\documentstyle{amsppt}

%\title Garbled Physics \endtitle
%\author Albert Dvornik \endauthor

%\font\secf=cmbx12 scaled\magstep2
%\font\subf=cmbx12
%\def\section#1{{\leftskip=0pt plus1fil \rightskip\leftskip \baselineskip20pt
%    \bigskip\bigskip\noindent{\secf #1}\break\par\smallskip}}
%\def\subsec#1{{\leftskip=0pt plus1fil \rightskip\leftskip \baselineskip14pt
%    \medskip\noindent{\subf #1}\break\par\smallskip}}

\loadeurm\loadeusm\loadmsbm
\def\r{{\frak r}}
\def\p{{\frak p}}
\def\k{{\frak k}}
\def\f{{\frak f}}
\def\d{{\roman d}}
\def\vi{{\vec i}}
\def\vj{{\vec j}}
\def\vk{{\vec k}}
{\let\temp=\Psi \global\let\Psi=\varPsi \global\let\varPsi=\temp}
{\let\temp=\Phi \global\let\Phi=\varPhi \global\let\varPhi=\temp}
\def\fPsi{\hbox{\teneurm\char9}}

\heading   Exact propagation   \endheading

%\catcode`@=11
%\catcode`@=13

\input notes1
\input notes2
\input notes3

\end
