\documentclass[12pt]{book}
\title{A sample paper that we are writing in the class}
\author{Ali Ahmadi, Jafar Mohammadi}
%\date{10 Sep. 2019}
\usepackage{hyperref}
\usepackage{graphicx}
\graphicspath{{Fig/}}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{conj}[theorem]{Conjecture}
\newtheorem{rem}{Remark}[section]
\def\mycom{My command}
\newcommand\second[1]{My second one #1}
\newcommand\conjref[1]{Conjecture~\ref{#1}}
\renewcommand\frac[2]{#1 , #2}
\begin{document}
\maketitle 
\tableofcontents
\listoffigures
\listoftables
\chapter{Chapter Title}
%\begin{abstract}
This is abstract of our paper. To make it more enough, we copy a text from below.

This          is a test. 
Warning: 	there are PC members who have never accessed the ICCG 2020 Web pages (see the table below). It is possible that emails sent by EasyChair never reached these PC members. There are two possible reasons for this. 
%\end{abstract}

\section{Another section}
To view more information about a {\bf PC member}, edit this information or delete the {\it PC member}, click , , or .
This is a test. Warning: {\tiny there} are {\small PC members} who have {\footnotesize never accessed} the ICCG 2020 {\large Web pages} (see {\Large the table} {\LARGE below}). It is {\huge possible} that {\Huge emails} sent by  EasyChair never reached these PC members. There are two possible reasons for this. First, the email address may be incorrect. Second, there might be an email delivery problem: mail servers are trying to fight spam mail and so are becoming increasingly hostile and unreliable. We recommend you to check the email addresses of these PC members using the 'Email addresses' menu item in the upper right corner and, if they are correct, try to contact these PC members directly to check if they received any email. You can click on the question mark in the table to obtain more information about a PC member.
Below you will find the table of all PC members ordered by the time of their last access to the PC Web page. All times are GMT. There are 21 PC members


To view more information about a PC member, edit this information or delete the PC member, click , , or .
This is a test. Warning: there are PC members who have never accessed the ICCG 2020 Web pages (see the table below). It is possible that emails sent by EasyChair never reached these PC members. There are two possible reasons for this. First, the email address may be incorrect. Second, there might be an email delivery problem: mail servers are trying to fight spam mail and so are becoming increasingly hostile and unreliable. We recommend you to check the email addresses of these PC members using the 'Email addresses' menu item in the upper right corner and, if they are correct, try to contact these PC members directly to check if they received any email. You can click on the question mark in the table to obtain more information about a PC member.
Below you will find the table of all PC members ordered by the time of their last access to the PC Web page. All times are GMT. There are 21 PC members

To view more information about a PC member, edit this information or delete the PC member, click , , or .

\section*{Pishgoftar}
Warning: 	there are PC members who have never accessed the ICCG 2020 Web pages (see the table below). It is possible that emails sent by EasyChair never reached these PC members. There are two possible reasons for this. 

\section{Introduction}
This          is a test. 
Warning: 	there are PC members who have never accessed the ICCG 2020 Web pages\footnote{The website is http://iccg.com.} (see the table below). It is possible that emails sent by EasyChair never reached these PC members. There are two possible reasons for this. 






\section{Second one}
First, the email address may be incorrect. Second, there might be an email delivery problem: mail servers are trying to fight spam mail and so are becoming\footnote{Second one} increasingly hostile and unreliable.\\ We recommend you to check the email addresses of these PC members using the 'Email addresses' menu item in the upper right corner and, if they are correct, try to contact these PC members directly to check if they received any email. 
\subsection{A Subsection}\label{sec:AA}
You can click on the question mark in the table to obtain more information about a PC member.
Below you will find the table of all PC members ordered by the time of their last access to the PC Web page. All times are GMT. There are 21 PC members
 \subsubsection{A sub sub section}
To view more information about a PC member, edit this information or delete the PC member, click , , or .

To log in as another PC member\footnote{This is another footnote.} (that is, see the view of the PC member and/or make actions on her or his behalf), click .
This is a test. Warning: there are PC members who have never accessed the ICCG 2020 Web pages (see the table below). \newline It is possible that emails sent by EasyChair never reached these \linebreak  PC members. There are two possible reasons for this. First, the email address may be incorrect. Second, there might be an email delivery problem: mail servers are trying to fight spam mail and so are becoming increasingly hostile and unreliable. We recommend you to check the email addresses of these PC members using the 'Email addresses' menu item in the upper right corner and, if they are correct, try to contact these PC members directly to check if they received any email. You can click on the question mark in the table to obtain more information about a PC member.
Below you will find the table of all PC members ordered by the time of their last access to the PC Web page. All times are GMT. There are 21 PC members

\section{itemize }
This is itemize.
\begin{itemize}
\item [a)]Item One
\item [b)]Item 2
\item [c)]This is a test for itemize item text to be a little long to see what happens.
\end{itemize}
This is a test after itemize. As  dfhk dkfjkd kdfjd ldkfl ldkfd this is that we~saw in subsection~\ref{sec:AA}, we know that at the page \pageref{sec:AA} we sss ....

