templateNV.sty

%% templateNV.sty
%% A package modified from NotesTeXV3.sty from 
%%        https://jhep.sissa.it/jhep/help/JHEP_TeXclass.jsp 
%% by Aditya Dhumuntarao. 

% ----------------------------------------------------------------------
%           Jhep Master Presets 
% ----------------------------------------------------------------------

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{templateNV}[2021/10/22 rV3]

\gdef\@fpheader{\ }
\gdef\@journal{jhep}

\newif\ifnotoc\notocfalse
\newif\ifemailadd\emailaddfalse
\newif\iftoccontinuous\toccontinuousfalse
\newif\ifnatbibsort\natbibsorttrue

\DeclareOption{no-natbib-sort}{\natbibsortfalse}
\ProcessOptions\relax

\ifnatbibsort\RequirePackage[numbers,sort&compress]{natbib}\else\RequirePackage[numbers,compress]{natbib}\fi
\RequirePackage{color}
\RequirePackage[colorlinks=true
,urlcolor=Maroon
,anchorcolor=Maroon
,citecolor=Maroon
,filecolor=Maroon
,linkcolor=Maroon
,menucolor=Maroon
,linktocpage=true
,pdfproducer=medialab
,pdfa=true
,pdfusetitle
]{hyperref}

% ----------------------------------------------------------------------
%           User Top Level Packages: Required
% ----------------------------------------------------------------------

\usepackage{marginnote,sidenotes,fancyhdr,geometry}
\usepackage[usenames,dvipsnames]{xcolor}
\usepackage[many]{tcolorbox}

% ----------------------------------------------------------------------
%           User Top Level Packages: Additional & Styling
% ----------------------------------------------------------------------

\usepackage[T1]{fontenc}                            % Font Styling
\usepackage{lmodern,mathrsfs}

\usepackage[shortlabels]{enumitem}                  % Enumitem Options

\usepackage{mathtools,amsthm,amssymb,amsfonts}      % Math Presets
\usepackage{thmtools,amsmath,cancel,dsfont,bm}
% \usepackage{minted}                                 % Code cells
\usepackage{array,tabularx,booktabs}                % Table Presets
\usepackage{nicematrix}                             % Block matrices
\usepackage{graphicx,wrapfig,float,caption}         % Figure Presets
\usepackage{setspace,multicol}                      % Text Presets
\usepackage{tikz,tikz-cd,tikzsymbols,physics}       % Physics Presets
\usepackage{lipsum}                                 % Placeholder text

% ----------------------------------------------------------------------
%           User Page Prefrences 
% ----------------------------------------------------------------------
\DeclareGraphicsExtensions{.pdf,.png,.jpg}

\geometry{paperheight=11in,paperwidth=8.5in,                   %fix paperwidth and height.
          marginparsep=.02\paperwidth,marginparwidth=.2\paperwidth,
          inner=.11\paperwidth,voffset=-1in,headheight=.02\paperheight,
          headsep=.03\paperheight,footskip=20pt,
          textheight=.795\paperheight,textwidth=.62\paperwidth}

  \pagestyle{fancy}%
  \newlength{\myoddoffset}%
  \setlength{\myoddoffset}{\marginparwidth + \marginparsep}%
  \renewcommand{\sectionmark}[1]{\markboth{#1}{}}%
  \renewcommand{\subsectionmark}[1]{\markright{#1}{}}%

  \fancypagestyle{fancynotes}{%
    \fancyhf{}%
    \fancyheadoffset[rh]{\myoddoffset}%
    \renewcommand{\headrulewidth}{0pt}%
    \fancyhead[L]{\textsc{\leftmark}}%
    \fancyhead[R]{\footnotesize \textit{\rightmark}~~~~ \thepage}%
  }%

  \fancypagestyle{fancypart}{%
    \fancyhf{}%
    \fancyfootoffset[rh]{\myoddoffset}%
    \renewcommand{\headrulewidth}{0pt}
    \fancyfoot[L]{\footnotesize \thepage}%
  }%

