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@@ -70,8 +70,6 @@ Examples of expressions:
 	(x (\x x))
 	((\x (x x)) (\x (x x)))
 
->	 
-
 The lambda calculus has an associated proof theory. For now, we can regard the proof theory as having just one rule, called the rule of **beta-reduction** or "beta-contraction". Suppose you have some expression of the form:
 
 	((\a M) N)