[Tex/LaTex] amsart and titlesec – title font won’t change

amsartformattingsectioningtitlesec

Ok, I am very new to LaTeX. I am using a default template. I have been trying to figure out how to change the font sizes and other formatting. Reading forums convinced me to try titlesec. All titlesec formatting is added to the template (which I don't really understand). The section headings will change size – but not the title. It stays at 12pt. And why is it in all caps? I think it has something to do with amsart, but I could really use some help. My setup looks like this:

\documentclass[12pt]{amsart}
\usepackage{geometry}                % See geometry.pdf to learn the layout options. 
\geometry{letterpaper}                   % ... or a4paper or a5paper or ... 
%\geometry{landscape}                % Activate for for rotated page geometry
%\usepackage[parfill]{parskip}    % Activate to begin paragraphs with an empty line rather than an indent
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage{epstopdf}
\usepackage{titlesec}

\newcommand*{\justifyheading}{\raggedright}
\titleformat {\title}
  {\normalfont \HUGE \bfseries \justifyheading}{\thesection}{1em}{}
\titleformat {\section}
  {\normalfont \large \bfseries \justifyheading}{\thesection}{1em}{}
\titleformat {\subsection}
  {\normalfont \large \bfseries \justifyheading}{\thesubsection}{1em}{}

\DeclareGraphicsRule{.tif}{png}{.png}{`convert #1 `dirname #1`/`basename #1 .tif`.png}

\title{Recall Some Preliminaries}
\begin{document}
\maketitle
\section*{Tensor Calculus}
%\subsection{}

whatever

\end{document}

The section headings will change size – but not the title. It stays at 12pt.

Best Answer

\title cannot be modified using titlesec package. I think that easiest solution is to make title by yourself, using the center environment:

\documentclass[12pt]{amsart}
\usepackage{geometry}                % See geometry.pdf to learn the layout options. 
\geometry{letterpaper}                   % ... or a4paper or a5paper or ... 
%\geometry{landscape}                % Activate for for rotated page geometry
%\usepackage[parfill]{parskip}    % Activate to begin paragraphs with an empty line rather than an indent
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage{epstopdf}
\usepackage{titlesec}

\newcommand*{\justifyheading}{\raggedright}
\titleformat {\section}
  {\normalfont \large \bfseries \justifyheading}{\thesection}{1em}{}
\titleformat {\subsection}
  {\normalfont \large \bfseries \justifyheading}{\thesubsection}{1em}{}

\DeclareGraphicsRule{.tif}{png}{.png}{`convert #1 `dirname #1`/`basename #1 .tif`.png}

\title{Recall Some Preliminaries}
\begin{document}

\vspace*{3ex minus 1ex}
\begin{center}
\Large\bfseries\MakeUppercase{\shorttitle}
\end{center}
\vskip 5ex minus 1ex

\section*{Tensor Calculus}
%\subsection{}

whatever

\end{document}
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