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    26   | 
    26   | 
    27 \normalsize  | 
    27 \normalsize  | 
    28   \begin{center} | 
    28   \begin{center} | 
    29   \begin{tabular}{lp{8cm}} | 
    29   \begin{tabular}{lp{8cm}} | 
    30   Email:  & christian.urban at kcl.ac.uk\\  | 
    30   Email:  & christian.urban at kcl.ac.uk\\  | 
    31   Office: & N7.07 (North Wing, Bush House)\\  | 
    31   Office: & N\liningnums{7.07} (North Wing, Bush House)\\ | 
    32   Slides: & KEATS (also homework and coursework is there)\\  | 
    32   Slides: & KEATS (also homework and coursework is there)\\  | 
    33   \end{tabular} | 
    33   \end{tabular} | 
    34   \end{center} | 
    34   \end{center} | 
    35   | 
    35   | 
    36 \end{frame} | 
    36 \end{frame} | 
    40 \begin{frame}[c] | 
    40 \begin{frame}[c] | 
    41 \frametitle{Scala Book, Exams} | 
    41 \frametitle{Scala Book, Exams} | 
    42   | 
    42   | 
    43 \begin{itemize} | 
    43 \begin{itemize} | 
    44 \item \small https://nms.kcl.ac.uk/christian.urban/ProgInScala2ed.pdf\normalsize  | 
    44 \item \small https://nms.kcl.ac.uk/christian.urban/ProgInScala2ed.pdf\normalsize  | 
    45 \item homeworks (written exam 80\%)  | 
    45 \item homework (written exam 80\%)  | 
    46 \item coursework (20\%)\bigskip  | 
    46 \item coursework (20\%)\bigskip  | 
    47 \item short survey at KEATS; to be answered until Sunday      | 
    47 \item short survey at KEATS; to be answered until Sunday      | 
    48 \end{itemize} | 
    48 \end{itemize} | 
    49   | 
    49   | 
    50 \end{frame} | 
    50 \end{frame} | 
   171   | 
   171   | 
   172   | 
   172   | 
   173 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  | 
   173 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  | 
   174 \begin{frame}[c] | 
   174 \begin{frame}[c] | 
   175   | 
   175   | 
   176 We proved partially  | 
   176 We proved  | 
   177   | 
   177   | 
   178 \begin{center} | 
   178 \begin{center} | 
   179 \bl{$nullable(r)$} \;if and only if\;  \bl{$[] \in L(r)$} | 
   179 \bl{$nullable(r)$} \;if and only if\;  \bl{$[] \in L(r)$} | 
   180 \end{center} | 
   180 \end{center} | 
   181   | 
   181   |