How to use \chapter in "\documentclass[12pt,reqno,a4paper]{amsart}"

Question

\documentclass[12pt,reqno,a4paper]{amsart}
%\usepackage[utf8]{inputenc} % not needed with up-to-date TeX systems
\usepackage[english]{babel}

\usepackage{amsmath,amsthm,amsfonts,amssymb}
\usepackage{mathtools}
\usepackage{color}

\usepackage{mathrsfs}
\usepackage[all]{xy}
\usepackage{tikz-cd}
\usepackage[normalem]{ulem} % do you *really* need it?
\usepackage{datetime}

\usepackage{hyperref}

\theoremstyle{definition}

\newtheorem{theorem}{Theorem}[section]
\newtheorem{construction}{Construction}
[section]
\newtheorem{observation}{Observation}
\newtheorem{corollary}{Corollary}[section]
\newtheorem{lemma}{Lemma}[section]
\newtheorem{definition}{Definition}[section]
\newtheorem{remark}{Remark}[section]
\newtheorem{proposition}{Proposition}[subsection]
\renewcommand{\qedsymbol}{$\blacksquare$}
\newtheorem{example}{Example}
\newtheorem*{question}{Question}
\newtheorem*{solution}{Solution}
\newtheorem{exercise}{Exercise} 

\newcommand{\mc}{\mathcal}
\newcommand{\mf}{\mathfrak}
\newcommand{\mb}{\mathbb}
\newcommand{\xra}{\xrightarrow}
\newcommand{\ra}{\rightarrow}
\newcommand{\rra}{\rightrightarrows}
\pagestyle{myheadings}

\textheight 9.3in 
\textwidth 6.5in
\calclayout

% metadata

%\date{\today}


\title{something}
\author{someone} 
\address{somewhere}


\begin{document}
    %\today
\begin{abstract}

\end{abstract}
\maketitle

\end{document}

I want to use \chapter in above document class. It is showing error saying "undefined control sequence".

I tried using report document class. On \usepackage[english]{babel} it is saying "TeX capacity exceeded, sorry [parameter stack size=10000]. \usepackage[english]". How can I change above document class so that I can use \chapter, \section and all that? Did I add \usepakage that does not work in some documentclasses?

Answer 1

amsart is one of a template which supports Journal style, Please use amsbook instead of that, you can get the output:

\documentclass[12pt,reqno,a4paper]{amsbook}
%\usepackage[utf8]{inputenc} % not needed with up-to-date TeX systems
\usepackage[english]{babel}

\usepackage{amsmath,amsthm,amsfonts,amssymb}
\usepackage{mathtools}
\usepackage{color}

\usepackage{mathrsfs}
\usepackage[all]{xy}
\usepackage{tikz-cd}
\usepackage[normalem]{ulem} % do you *really* need it?
\usepackage{datetime}

\usepackage{hyperref}

\theoremstyle{definition}

\newtheorem{theorem}{Theorem}[section]
\newtheorem{construction}{Construction}
[section]
\newtheorem{observation}{Observation}
\newtheorem{corollary}{Corollary}[section]
\newtheorem{lemma}{Lemma}[section]
\newtheorem{definition}{Definition}[section]
\newtheorem{remark}{Remark}[section]
\newtheorem{proposition}{Proposition}[subsection]
\renewcommand{\qedsymbol}{$\blacksquare$}
\newtheorem{example}{Example}
\newtheorem*{question}{Question}
\newtheorem*{solution}{Solution}
\newtheorem{exercise}{Exercise} 

\newcommand{\mc}{\mathcal}
\newcommand{\mf}{\mathfrak}
\newcommand{\mb}{\mathbb}
\newcommand{\xra}{\xrightarrow}
\newcommand{\ra}{\rightarrow}
\newcommand{\rra}{\rightrightarrows}
\pagestyle{myheadings}

\textheight 9.3in 
\textwidth 6.5in
\calclayout

% metadata

%\date{\today}


\title{something}
\author{someone} 
\address{somewhere}


\begin{document}
    %\today
\begin{abstract}

\end{abstract}
\maketitle

\chapter{Test}

\end{document}