\begin{itemize}
\item Item One
\item Item 2
\item This is a test for itemize item text to be a little long to see what happens.
\end{itemize}
\section{enumerate}
\begin{enumerate}
\item Item One
\item Item 2
\item This is a test for itemize item text to be a little long to see what happens.
\end{enumerate}
By equation~\ref{eq:1} we have ....
\section{Notepadd++ Commands}
\begin{verbatim}
NPP_SAVE
cd $(CURRENT_DIRECTORY)
pdflatex -synctex=-1 --shell-escape $(FILE_NAME)

\begin{enumerate}
\item Item One
\item Item 2
\item This is a test for itemize item text to be a little long to see what happens.
\end{enumerate}
\end{verbatim}
\chapter{Mathematics Formula}
\section{Introduction}
The function $$y=\left(\frac{\int_{11}^{\infty}2x dx}{\frac{\sum_{i=1}^\infty}{\sqrt{\frac{1}{2}x^{x^{21}}+z_{i,j}^{2x+1}}}}\right)$$ we have 

$$
\frac{\sin^2 \alpha+\cos^2 \beta}{\sqrt{2\sin \alpha \cos \alpha}\times \frac{x}{y}}
$$
%\begin{equation}
$$y=\left(\int_{11}^{\infty}\frac{2x dx}{\frac{\sum_{i=1}^\infty}{\sqrt{\frac{1}{2}x^{x^{21}}+z_{i,j}^{2x+1}}}}\right)
$$%\end{equation}


\begin{equation}\label{eq:1}
\frac{\sin^2 \alpha+\cos^2 \beta}{\sqrt{2\sin \alpha \cos \alpha}\times \frac{x}{y}}
\end{equation}
\newpage  %\pagebreak
\begin{eqnarray}
\frac{x^2+y^2}{2xy\sin x} &\leq& 4xy+2\sin x\cos y\\
\frac{x}{y} &\leq& x^2+y^2 \label{test}\\
&\geq& 2x-1\nonumber\\
&\not\subset& 5.
\end{eqnarray}

\begin{eqnarray*}
\frac{x^2+y^2}{2xy\sin x} &\leq& 4xy+2\sin x\cos y\\
\frac{x}{y} &\leq& x^2+y^2\\
&\geq& 2x-1\\
&\not\subset& 5.
\end{eqnarray*}

by~\ref{test} there is ...

Based on the Conjecture~\ref{BBB} we have bla bla bla. \conjref{BBB}
\section{Array}
$$\left[\begin{array}{cclr}
25&42&x^3&\frac{x}{y}\\
x^2+y^2&  & \sin\alpha&  \\
 & \frac{x^2+y^2}{2xy} 
\end{array}
\right]
$$


$$\begin{array}{|c||cl|r|}
\hline
25&42&x^3&\frac{x}{y} \\ \hline
x^2+y^2&  & \sin\alpha&  \\
 & \frac{x^2+y^2}{2xy} & &\\
 \hline
\end{array}
$$
\newpage
$$
\begin{array}{|c|c|c|c|c|c|c|c|c|}
\hline
\multicolumn{3}{|c|}{\mbox{Uniform}} & \multicolumn{3}{|c|}{\mbox{Delta}} & \multicolumn{3}{|c|}{\mbox{Gamma and Delta}} \\   \hline
Max&Min&Ave &Max&Min&Ave&Max&Min&Ave\\ \hline
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\ \hline
\end{array}
$$

\begin{tabular}{|c|c|c|c|c|c|c|c|c|}
\hline
\multicolumn{3}{|c|}{\mbox{Uniform}} & \multicolumn{3}{|c|}{\mbox{Delta}} & \multicolumn{3}{|c|}{\mbox{Gamma and Delta}} \\   \hline
Max&Min&Ave &Max&Min&Ave&Max&Min&Ave\\ \hline
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\ \hline
\end{tabular}

\chapter{Theorem-Like Environment}
\section{Introduction}
I want to have a theorem.
\begin{theorem}
If $G$ is planar then it is planar.
\end{theorem}

\begin{theorem}
This is second one.
\end{theorem}

\section{New Section}

\begin{lemma}
This is a lemma that we added after 2 theorems. So its number have to be something.
\end{lemma}

\begin{conj}[Lu, 2000]\label{BBB}
This is a conjecture. \mycom
\end{conj}

As you can see in Figure~\ref{Fig:1}, we see that bla bla
\begin{rem}
This is a remark. \second{Parameter}
\end{rem}
\chapter{Adding Figures and Tables}
\newpage
\section{adding Figures}

\begin{lemma}
This is a lemma that we added after 2 theorems. So its number have to be something.
\end{lemma}

\begin{figure}[bt]
\begin{center}
\includegraphics[width=5cm, height=3cm,angle=26]{images}\hfill
\includegraphics[width=0.5\textwidth]{Masjed-e_Jomeh_Yazd}
\end{center}
\caption{This is caption of the figure.}\label{Fig:1}
\end{figure}

\begin{conj}[Lu, 2000]\label{BBB}
This is a conjecture. \mycom
\end{conj}

\begin{lemma}
This is a lemma that we added after 2 theorems. So its number have to be something.
\end{lemma}

\begin{conj}[Lu, 2000]\label{BBB}
This is a conjecture. \mycom
\end{conj}

\begin{figure}[bt]
\begin{center}
\includegraphics[width=0.9\textwidth]{fig22}
\end{center}
\caption{This is caption of the figure******.}\label{Fig:2}
\end{figure}


\begin{table}[bt]
\begin{center}
\begin{tabular}{|c|c|c|c|c|c|c|c|c|}
\hline
\multicolumn{3}{|c|}{\mbox{Uniform}} & \multicolumn{3}{|c|}{\mbox{Delta}} & \multicolumn{3}{|c|}{\mbox{Gamma and Delta}} \\   \hline
Max&Min&Ave &Max&Min&Ave&Max&Min&Ave\\ \hline
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\
1&2&3&4&5&6&7&8&9\\ \hline
\end{tabular}

\end{center}
\caption{This is caption of the figure******.}\label{Fig:2}
\end{table}

\end{document} 