\newenvironment{fullpage}
    {\smallskip\noindent\begin{minipage}
    {\textwidth+\marginparwidth+\marginparsep}\hrule\smallskip\smallskip}
    {\hrule\end{minipage}\vspace{.1in}}

% ----------------------------------------------------------------------
%           User Created Environments 
% ----------------------------------------------------------------------

\newlength{\spacelength}
\settowidth{\spacelength}{\normalfont\ }
\declaretheoremstyle[
    headfont={\bfseries\sffamily\footnotesize},
    notefont={\normalfont},
    bodyfont={\normalfont},
    headpunct={\relax},%\newline,
    headformat={%
        \makebox[0pt][r]{\NAME\ \NUMBER\hspace{\marginparsep}}\hskip-\spacelength{\normalsize\NOTE}},
]{theorem}

\tcolorboxenvironment{theorem}{
  boxrule=0pt,
  boxsep=0pt,
  colback={White!90!Dandelion},
  enhanced jigsaw, 
  borderline west={1pt}{0pt}{Dandelion},
  sharp corners,
  before skip=10pt,
  after skip=10pt,
  left=5pt,
  right=5pt,
  breakable,
}

\declaretheorem[style=theorem]{theorem}

\let\proof\relax
\let\endproof\relax

\declaretheoremstyle[
    headfont={\small\scshape},
    notefont={\normalfont},
    bodyfont={\normalfont},
    headpunct={\relax},
    headformat={%
        \makebox[0pt][r]{\NAME\hspace{\marginparsep}}\hskip-\spacelength{\NOTE}},
]{proof}

\tcolorboxenvironment{proof}{
  boxrule=0pt,
  boxsep=0pt,
  blanker,
  borderline west={1pt}{0pt}{NavyBlue!80!white},
  before skip=10pt,
  after skip=10pt,
  left=5pt,
  right=5pt,
  breakable,
}

\declaretheoremstyle[
    headfont={\footnotesize\itshape},
    notefont={\normalfont},
    bodyfont={\normalfont},
    headpunct={\relax},
    headformat={%
        \makebox[0pt][r]{\NAME\hspace{\marginparsep}}\hskip-\spacelength{\NOTE}},
]{claim}

\declaretheorem[
    style=proof,
    qed=\qedsymbol]{proof}

\declaretheorem[style=claim]{Intuition}

\theoremstyle{theorem}
\newtheorem{ques}{Question}

\theoremstyle{theorem}
\newtheorem{example}{Exercise}
\tcolorboxenvironment{example}{
  boxrule=0pt,
  boxsep=0pt,
  blanker,
  borderline west={1pt}{0pt}{Red},
  before skip=35pt,
  after skip=10pt,
  sharp corners,
  left=5pt,
  right=5pt,
  breakable,
}

\theoremstyle{theorem}
\newtheorem{definition}{Definition}
\tcolorboxenvironment{definition}{
  boxrule=0pt,
  boxsep=0pt,
  colback={White!90!Cerulean},
  enhanced jigsaw, 
  borderline west={1pt}{0pt}{Cerulean},
  sharp corners,
  before skip=25pt,
  after skip=10pt,
  left=5pt,
  right=5pt,
  breakable,
}

\theoremstyle{theorem}
\newtheorem{lemma}{Lemma}
\tcolorboxenvironment{lemma}{
  boxrule=0pt,
  boxsep=0pt,
  blanker,
  borderline west={1pt}{0pt}{Red},
  before skip=10pt,
  after skip=10pt,
  sharp corners,
  left=5pt,
  right=5pt,
  breakable,
}


\theoremstyle{claim}
\newtheorem{intu}{Intuition}

\theoremstyle{claim}
\newtheorem{sol}{Solution}

\theoremstyle{claim}
\newtheorem{remark}{Remark}

% \theoremstyle{claim}
% \newtheorem{example}{Example}
% \tcolorboxenvironment{example}{
%   boxrule=0pt,
%   boxsep=0pt,
%   blanker,
%   borderline west={1pt}{0pt}{Black},
%   sharp corners,
%   before skip=10pt,
%   after skip=10pt,
%   left=5pt,
%   right=5pt,
%   breakable,
% }

