\ifx\matalyzadefined{} \endinput \fi
\def\matalyzadefined{}
\input math

% HELIOCENTRIK
\message{Matalyza balik -- Kubo Kovac}

\def\rk{\mathrel{\rlap{\raise 3pt\hbox{$\to$}}\raise -2pt\hbox{$\to$}}}
\def\i<#1,#2>{\safemath{\left<#1,#2\right>}}
\def\Ri<#1,#2>{\hbox{\scr R}\i<#1,#2>}
\def\d{\,{\rm d}}
\let\D\Delta