\begin
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\documentclass[twoside]{book}
% ==== Remove chapter name from the header in each page
\usepackage{fancyhdr} % For custom headers and footers
\pagestyle{fancy}
% Clear all headers and footers
\fancyhf{}
% Keep page number in the header (optional)
\fancyhead[LE,RO]{\thepage} % Page number on the left for even pages (LE) and right for odd pages (RO)
% To remove chapter name from the header
\fancyhead[LO,RE]{} % Clears left header on odd pages and right header on even pages
%====== REQUIRE Package for title pages
% source: https://tex.stackexchange.com/questions/59460/custom-title-page-in-report-or-book-class
\usepackage{xcolor}
\usepackage{graphicx}
\usepackage[executivepaper,margin=1in, right=1.25in,left=1.25in,top=1.1in,bottom=1.1in]{geometry}
% ======= Other utility packages
\usepackage{layouts}
\usepackage{etoolbox}
\usepackage{booktabs}
\usepackage{authblk}
\usepackage{amsmath,amsfonts,amssymb,amsthm,mathtools,mathrsfs}
\usepackage{cases}
\usepackage{empheq}
\usepackage{enotez}
\usepackage{pdflscape}
\usepackage{natbib}
\usepackage{subcaption}
\usepackage{multirow}
\usepackage{xr}
\usepackage{todonotes}
\usepackage{setspace}
\usepackage{threeparttable}
\usepackage{tikz,tikzscale}
\usetikzlibrary{arrows,calc,automata,patterns,positioning,shapes.geometric,decorations.pathreplacing,decorations.markings}
\usepackage{pgfplots}
\usepgfplotslibrary{groupplots}
\pgfplotsset{width=10cm,compat=1.9}
\usepackage{calrsfs}
\usepackage{enotez}
\setenotez{backref=true}
\usepackage{enumitem}
\newcommand{\red}[1]{\textcolor{red}{#1}}
\newcommand{\blue}[1]{\textcolor{blue}{#1}}
\newcommand{\green}[1]{\textcolor{green}{#1}}
\newcommand{\teal}[1]{\textcolor{teal}{#1}}
\theoremstyle{definition}\newtheorem{definition}{Definition}
\newtheorem{theorem}{Theorem}
\newtheorem{corollary}{Corollary}[theorem]
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{ass}{Assumption}
\theoremstyle{definition}\newtheorem{remark}{Remark}
\theoremstyle{definition}\newtheorem{prop}{Proposition}
\newtheorem{notation}{Notation}
\theoremstyle{definition}\newtheorem{fact}{Fact}
\renewcommand\qedsymbol{$\blacksquare$}
\usepackage{tabularx}
\usepackage{xurl}
\usepackage{hyperref}
\hypersetup{
colorlinks=true,
linkcolor={red!50!black},
citecolor={blue!50!black},
urlcolor={blue!80!black}
}
% ========= Subabstract for each chapter
\newenvironment{chapabstract}
{
\begin{center}%
\vspace*{1.5cm}
\Large \bfseries Abstract \vspace{-.5em}\vspace{0pt}
\end{center}
\list{}{%
\setlength{\leftmargin}{5mm}% <---------- CHANGE HERE
\setlength{\rightmargin}{\leftmargin}%
}%
\item\relax
}
{\par}
\makeatother
%============== APPENDICES
\usepackage[titletoc]{appendix}
\author{ authorname }
\begin{document}
% ----------------------------------------------------------------
\begin{titlepage}
\begin{center}
% ----------------------------------------------------------------
\includegraphics[width=0.19\textwidth]{logo.png}\\[5pt]
{Graduate School of Economics and Management}\\[5pt]
{TOHOKU UNIVERSITY}\\[5pt]
\vspace{1.5cm}
{\huge\bfseries Three Essays on \\ Economics Growth\\}
% ----------------------------------------------------------------
\vspace{1.5cm}
{\Large\bfseries author}\\[5pt]
% ----------------------------------------------------------------
\vspace{2cm}
{Dissertation submitted to} \\[5pt]
\emph{{Faculty of Economics, Tohoku University}}\\[5pt]
{in fulfillment of the requirements for the of} \\[5pt]
\textsc{\Large{{Doctor of Philosophy}}} \\[5pt]
{in Economics} \vspace{0.4cm} \\[2cm]
\vfill
% List of Professor and Examiners
\begin{tabular}{l l}
\textbf{Supervisor:} & Prof. A \\
\textbf{Referees:} & Prof. B \\
& Prof. C \\
& Prof. D
\end{tabular}
\vfill
Submission Date: \today
\end{center}
\end{titlepage}
% ========= Acknowledgement page
\clearpage
\chapter*{Acknowledgement}
I would like to express my thanks to \dots
% TOC page
\setcounter{tocdepth}{1}
\tableofcontents
% Main chapters
\include{Chapter1.tex}
% Appendices
\begin{appendices}
\appendixpage
%\noappendicestocpagenum
%\addappheadtotoc
\include{AppendixA.tex}
\end{appendices}
% Reference
\clearpage
\bibliographystyle{apalike}
\bibliography{reference}
\end{document}