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\begin{document}
\title{IMP --- A {\tt WHILE}-language and its Semantics}
\author{Gerwin Klein, Heiko Loetzbeyer, Tobias Nipkow, Robert Sandner}
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\begin{abstract}\noindent
The denotational, operational, and axiomatic semantics, a verification
condition generator, and all the necessary soundness, completeness and
equivalence proofs. Essentially a formalization of the first 100 pages of
\cite{Winskel}.
An eminently readable description of this theory is found in \cite{Nipkow}.
See also HOLCF/IMP for a denotational semantics.
\end{abstract}
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