\vsize 9in
\hsize 6.5in
\def\goodbreak{\par\penalty-500 }
\def\problem#1\par{\bigskip\bigskip\goodbreak\centerline{Problem #1}\bigskip}
\font\bigbf=cmbx12
\def\ni{\noindent}
\def\bs{\bigskip}
\def\ms{\medskip}
\def\ss{\smallskip}
\define\theorem#1:#2\par{\proclaim{Theorem #1}#2\endproclaim}
\define\proof{{\demo{Proof}}}
\define\endproof{\qed\enddemo\smallskip}
\def\subhead{\bf}
\def\C{{\Bbb C}}
\def\R{{\Bbb R}}
\def\Q{{\Bbb Q}}
\def\Z{{\Bbb Z}}
\def\({\left(}
\def\){\right)}
\define\Area{\operatorname{Area}\nolimits}
\input psfig.tex
