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\newcommand{\isasymSKIP}{\CMD{skip}}
\newcommand{\isasymASSN}{\CMD{:=}}
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\newcommand{\isasymIF}{\CMD{if}}
\newcommand{\isasymTHEN}{\CMD{then}}
\newcommand{\isasymELSE}{\CMD{else}}
\newcommand{\isasymWHILE}{\CMD{while}}
\newcommand{\isasymDO}{\CMD{do}}

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\begin{document}

\title{IMP --- A {\tt WHILE}-language and two semantics}
\author{Heiko Loetzbeyer and Robert Sandner}
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\begin{abstract}\noindent
  The formalization of the denotational and operational semantics of a simple
  while-language together with an equivalence proof between the two semantics.
  The whole development essentially formalizes/transcribes chapters 2 and 5 of
  \cite{Winskel}.  A much extended version of this development is found in
  HOL/IMP of the Isabelle distribution.
\end{abstract}

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