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Merge pull request #53 from cpitclaudel/patch-1

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Change "there exists valuation" to "there exists a valuation"
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Adam Chlipala 2021-03-16 15:49:30 -04:00 committed by GitHub
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frap_book.tex
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@ -2032,7 +2032,7 @@ The intuition behind the rules may come best from working out an example.
\newcommand{\smallsteps}[2]{#1 \to^* #2}
\begin{theorem}
There exists valuation $v$ such that $\smallsteps{(\mupd{\mempty}{\mathtt{input}}{2}, \mathtt{factorial})}{(v, \skipe)}$ and $\msel{v}{\mathtt{output}} = 2$.
There exists a valuation $v$ such that $\smallsteps{(\mupd{\mempty}{\mathtt{input}}{2}, \mathtt{factorial})}{(v, \skipe)}$ and $\msel{v}{\mathtt{output}} = 2$.
\end{theorem}
\begin{proof}