\batchmode
\hsize=17cm
\hoffset=-0.54cm
\voffset=-0.54cm
\vsize=9.9in
\footline={}
\def\rhead{ά. Δεκλστςα. {\sl "Δισγιπμιξα πςοηςαννιςοχαξιρ"}}
\def\leftheadline{
 \hbox to \hsize{\vbox to 10 pt {}%
   \llap{\tenbf\folio\kern 1pc}\tenit\rhead\hfil
 }
}
\def\rightheadline{
 \hbox to \hsize{\vbox to 10 pt {}%
   \tenit\hfil\rhead\rlap{\kern 1pc\tenbf\folio}
 }
}
\def\makeheadline{
 \vbox to 0pt{\vskip-22.5pt\ifodd\pageno\rightheadline\else\leftheadline\fi\vss}
 \nointerlineskip
}
\def\emph#1{{\it #1\/}}
\newcount\chapno
\chapno=0
\newcount\subchno
\newcount\subsubchno
\newcount\footno
\def\chapter#1{\penalty-250
  \advance\chapno by 1
  \subchno=0
  \footno=1
  \bigskip\noindent
  \centerline{\bf#1}\nobreak\medskip
}
\def\subchap#1{\medskip
\advance\subchno by 1
\subsubchno=0
\centerline{{\bf\the\chapno.\the\subchno.~#1}}\smallskip
}
\def\subsubchap#1{\medskip
\advance\subsubchno by 1
\centerline{{\bf\the\chapno.\the\subchno.\the\subsubchno.~#1}}\smallskip
}
\def\boxit#1{\vbox{\hrule\hbox{\vrule\kern 0pt
               \vbox{\kern 0pt #1 \kern 0pt}\kern 0pt\vrule}\hrule}}
\def\bskip{\hskip 0.5em plus 1fil}
\widowpenalty=10000
\clubpenalty=10000
\def\frac#1/#2{\leavevmode\kern.1em
\raise.5ex\hbox{\the\scriptfont0 #1}\kern-.1em
/\kern-.15em\lower.25ex\hbox{\the\scriptfont0 #2}}
\def\N{\char252\relax}
\def\sign{\mathop{\rm sign}\nolimits}
\def\kwd#1{\relax\ifmmode\hbox{\bf{}#1}\else{\bf{}#1}\fi}
\def\intro#1\par{{\narrower#1\par\medskip}}
\def\dfn#1{{\it#1}}
\def\pict#1{$$Picture\ #1$$}
\def\<#1>{\relax%
\ifmmode\langle\else$\langle$\fi%
{\hbox{\rm #1}}%
\ifmmode\rangle\else$\rangle$\fi%
}
\def\note#1{\footnote{$^\the\footno$}{#1}\global\advance\footno by 1}
\def\^{\char"0B\relax}
\def\{{\char"7B\relax}
\def\}{\char"7D\relax}
\def\true{{\it true}}
\def\GE{\ifmmode\ge\else$\ge$\fi}
\def\LE{\ifmmode\le\else$\le$\fi}
\def\NE{\ifmmode\not=\else$\not=$\fi}
\def\TO{\ifmmode\to\else$\to$\fi}
\def\var#1{{\it#1}}
\def\tnot{$\lnot$}
\def\and{\mathbin{\bf and}}
\def\or{\mathbin{\bf or}}
\def\non{\mathop{\bf non}\nolimits}
\def\ΞΟΔ{\mathop{\rm ΞΟΔ}\nolimits}
\def\ΞΟΛ{\mathop{\rm ΞΟΛ}\nolimits}
\def\wp{\mathop{\rm wp}\nolimits}
\def\wlp{\mathop{\rm wlp}\nolimits}
\def\cand{\mathbin{\bf cand}}
\def\wbox{\hbox{[]}}
\def\wdec{\mathop{\rm wdec}\nolimits}
\def\abs{\mathop{\rm abs}\nolimits}
{\obeyspaces\gdef {\ }}
\def\prg{\bgroup$$\obeyspaces\tt\let\par=\cr\obeylines%
\vbox\bgroup\halign\bgroup$##$\hfill\cr%
}
\def\grp{\egroup\egroup$$\egroup}
\def\.#1{\kwd{#1}}