# Error while using combine package [closed]

I am using LaTeX combine package for combining articles in Mathematics having document class amsart, but very time I had a problem with

\newtheorem{theorem}{\bf Theorem}[section]


Can anyone help me to get out of this.

This is using for Main file:

\documentclass[12pt,colclass=amsart,reqno]{combine}

\usepackage{amsmath,a4,amsfonts,amssymb,enumerate,fleqn,breqn,times}

\usepackage{hyperref}

\usepackage{keyval}

\title{Proceedings of the ...}

\author{ Editor\thanks{Support ...}}

\begin{document}

\pagestyle{combine} % use the combine page style
\maketitle % main title

\tableofcontents % main ToC

\clearpage

\begin{papers}

\begingroup\import{file1}\endgroup % first article, may have own ToC,

\end{papers}

\end{document}


For file1 I am using:

\documentclass[a4paper,11pt,reqno]{amsart}

\usepackage{amsmath,a4,amsfonts,amssymb,amsthm,enumerate,fleqn,breqn}

\usepackage{enumitem}

\setdescription{leftmargin=0cm,labelindent=0cm}

\mathindent4em

\renewcommand{\theequation}{\arabic{section}.\arabic{equation}}

\mathsurround1pt

\def\disp{\displaystyle}

\def\CC{\mathbb{C}}

\def\ZZ{\mathbb{Z}}

\pretolerance=5000

\hyphenpenalty=5000

\def\cc#1{\{#1\}}

\def\pp#1{\|#1\|}

\def\ra{\rangle}

\def\la{\langle}

\def\nh{\mathcal{H}}

\def\A{\mathcal{A}}

\theoremstyle{plain}

\newtheorem{theorem}{\bf Theorem}[section]

\newtheorem{lemma}[theorem]{\bf Lemma}

\theoremstyle{remark}

\newtheorem{definition}[theorem]{\bf Definition}

\newtheorem{observations}[theorem]{\bf Observations}

\newtheorem*{notationn}{\bf Notation}

\newtheorem{example}[theorem]{\bf Example}

\newtheorem{remark}[theorem]{\bf Remark}

\newtheorem{proposition}[theorem]{\bf Proposition}

\newtheorem{corollary}[theorem]{\bf Corollary}

\newtheorem*{noten}{\bf Note}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\title{FILE 1}

\author{C}

\email{acs@gmail.com}

\def\Ker{\mathop{\rm Ker}}

\subjclass[2010]{ xxC40}

\keywords{asc}

\thispagestyle{empty}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}

\maketitle
\begin{abstract}

abs

\end{abstract}

\section{Introduction}

\end{document}


The error shows:

! Undefined control sequence.
l.7 \setdescription
{leftmargin=0cm,labelindent=0cm}
?
! Missing \endcsname inserted.
\relax
l.39 \newtheorem{theorem}{\bf Theorem}[section]

?


## closed as off-topic by Joseph Wright♦Mar 5 '16 at 21:22

• This question does not fall within the scope of TeX, LaTeX or related typesetting systems as defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

• You shouldn't use \bf but "had a problem" means what??? Did you get an error if so what (exactly) was the message, cut the message from the log file and show us. Please always include a small complete document that demonstrates the error. – David Carlisle May 14 '14 at 11:17
• Welcome to TeX.SX! On topic of \bf: tex.stackexchange.com/q/41681 – LaRiFaRi May 14 '14 at 11:41
• You had ommited the important part of the error message that says what the error is, I edited your question to add back both error messages (The benefit of having provided an example that reproduces the error:-) The error is that \setdescription is not defined That isn't a command I recognise – David Carlisle May 14 '14 at 14:46
• I'm voting to close this question as off-topic because it involves some unknown macro that hasn't been detailed in edits. – Joseph Wright Mar 5 '16 at 21:22