\renewcommand*{\raggedleftmarginnote}{\noindent}
\renewcommand*{\raggedrightmarginnote}{\noindent}
\newcommand{\mn}[1]{\textsuperscript{\thesidenote}{}\marginnote{\textsuperscript{\thesidenote}{}\itshape\footnotesize #1}\refstepcounter{sidenote}}
\newcommand{\en}[1]{\marginnote{\footnotesize{#1}}}
\newcommand{\lec}[2]{{\setlength{\marginparwidth}{.07\paperwidth}\reversemarginpar\marginnote{\centering\footnotesize{\textsf{\bfseries #1}}\\#2}}}
\newcommand{\sn}[1]{\sidenote{\itshape\footnotesize #1}}

% ----------------------------------------------------------------------
%           User Macros: Add Below 
% ----------------------------------------------------------------------
% Macros: https://blog.martisak.se/2023/08/11/top-latex-commands/

\newcommand{\invis}[1]{\begingroup\color{white}#1\endgroup}

% These commands are dynamically sized by the * version
\DeclarePairedDelimiter\br{\lbrace}{\rbrace}
\DeclarePairedDelimiter\p{\lparen}{\rparen}
\DeclarePairedDelimiter\pl{\Big(}{\Big)}
\DeclarePairedDelimiter\sparen{[}{]}
\DeclarePairedDelimiter\bk{\langle}{\rangle}
% \abs{} already defined: |x|
% \norm{} already defined: ||x||
% \ip{} and \braket{} already defined: \ip{x} = <x|x>, \ip{x}{y} = <x|y>

\newcommand{\BigO}[1]{\mathcal{O}\!\left(#1\right)}

\newcommand{\sharedkey}{
  \raisebox{-.5 ex}{\tikz{
  \draw[fill=blue, draw=white] (0ex,0) arc(90:270:1ex) -- cycle;
  \draw[fill=red, draw=white] (0ex,0) arc(90:-90:1ex) -- cycle; }}
}

\newcommand{\di}{\mathrm{i}\mkern1mu} % imaginary i in roman and with correct spacing

%$\pd{f}{x}$ produces $\frac{\partial f}{\partial x}$
\newcommand{\pd}[2]{\frac{\partial #1}{\partial #2}}

\newcommand\ub[2]{
  \underbracket[.25pt][12pt]{#1}_{#2}
}
\newcommand\ob[2]{
  \overbracket[.25pt][12pt]{#1}^{#2}
}

\newcommand{\nt}{{}^3\!} % Superscript 3 before character with negative spacing
\newcommand{\np}{{}^+\!} % Superscript + before character with negative spacing

\newcommand{\Z}{\mathbb{Z}} % Integer numbers
\newcommand{\R}{\mathbb{R}} % Real numbers
\newcommand{\N}{\mathbb{N}} % Natural numbers or prime numbers
\newcommand{\C}{\mathbb{C}} % Complex numbers
\newcommand{\Np}{\mathbb{N}^+} % Natural numbers including 0
\newcommand{\F}{\mathbb{F}} % Natural numbers including 0
\newcommand{\Hs}{\mathbb{H}} % Half spaces/Quaternions

% Groups and Algebras
% \newcommand{\O}{\text{O}}
\newcommand{\U}{\text{U}}
\newcommand{\GL}{\text{GL}}
\newcommand{\SL}{\text{SL}}
\newcommand{\SO}{\text{SO}}
\newcommand{\SU}{\text{SU}}
% \newcommand{\sl}{\mathfrak{sl}}
\newcommand{\so}{\mathfrak{so}}
\newcommand{\su}{\mathfrak{su}}

\newcommand\tb[1]{\textbf{#1}} % Bold text

% Remember \intercal for matrix transpose
\newcommand\id{\mathds{1}} % Identity
\newcommand\vol{\text{vol}} % Volume
\newcommand\diag{\text{diag}} % Diagonal matrix
\newcommand\sign{\text{sign}} % Sign
\newcommand\supp{\text{supp\:}} % Support
\newcommand\Vect{\text{Vect}} % Vector space
\newcommand\Ad{\text{Ad}} % Adjoint space

