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| -rw-r--r-- | lambda-calculus.html.markdown | 2 | 
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| diff --git a/lambda-calculus.html.markdown b/lambda-calculus.html.markdown index 53a7a7cd..958dd746 100644 --- a/lambda-calculus.html.markdown +++ b/lambda-calculus.html.markdown @@ -131,7 +131,7 @@ We can convert an expression in the lambda calculus to an expression  in the SKI combinator calculus:  1. `λx.x = I` -2. `λx.c = Kc` +2. `λx.c = Kc` provided that `x` does not occur free in `c`  3. `λx.(y z) = S (λx.y) (λx.z)`  Take the church number 2 for example: | 
