\documentclass[12pt]{report}

\usepackage{fullpage}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsthm}
\usepackage{amstext}
\usepackage{appendix}
\usepackage{perpage}
\usepackage{xcolor}
\usepackage{tikz-cd}
\usepackage{hyperref}


\hypersetup{colorlinks=true,allcolors=[RGB]{126 49 123}}


\newtheorem{thm}{Theorem}[section]
\newtheorem{lemm}[thm]{Lemma}
\newtheorem{coro}[thm]{Corollary}
\newtheorem{prop}[thm]{Proposition}


\theoremstyle{definition}
\newtheorem{expl}[thm]{Example}
\newtheorem{defi}[thm]{Definition}
\newtheorem{remark}[thm]{Remark}
\newtheorem{quest}[thm]{Question}








\begin{document}
\title{title}
\author{author}







\begin{titlepage}
\begin{center}
\vspace*{10mm}

\textbf{\huge (title)}

\vspace{20mm}

\textbf{\Large (author)}


\vfill

{\Large
\begin{equation*}
\text{(wanna display some formula?)}
\end{equation*}
}

\vspace{10mm}

{\small 
A thesis presented for the degree of
Doctor of Philosophy

\vspace{10mm}

Department of Mathematical Sciences\\
Durham University\\
UK\\
\vspace{10mm}

(date)
}


\end{center}
\end{titlepage}








\section*{\center Abstract}

(abstract)


\newpage




\section*{Declaration and copyright}

(declaration)

\vspace{2mm}\noindent (copyright)




\newpage




\section*{Acknowledgements}

(acknowledgement)








\tableofcontents






\chapter{A}





\section{B}


















\newpage
\addcontentsline{toc}{chapter}{Bibliography}
\bibliographystyle{alpha}
\bibliography{(ref file name)}












\end{document}