% Images for math environment
% Centered image
\newcommand{\mim}[1]{
\begin{gathered}
  \includegraphics[width=6em]{#1}
\end{gathered}}
% Centered image with size
\newcommand{\mims}[2]{
\begin{gathered}
  \includegraphics[width=#2]{#1}
\end{gathered}}
% Captioned centered image
\newcommand{\mimc}[2]{
\begin{gathered}
  \includegraphics[width=6em]{#1}
  \caption{#2}
\end{gathered}}
% Rotated centered image
\newcommand{\mima}[2]{
\begin{gathered}
  \rotatebox{#2}{\includegraphics[width=6em]{#1}}
\end{gathered}}

% Fraktur font
\newcommand{\mf}[1]{\mathfrak{#1}}
% Calligraphic font
\newcommand{\mc}[1]{\mathcal{#1}}
% Roman numerals
\newcommand{\rn}[1]{\MakeUppercase{\romannumeral #1}}
%===========================================================================================================

\def\@subheader{\@empty}
\def\@keywords{\@empty}
\def\@abstract{\@empty}
\def\@xtum{\@empty}
\def\@dedicated{\@empty}
\def\@arxivnumber{\@empty}
\def\@collaboration{\@empty}
\def\@collaborationImg{\@empty}
\def\@proceeding{\@empty}
\def\@preprint{\@empty}
\def\@acknowledgments{\@empty}

\newcommand{\subheader}[1]{\gdef\@subheader{#1}}
\newcommand{\keywords}[1]{\if!\@keywords!\gdef\@keywords{#1}\else%
\PackageWarningNoLine{\jname}{Keywords already defined.\MessageBreak Ignoring last definition.}\fi}
\renewcommand{\abstract}[1]{\gdef\@abstract{#1}}
\newcommand{\dedicated}[1]{\gdef\@dedicated{#1}}
\newcommand{\arxivnumber}[1]{\gdef\@arxivnumber{#1}}
\newcommand{\proceeding}[1]{\gdef\@proceeding{#1}}
\newcommand{\xtumfont}[1]{\textsc{#1}}
\newcommand{\correctionref}[3]{\gdef\@xtum{\xtumfont{#1} \href{#2}{#3}}}
\newcommand\jname{JHEP}
\newcommand{\acknowledgments}[1]{\gdef\@acknowledgments{#1}}
%\newcommand\acknowledgments{\section*{Acknowledgments}}
\newcommand\notoc{\notoctrue}
\newcommand\preprint[1]{\gdef\@preprint{\hfill #1}}



%Equivalent to ``\footnote'', but can be used inside the \author macro
% because it does not write the footnote mark
% it has an optional argument that will be used as footnote mark when given
% WARNING: when the optional argument is used, the footnotecounter is not increased
% WARNING: the character ``!'' cannot be used.
% If you really need it use somthing like [\relax !] as the optional arg.
\newcommand\note[2][]{%
\if!#1!%
\stepcounter{footnote}\footnotetext{#2}%
\else%
{\renewcommand\thefootnote{#1}%
\footnotetext{#2}}%
\fi}



%Use this if you want to try to keep some piece of the abstract on a
%very long first page
\newcommand\compress{%
\renewcommand\afterProceedingsSpace{\bigskip}%
\renewcommand\afterTitleSpace{\bigskip}%
\renewcommand\afterRuleSpace{\bigskip\bigskip}
\renewcommand\afterEmailSpace{\par\bigskip}}

%authors and affiliations
\newtoks\auth@toks
\renewcommand{\author}[2][]{%
  \if!#1!%
    \auth@toks=\expandafter{\the\auth@toks#2\ }%
  \else
    \auth@toks=\expandafter{\the\auth@toks#2$^{#1}$\ }%
  \fi
}

