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Typo fix (#17)

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Adam Chlipala 2017-02-21 08:54:42 -05:00
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commit 392c995970
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frap_book.tex
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@ -424,7 +424,7 @@ For example, recall that our definition of expression size included this clause.
\end{eqnarray*}
Now imagine that we are trying to prove this formula.
$$\size{\mathsf{Plus}(e, \mathsf{Const}(7))} = 2 + \size{e}$$
We may apply the defining equation to rewrite into a different formula, where we have essential pushed the definition of $\size{\cdot}$ through the $\mathsf{Plus}$.
We may apply the defining equation to rewrite into a different formula, where we have essentially pushed the definition of $\size{\cdot}$ through the $\mathsf{Plus}$.
$$1 + \size{e} + \size{\mathsf{Const}(7)} = 2 + \size{e}$$
Another application of a different defining equation, this time for $\mathsf{Const}$, takes us to here.
$$1 + \size{e} + 1 = 2 + \size{e}$$