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Merge pull request #61 from yanok/patch-1

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Fix typo in substitution definition
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Stephen Diehl 2015-04-04 08:30:01 -04:00
commit 0b3825e7ee
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003_lambda_calculus.md
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@ -230,7 +230,7 @@ $$
& [x/a] y &=& \ y & \text{if}\ x\neq y\\
& [x/a]ee' &=& \ ([x/a]e)([x/a]e')\\
& [x/a]\lambda x.e &=& \ \lambda x.e\\
& [x/a]\lambda y.e &=& \ \lambda y.[x/a]e & \text{if}\ x \neq y\ \text{and}\ y \notin\FV{e}
& [x/a]\lambda y.e &=& \ \lambda y.[x/a]e & \text{if}\ x \neq y\ \text{and}\ y \notin\FV{a}
\end{aligned}
$$