible by completely redefining how the information is handled on input. that would be a major modification to the internal code of amsart.cls. there is one journal based on amsart with a more article-like topmatter block: the quarterly of applied mathematics; get the author package here. it should be easier to modify that than to start from amsart.cls itself. (please remove any ams support info if you do so.) Jan 24, 2014 at 15:53
• I see. Thank you I will look into the package and correct this as soon as I can.
– Matt
Jan 24, 2014 at 16:11