error when using \tableofcontents

Question

\documentclass[12pt,reqno,a4paper]{amsart}
\usepackage{extsizes}
\usepackage{blindtext}
\textheight 9.3in \textwidth 6.5in
\calclayout
\usepackage{mathtools}
\usepackage{amsmath,amsthm,amsfonts,amssymb}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{corollary}{Corollary}[section]
\usepackage{hyperref}
\usepackage{mathrsfs}
\usepackage[all]{xy}
\usepackage[normalem]{ulem}
\newtheorem{lemma}{Lemma}[subsection]
\newtheorem*{question}{Question}
\theoremstyle{definition}
\newcommand{\mc}{\mathcal}
\newcommand{\mf}{\mathfrak}
\newtheorem*{solution}{Solution}
\newtheorem{definition}{Definition}[section]
\newtheorem{remark}{Remark}[section]
\newtheorem{proposition}{Proposition}[section]
\newtheorem{exercise}{Exercise} 
\newtheorem{example}{Example}[section]
\usepackage{tikz-cd}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{datetime}
% \renewcommand{\baselinestretch}{2} 
\usepackage{color}
\pagestyle{myheadings}
\newcommand{\xra}{\xrightarrow}
\newcommand{\ra}{\rightarrow}
\title{A}
\author{B} 

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

\end{abstract} 

\maketitle 
\tableofcontents 
\section{asdsd}
\subsection{A $p\colon \underline{X}\ra \mc{D}$B} 

\end{document}

When I do not run \tableofcontents, I see no problem. If I run \tableofcontents, I see

line 3: Missing $ inserted. ...htarrow \mathcal {D}$B}}{2}{subsection.1.1}
line 3: Missing $ inserted. ...htarrow \mathcal {D}$B}}{2}{subsection.1.1}
: It is better to use one of the extsizes classes, if you can.
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `math shift'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\mskip'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\mathpunct'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\nonscript'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\mkern'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\thinmuskip'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\mskip'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `math shift'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\@@underline'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\hbox'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\mathsurround'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\z@'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `math shift'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `\rightarrow'
line 48: Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing `math shift'
: Label(s) may have changed. Rerun to get cross-references right.

In above, first two came as errors in red font. It is mentioned as file document.toc Third is as a warning. It is mentioned as file extsizes.sty

Everything else came as warnings in the file document.tex

How is the full title of the first subsection that causes this problem? — , Apr 28 '19 at 17:48
Probably unrelated, but hyperref should (in most cases) be loaded last. Apart from that, Equations in section heading/title might be interesting. — leandriis, Apr 28 '19 at 18:05
Thanks for adding the title. It works fine for me. Can you try to remove all auxiliary files and compile again? If this does not work, can you make a demo document, that replicates the error? — , Apr 28 '19 at 18:15

score 1 · Accepted Answer · answered Apr 29 '19 at 22:43

The error is caused by using \underline in the subsection title, it can be solved by adding \protect in front of it. In addition all the warnings about Token not allowed in a PDF string can be avoided by providing an alternative text for the bookmarks:

\documentclass[12pt,reqno,a4paper]{amsart}
\usepackage{extsizes}
\usepackage{blindtext}
\textheight 9.3in \textwidth 6.5in
\calclayout
\usepackage{mathtools}
\usepackage{amsmath,amsthm,amsfonts,amssymb}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{corollary}{Corollary}[section]
\usepackage{hyperref}
\usepackage{mathrsfs}
\usepackage[all]{xy}
\usepackage[normalem]{ulem}
\newtheorem{lemma}{Lemma}[subsection]
\newtheorem*{question}{Question}
\theoremstyle{definition}
\newcommand{\mc}{\mathcal}
\newcommand{\mf}{\mathfrak}
\newtheorem*{solution}{Solution}
\newtheorem{definition}{Definition}[section]
\newtheorem{remark}{Remark}[section]
\newtheorem{proposition}{Proposition}[section]
\newtheorem{exercise}{Exercise} 
\newtheorem{example}{Example}[section]
\usepackage{tikz-cd}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{datetime}
% \renewcommand{\baselinestretch}{2} 
\usepackage{color}
\pagestyle{myheadings}
\newcommand{\xra}{\xrightarrow}
\newcommand{\ra}{\rightarrow}
\title{A}
\author{B} 

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

\end{abstract} 

\maketitle 
\tableofcontents 
\section{asdsd}
\subsection{A \texorpdfstring{$p\colon \protect\underline{X} \ra \mc{D} $}{alternative text for bookmarks}B} 

\end{document}

@PraphullaKoushik Bookmarks are the what your pdfviewers shows at the left besides the actual document where you can navigate between the different sections. This stuff: https://helpx.adobe.com/acrobat/using/page-thumbnails-bookmarks-pdfs/_jcr_content/main-pars/image_1.img.png/ed03.png — , Apr 30 '19 at 12:21

error when using \tableofcontents

1 Answers1