%% 
%%  Example 01-14-3 
%%  Copyright (C) 2017 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{328.62788pt}
\usepackage[T1]{fontenc}
\usepackage{kpfonts}
%StartShownPreambleCommands
\makeatletter
\def\@bracketheight{2pt}
\def\bracketend#1#2{\vrule height #2 width #1\relax}
\def\overbracket{\@ifnextchar[{\@overbracket}{\@overbracket[\@bracketheight]}}
\def\@overbracket[#1]{\@ifnextchar[{\@over@bracket[#1]}{\@over@bracket[#1][0.3em]}}
\def\@over@bracket[#1][#2]#3{%\message {Overbracket: #1,#2,#3}
   \mathop {\vbox {\m@th \ialign {##\crcr \noalign {\kern 3\p@
   \nointerlineskip }\downbracketfill {#1}{#2}
        \crcr \noalign {\kern 3\p@ }
        \crcr  $\hfil \displaystyle {#3}\hfil $%
        \crcr} }}\limits}
\def\downbracketfill#1#2{$\m@th \setbox \z@ \hbox {$\braceld$}
    \edef\@bracketheight{\the\ht\z@}\downbracketend{#1}{#2}
    \leaders \vrule \@height #1 \@depth \z@ \hfill
    \leaders \vrule \@height #1 \@depth \z@ \hfill
\downbracketend{#1}{#2}$}
\def\downbracketend#1#2{\vrule depth #2 width #1\relax}
\makeatother
%StopShownPreambleCommands
\begin{document}
$\begin{array}{rcl}
  \textrm{Hate Science  }& \overbracket[0.5pt]{1\rightarrow2\rightarrow3\rightarrow4}
    \overbracket[0.75pt][0.75em]{\rightarrow5\rightarrow6\rightarrow7}
    \overbracket[1pt][1em]{\rightarrow8\rightarrow9\rightarrow10} & \textrm{Love Science}\\
 & \textrm{low}\hspace{1.5cm}\textrm{medium}\hspace{1.5cm}\textrm{high}\nonumber
 \end{array}$
\end{document}
