
\documentclass{igtc2018}

\citesort
\theoremstyle{cupthm}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{definitions}[theorem]{Definitions}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
\newtheorem{remark}[theorem]{Remark}
\newtheorem{question}{Question}
\newtheorem{Theorem}{Theorem}

\newcommand{\supp}{\hbox{supp}}

\begin{document}
\runningtitle{Short title of the paper for running head}
\title{Full title of the paper}

% Insert \speaker command immediately prior to the author who is actually the speaker.
\speaker
\author[1]{A. Author}
\address[1]{  Faculty of ..., University of..., \\
\email{A. Author@....}}
\author[2]{B. Author}
\address[2]{ Faculty of ..., University of...,   \\
\email{B. Author@.... }}
\author[3]{C. Author}
\address[3]{ Faculty of ..., University of...,  \\
\email{C. Author@...}}
\authorheadline{A. Author, B. Author and C. Author}


\begin{abstract}

Please write here the abstract of your paper. It should be less than 150 words.

\end{abstract}

\keywords{ At most 5 words or phrases. }
\classification{Primary: 22D15, 43A10; Secondary: 43A20, 46H25}



\maketitle

\section{Introduction}
The    article should contain at least 3 and at most 5 pages. Here you should bring the preliminaries, terminologies,
 historical background, definitions and some of the known results.

For the invited speakers there is no limit for the number of pages.




\section{Main Results}

Here you should present some preliminaries and then bring your main results, but it is not necessary to present the proofs. However, you may briefly present some parts of the proofs. You can divide this section into some subsections, if necessary.

\begin{definition} Suppose that
\end{definition}

\begin{theorem} Let $G$ be finite group....
\end{theorem}

\begin{lemma} If $G$ is finite nilpotent group ...
\end{lemma}
\begin{proof}
First we may ...
\end{proof} 

\begin{corollary} Let $G$ be...
\end{corollary}



\ack{ If you wish to  }
\\
\\

\noindent In the following, references should appear alphabetically, by the family names of the first authors. 
The number of main references should not be more than 7.

\begin{thebibliography}{99}

\bibitem{AB} {\sc F. Author,  S. Author and T. Author},
Paper title, {\it Journal title} {\bf volume number} (year)
xxx-xxx.

\bibitem{CD} {\sc F. Author and S. Author},
Book Title,  Press Name, City Name, publication year.

\end{thebibliography}
\end{document}