\newtoks\affil@toks\newif\ifaffil\affilfalse
\newcommand{\affiliation}[2][]{%
\affiltrue
  \if!#1!%
    \affil@toks=\expandafter{\the\affil@toks{\item[]#2}}%
  \else
    \affil@toks=\expandafter{\the\affil@toks{\item[$^{#1}$]#2}}%
  \fi
}

%emails
%automatically put a comma between emails
\newtoks\email@toks\newcounter{email@counter}%
\setcounter{email@counter}{0}%
\newcommand{\emailAdd}[1]{%
\emailaddtrue%
\ifnum\theemail@counter>0\email@toks=\expandafter{\the\email@toks, \@email{#1}}%
\else\email@toks=\expandafter{\the\email@toks\@email{#1}}%
\fi\stepcounter{email@counter}}
\newcommand{\@email}[1]{\href{mailto:#1}{\tt #1}}


% Collaboration macros
\newcommand*\collaboration[1]{\gdef\@collaboration{#1}}
\newcommand*\collaborationImg[2][]{\gdef\@collaborationImg{#2}}

%all pieces get a ``after'' spacing
\newcommand\afterLogoSpace{\smallskip}
\newcommand\afterSubheaderSpace{\vskip3pt plus 2pt minus 1pt}
\newcommand\afterProceedingsSpace{\vskip21pt plus0.4fil minus15pt}
\newcommand\afterTitleSpace{\vskip10pt}
%\newcommand\afterRuleSpace{\vskip23pt plus0.06fil minus13pt}
\newcommand\afterRuleSpace{\vskip20pt plus0.06fil minus13pt}
\newcommand\afterCollaborationSpace{\vskip3pt plus 2pt minus 1pt}
\newcommand\afterCollaborationImgSpace{\vskip3pt plus 2pt minus 1pt}
\newcommand\afterAuthorSpace{\vskip5pt plus4pt minus4pt}
\newcommand\afterAffiliationSpace{\vskip3pt plus3pt}
%\newcommand\afterEmailSpace{\vskip16pt plus9pt minus10pt\filbreak}
\newcommand\afterEmailSpace{\vskip20pt\filbreak}
\newcommand\afterXtumSpace{\par\bigskip}
\newcommand\afterAbstractSpace{\vskip16pt plus9pt minus13pt}
\newcommand\afterKeywordsSpace{\vskip16pt plus9pt minus13pt}
\newcommand\afterArxivSpace{\vskip3pt plus0.01fil minus10pt}
\newcommand\afterDedicatedSpace{\vskip0pt plus0.01fil}
\newcommand\afterTocSpace{\bigskip\medskip}
\newcommand\afterTocRuleSpace{\bigskip\bigskip}
%this is the ``itemsep'' of the affiliations list
\newlength{\affiliationsSep}\setlength{\affiliationsSep}{-3pt}
%this hook is needed if the toc starts on the first page
\newcommand\beforetochook{\pagestyle{myplain}\pagenumbering{roman}}

