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\title{A Compact Overview of Structured Proofs in Isar/HOL}
\author{Tobias Nipkow\\Institut f{\"u}r Informatik, TU M{\"u}nchen\\
\url{http://www.in.tum.de/~nipkow/}}
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\noindent
This is a very compact introduction to structured proofs in
Isar/HOL, an extension of Isabelle/HOL~\cite{LNCS2283}. A detailled
exposition of this material can be found in Markus Wenzel's PhD
thesis~\cite{Wenzel-PhD} and the Isar reference manual~\cite{Isar-Ref-Man}.
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\paragraph{Acknowledgment}
I am deeply indebted to Markus Wenzel for conceiving Isar. Stefan Berghofer
and Markus Wenzel commented on this document.
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