Disable/toggle smallcaps in the title

Question

I am using the amsart document class. I want to to change the text in the titles (such as in \author) to be written normally and not in small caps.

• How can I change this globally? That is, so that the text in all titles (\title, \author, \section, and so on) is written without small caps.
• How can I change this locally? That is, only change it in one place. If, for example, I include my email address in the \author field, I don't want it to be written in small caps. Wrapping the text inside \textnormal or \textrm does not work. Wrapping it inside \lowercase works, but I don't consider it a good solution.

Answer 1

While amsart uses smallcaps for section headings, it actually uses (full) capitals for \author and \title. Note that a title argument given in upper- and lowercase will produce capitals which are all of the same height.

The following MWE redefines the formatting in a way that only affects \author, \title and \section:

\documentclass{amsart}

\usepackage{etoolbox}

\makeatletter
\patchcmd{\@settitle}{\uppercasenonmath\@title}{}{}{}
\patchcmd{\@setauthors}{\MakeUppercase}{}{}{}
\patchcmd{\section}{\scshape}{}{}{}
\makeatother

\begin{document}

\author{Author, A.}
\title{And now for something completely different}
\maketitle

\section{A section}

Some text.

\end{document}

Answer 2

I don't understand why you'd use amsart if you want to customize the style. Using amsart is basically just a way of telling it you want to use AMS style. It doesn't make sense to me to do that, but then deviate so significantly from its style. If it were me, I'd use the regular article class along with the amsmath package for the power of the AMS classes without the style, which will free you up to use, e.g., packages like titling, fancyhdr and titlesec for customizing the title, headers/footers and section headings.

Sure you can redefine some of the class's internals (lockstep tells you how), but it seems like a funny way of proceeding to me.