\DeclareFixedFont\trfont{OT1}{phv}{b}{sc}{11}

%first page
\renewcommand\maketitle{
%% First page
\pagestyle{empty}
\thispagestyle{titlepage}
\newgeometry{marginparwidth=0pt,marginparsep=0pt,textwidth=.8\paperwidth,hoffset=0in,voffset=0in}
\setcounter{page}{0}
\noindent{\small\scshape\@fpheader}\@preprint\par
\afterLogoSpace
% Subheader
\if!\@subheader!\else\noindent{\trfont{\@subheader}}\fi
\afterSubheaderSpace
% Proceedings
\if!\@proceeding!\else\noindent{\sc\@proceeding}\fi
\afterProceedingsSpace
% Title
{\huge\centering\sffamily\bfseries\sc\@title\par}
\afterTitleSpace
% Rule
{\color{Maroon}\hrule height .6\p@}%
\afterRuleSpace
% Collaboration
\if!\@collaboration!\else
{\Large\bfseries\sffamily\raggedright\@collaboration}\par
\afterCollaborationSpace
\fi
%
\if!\@collaborationImg!\else
{\normalsize\bfseries\sffamily\raggedright\@collaborationImg}\par
\afterCollaborationImgSpace
%% I leave the size and font so that if there are two collaboration
%% they can be linked with an 'and'
\fi
% Author
%{\bfseries\raggedright\sffamily\the\auth@toks\par}
{\bfseries\raggedright\sffamily\sc\the\auth@toks\par}
\afterAuthorSpace
% Affiliation
\ifaffil\begin{list}{}{%
\setlength{\leftmargin}{0.28cm}%
\setlength{\labelsep}{0pt}%
\setlength{\itemsep}{\affiliationsSep}%
\setlength{\topsep}{-\parskip}}
\itshape\small%
\the\affil@toks
\end{list}\fi
\afterAffiliationSpace
% E-mail
\ifemailadd %% if emailadd is true
\noindent\hspace{0.28cm}\begin{minipage}[l]{.9\textwidth}
\begin{flushleft}
%\textit{E-mail:} \the\email@toks
\the\email@toks
\end{flushleft}
\end{minipage}
\else %% if emailaddfalse do nothing
\PackageWarningNoLine{\jname}{E-mails are missing.\MessageBreak Plese use \protect\emailAdd\space macro to provide e-mails.}
\fi
\afterEmailSpace
%Erratum or addendum
\if!\@xtum!\else\noindent{\@xtum}\afterXtumSpace\fi
% Abstract
%\if!\@abstract!\else\noindent{\renewcommand\baselinestretch{.9}\textsc{Abstract:}}\ \@abstract\afterAbstractSpace\fi
\if!\@abstract!\else\noindent\@abstract\afterAbstractSpace\fi
% Keywords
\if!\@keywords!\else\noindent{\textsc{Keywords:}} \@keywords\afterKeywordsSpace\fi
% Arxivnumber
\if!\@arxivnumber!\else\noindent{\textsc{ArXiv ePrint:}} \href{http://arxiv.org/abs/\@arxivnumber}{\@arxivnumber}\afterArxivSpace\fi
% Dedication
\if!\@dedicated!\else\vbox{\small\it\raggedleft\@dedicated}\afterDedicatedSpace\fi
%
\ifnotoc\else
\iftoccontinuous\else\newpage\fi
\beforetochook\hrule
\tableofcontents
\afterTocSpace
\hrule
\afterTocRuleSpace
\fi
%\if!\@acknowledgments!\else\vfill\noindent{\renewcommand\baselinestretch{.9}\textsc{Acknowledgments:}}\ \@acknowledgments\afterAbstractSpace\fi
\setcounter{footnote}{0}
\restoregeometry
\pagestyle{myplain}\pagenumbering{arabic}
} % close the \renewcommand\maketitle{


% Page layout
\renewcommand{\baselinestretch}{1.0}\normalsize
\setlength\lineskip{1\p@}
\setlength\parindent{1.2\parindent}
\setlength\normallineskip{1\p@}
\setlength\parskip{0\p@ \@plus \p@}
\@lowpenalty   51
\@medpenalty  151
\@highpenalty 301
\widowpenalty 1000
\clubpenalty 1000

\setcounter{topnumber}{4}
\renewcommand\topfraction{1}
\setcounter{bottomnumber}{1}
\renewcommand\bottomfraction{.6}
\setcounter{totalnumber}{5}
\renewcommand\textfraction{0}
\renewcommand\floatpagefraction{1}
\addtolength\textheight{\topskip}

\marginparpush 6\p@
\topmargin   .05\paperheight

\setlength\arraycolsep{2\p@}
\setlength\tabcolsep{6\p@}
\setlength\arrayrulewidth{.4\p@}
\setlength\doublerulesep{2\p@}
\setlength\tabbingsep{\labelsep}
\skip\@mpfootins = \skip\footins
\setlength\fboxsep{3\p@}
\setlength\fboxrule{.4\p@}

