equal
  deleted
  inserted
  replaced
  
    
    
   934   | 
   934   | 
   935   \begin{center} | 
   935   \begin{center} | 
   936   \bl{$(\ZERO \cdot (b \cdot c)) + ((\ZERO \cdot c) + \ONE)$} | 
   936   \bl{$(\ZERO \cdot (b \cdot c)) + ((\ZERO \cdot c) + \ONE)$} | 
   937   \end{center} | 
   937   \end{center} | 
   938   | 
   938   | 
   939   and answer  | 
   939   and answer how this regular expression matches the empty string  | 
   940   | 
   940   | 
   941   \begin{center} | 
   941   \begin{center} | 
   942   \bl{$Right(Right(Empty))$} | 
   942   \bl{$Right(Right(Empty))$} | 
   943   \end{center}\bigskip | 
   943   \end{center}\bigskip | 
   944   | 
   944   | 
   945   But now we simplify to \bl{$\ONE$} and produce \bl{$Empty$}. | 
   945   But now we simplify this to \bl{$\ONE$} and would produce \bl{$Empty$}. | 
   946   | 
   946   | 
   947 \end{frame} | 
   947 \end{frame} | 
   948 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%    | 
   948 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%    | 
   949   | 
   949   | 
   950 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  | 
   950 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  |