deletions | additions       diff --git a/results.tex b/results.tex  index c877877..48d7094 100644  --- a/results.tex  +++ b/results.tex 
...
\begin{equation}  f_\rho(х) =  \begin{cases} 1_\rho&\text{если $х = х_\rho$;}\\   $О_\rho& О_\rho&  \text{если $х\neq х_\rho$,} \end{cases}  \end{equation}    
...