%page numbers will be inserted by the printer 
\pagestyle{myheadings}\markboth{}{}
\def\onesize{\@setsize\onesize{16pt}\xivpt\@xivpt}
\def\twosize{\@setsize\onesize{14pt}\xiipt\@xiipt}
\def\titlesize{\@setsize\titlesize{18pt}\xviipt\@xviipt}
\def\ninesize{\@setsize\ninesize{10pt}\ixpt\@ixpt}
\textwidth342pt
%\textwidth29pc
\textheight 46pc
\renewcommand{\section}{\@startsection {section}{1}{\z@}{-3.5ex plus -1ex minus -.2ex}{2.3ex plus .2ex}{\onesize\bf}}
\renewcommand{\subsection}{\@startsection{subsection}{2}{\z@}{-3.25ex plus -1ex minus -.2ex}{1.5ex plus .2ex}{\twosize\bf}}
\renewcommand{\subsubsection}{\@startsection{subsubsection}{3}{\z@}{-3.25ex plus -1ex minus -.2ex}{1.5ex plus .2ex}{\normalsize\it}}
\def\footnotesize{\@setsize\footnotesize{9pt}\viiipt\@viiipt
\abovedisplayskip 6pt plus 2pt minus 4pt\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip \z@ plus 1pt\belowdisplayshortskip 3pt plus 1pt minus
2pt
\def\@listi{\leftmargin\leftmargini \topsep 3pt plus 1pt minus 1pt\parsep 2pt
plus 1pt minus 1pt
\itemsep \parsep}}
\def\@normalsize{\@setsize\normalsize{11pt}\xpt\@xpt
\abovedisplayskip 10pt plus2pt minus5pt\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip \z@ plus3pt\belowdisplayshortskip 6pt plus3pt
minus3pt\let\@listi\@listI} 
\def\footnoterule{\kern-3\p@ 
 \hrule width 138pt 
 \kern 2.6\p@} 
%the following will indent equations
\def\[{\relax\ifmmode\@badmath\else\bgroup\@beginparpenalty\predisplaypenalty
 \@endparpenalty\postdisplaypenalty
 \begin{trivlist}\item[]\leavevmode
 \hbox to\linewidth\bgroup$ \displaystyle
 \hskip\mathindent\bgroup\fi}
\def\]{\relax\ifmmode \egroup $\hfil \egroup \end{trivlist}\egroup\else
\@badmath \fi}
\def\equation{\@beginparpenalty\predisplaypenalty
 \@endparpenalty\postdisplaypenalty
\refstepcounter{equation}\trivlist \item[]\leavevmode
 \hbox to\linewidth\bgroup $ \displaystyle
\hskip\mathindent}
\def\endequation{$\hfil \displaywidth\linewidth\@eqnnum\egroup \endtrivlist}
\def\eqnarray{\stepcounter{equation}\let\@currentlabel=\theequation
\global\@eqnswtrue
\global\@eqcnt\z@\tabskip\mathindent\let\\=\@eqncr
\abovedisplayskip\topsep\ifvmode\advance\abovedisplayskip\partopsep\fi
\belowdisplayskip\abovedisplayskip
\belowdisplayshortskip\abovedisplayskip
\abovedisplayshortskip\abovedisplayskip
$$\halign to
\linewidth\bgroup\@eqnsel\hskip\@centering$\displaystyle\tabskip\z@
 {##}$&\global\@eqcnt\@ne \hskip 2\arraycolsep \hfil${##}$\hfil
 &\global\@eqcnt\tw@ \hskip 2\arraycolsep $\displaystyle{##}$\hfil 
 \tabskip\@centering&\llap{##}\tabskip\z@\cr}
\def\endeqnarray{\@@eqncr\egroup
 \global\advance\c@equation\m@ne$$\global\@ignoretrue }
\newdimen\mathindent 
\mathindent = 2 em