What is the font size of the references section in the amsart class?

Question

Does anyone happen to know what the default fontsize of the references section in the amsart class is?

Answer 1

The thebibliography environment of amsart uses the \bibliofont macro which defaults to \footnotesize. Here's the relevant code snippet from amsart.cls:

\newcommand{\bibliofont}{\footnotesize}
\newcommand{\@bibtitlestyle}{%
  \@xp\section\@xp*\@xp{\refname}%
}
\newenvironment{thebibliography}[1]{%
  \@bibtitlestyle
  \normalfont\bibliofont\labelsep .5em\relax
  \renewcommand\theenumiv{\arabic{enumiv}}\let\p@enumiv\@empty
  \list{\@biblabel{\theenumiv}}{\settowidth\labelwidth{\@biblabel{#1}}%
    \leftmargin\labelwidth \advance\leftmargin\labelsep
    \usecounter{enumiv}}%
  \sloppy \clubpenalty\@M \widowpenalty\clubpenalty
  \sfcode`\.=\@m
}{%
  \def\@noitemerr{\@latex@warning{Empty `thebibliography' environment}}%
  \endlist
}