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\title{Automating Public Announcement Logic and the Wise Men Puzzle in
Isabelle/HOL}
\author{Christoph Benzm\"uller and Sebastian Reiche}
\maketitle

\begin{abstract}
We present a shallow embedding of public announcement logic (PAL) with relativized general knowledge in HOL. We then use PAL to obtain an elegant encoding of the wise men puzzle, which we solve automatically using sledgehammer.
\end{abstract}

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