\input horak
\rm

%\unitlength=1mm
\def\sbs{\fam\vefam\tenve}

\def\frc#1#2{%
  \mathchoice{%
    {\textstyle\mathstrut#1\over\textstyle\mathstrut#2}}%
    {{\textstyle\mathstrut#1\over\textstyle\mathstrut#2}}%
    {{\scriptstyle\mathstrut#1\over\scriptstyle\mathstrut#2}}%
    {{\mathstrut#1\over\mathstrut#2}%
  }%
}

% nov‚ oper tory

\def\tg{\mathop{\rm tg}\nolimits}
\def\arctg{\mathop{\rm arctg}\nolimits}

\def\vl{{\sbs l}}
\def\vy{{\sbs y}}
\def\va{{\sbs a}}
\def\vp{{\sbs p}}
\def\vv{{\sbs v}}
\def\vw{{\sbs w}}
\def\vr{{\sbs r}}
\def\vu{{\sbs u}}
\def\vg{{\sbs g}}
\def\vk{{\sbs k}}
\def\vR{{\sbs R}}
\def\vA{{\sbs A}}
\def\vB{{\sbs B}}
\def\vC{{\sbs C}}
\def\vD{{\sbs D}}
\def\vF{{\sbs F}}
\def\vE{{\sbs E}}
\def\vM{{\sbs M}}
\def\vN{{\sbs N}}
\def\vU{{\sbs U}}
\def\vI{{\sbs I}}
\def\vL{{\sbs L}}
\def\vA{{\sbs A}}
\def\vZ{{\sbs Z}}
\def\vT{{\sbs T}}
\def\vY{{\sbs Y}}
\def\vF{{\sbs F}}
\def\vS{{\sbs S}}

\def\om{\hbox{\ve\char151}}
\def\Om{\hbox{\ve\char10}}
\def\ep{\hbox{\ve\char153}}
\def\ph{\hbox{\ve\char161}}
\def\ps{\hbox{\ve\char150}}
\def\th{\hbox{\ve\char154}}
\def\ta{\hbox{\ve\char146}}
\def\veF{\hbox{\ve F}}
\def\veE{\hbox{\ve E}}
\def\veT{\hbox{\ve T}}
\def\veB{\hbox{\ve B}}
\def\veL{\hbox{\ve L}}
\def\veM{\hbox{\ve M}}
\def\vev{\hbox{\ve v}}
\def\veu{\hbox{\ve u}}
\def\ver{\hbox{\ve r}}
\def\veg{\hbox{\ve g}}
\def\ves{\hbox{\ve s}}


\def\Ue{U_{\rm e}}
\def\Um{U_{\rm m}}
\def\Ri{R_{\rm i}}
\def\Rm{R_{\rm m}}
\def\Mm{M_{\rm m}}
\def\Ar{A_{\rm r}}
\def\IA{I_{\rm A}}
\def\Ek{E_{\rm k}}
\def\Ep{E_{\rm p}}
\def\lt{l_{\rm t}}
\def\lv{l_{\rm v}}
\def\MeV{\hbox{\rm MeV}}

\def\kapa{\kappa}
\def\kpa{\kappa}
\def\ka{\kappa}
\def\ex{\cdot10^}