% No dots in the table of contents
\renewcommand{\@dotsep}{10000}

% Footer and header of the body
% the command ``\pagestyle{myplain}'' must be inserted
% just after ``\begin{document}''
\newcommand\ps@myplain{
\pagenumbering{arabic}
\renewcommand\@oddfoot{\hfill-- \thepage\ --\hfill}
\renewcommand\@oddhead{}}
\let\ps@plain=\ps@myplain



% no header or footer in the title page
\newcommand\ps@titlepage{\renewcommand\@oddfoot{}\renewcommand\@oddhead{}}

%number equations after the sections
\renewcommand{\theequation}{\thesection.\arabic{equation}}
\numberwithin{equation}{section}


%headings style
\renewcommand\section{\@startsection{section}{1}{\z@}%
                                   {-3.5ex \@plus -1.3ex \@minus -.7ex}%
                                   {2.3ex \@plus.4ex \@minus .4ex}%
                                   {\normalfont\large\bfseries}}
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%
                                   {-2.3ex\@plus -1ex \@minus -.5ex}%
                                   {1.2ex \@plus .3ex \@minus .3ex}%
                                   {\normalfont\normalsize\bfseries}}
\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%
                                   {-2.3ex\@plus -1ex \@minus -.5ex}%
                                   {1ex \@plus .2ex \@minus .2ex}%
                                   {\normalfont\normalsize\bfseries}}
\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}%
                                   {1.75ex \@plus1ex \@minus.2ex}%
                                   {-1em}%
                                   {\normalfont\normalsize\bfseries}}
\renewcommand\subparagraph{\@startsection{subparagraph}{5}{\parindent}%
                                   {1.75ex \@plus1ex \@minus .2ex}%
                                   {-1em}%
                                   {\normalfont\normalsize\bfseries}}

\RequirePackage{titlesec}

\titleformat{name=\section}[display]
{\normalfont}
{\footnotesize\textsc{Section \thesection}}
{0pt}
{\Large\bfseries}
[\vspace{-10pt}\color{Maroon}\rule{\textwidth}{.6pt}]

\titleformat{name=\section,numberless}[hang]
{\normalfont}
{}
{0pt}
{\Large\bfseries}

\titleformat{name=\subsection}[display]
{\normalfont}
{\footnotesize\textsc{Subsection \thesubsection}}
{0pt}
{\large\bfseries}
[\vspace{-5pt}\color{Maroon}\rule{\textwidth}{.6pt}]

\titleformat{\part}[hang]{{\thispagestyle{fancypart}}\Huge\bfseries}{\marginnote{
\begin{tcolorbox}[width=\marginparwidth,height=\marginparwidth/2,colback=black!50!white,colframe=black!50!white,center title,fonttitle=\bfseries\normalsize,title=BOOK,text fill]
  \begin{center}
  {\color{white}\thepart}
  \end{center}
\end{tcolorbox}
}[-1.25in]}{0pt}{\Huge\bfseries\itshape}

%Caption of figure and table
\def\fnum@figure{\textbf{\figurename\nobreakspace\thefigure}}
\def\fnum@table{\textbf{\tablename\nobreakspace\thetable}}

%redefining \@makecaption, to have captions with \small font size
%taken from article.cls l.489--498
%the only differences are the ``\small '' commands added on two lines
\long\def\@makecaption#1#2{%
  \vskip\abovecaptionskip
  \sbox\@tempboxa{\small #1. #2}%
  \ifdim \wd\@tempboxa >\hsize
    \small #1. #2\par
  \else
    \global \@minipagefalse
    \hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
  \fi
  \vskip\belowcaptionskip}





%apply some formatting on the biblio
%without redefining the whole env
\let\oldthebibliography=\thebibliography
\let\endoldthebibliography=\endthebibliography
\renewenvironment{thebibliography}[1]{%
\begin{oldthebibliography}{#1}%
\small%
\raggedright%
\setlength{\itemsep}{5pt plus 0.2ex minus 0.05ex}%
}%
{%
\end{oldthebibliography}%
}

% Reset Exercise counter at each part
% TODO fix bug which causes references to link incorrectly
% \makeatletter
% \@addtoreset{example}{part}
% \makeatother