doc-src/Tutorial/basics.tex
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    42 automatically visible. To avoid name clashes, identifiers can be qualified by
    42 automatically visible. To avoid name clashes, identifiers can be qualified by
    43 theory names as in \texttt{T.f} and \texttt{B.f}. HOL's theory library is
    43 theory names as in \texttt{T.f} and \texttt{B.f}. HOL's theory library is
    44 available online at
    44 available online at
    45 
    45 
    46 \begin{center}\small
    46 \begin{center}\small
    47   \begin{tabular}{l}
    47     \url{http://isabelle.in.tum.de/library/}
    48     \url{http://www.cl.cam.ac.uk/Research/HVG/Isabelle/library/} \\
       
    49     \url{http://isabelle.in.tum.de/library/} \\
       
    50   \end{tabular}
       
    51 \end{center}
    48 \end{center}
    52 
    49 
    53 and is recommended browsing.
    50 and is recommended browsing.
    54 \begin{warn}
    51 \begin{warn}
    55   HOL contains a theory \ttindexbold{Main}, the union of all the basic
    52   HOL contains a theory \ttindexbold{Main}, the union of all the basic