X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=week1.mdwn;h=a5e697a5026751b9fb6b261f657cd2f91f69c99a;hp=9a83861abe305f5d4485d7dc7a7c8e9be24fad8b;hb=aa82fa84a083b7b90862f5f4c368f07dd62ae717;hpb=2a3a4803ddfca1692327ab4577fb886139bfc1e7

diff --git a/week1.mdwn b/week1.mdwn
index 9a83861a..a5e697a5 100644
--- a/week1.mdwn
+++ b/week1.mdwn
@@ -57,22 +57,20 @@ We'll tend to write <code>(&lambda;a M)</code> as just `(\a M)`, so we don't hav
 <strong>Application</strong>: <code>(M N)</code>
 </blockquote>
 
-Some authors reserve the term "term" for just variables and abstracts. We won't participate in that convention; we'll probably just say "term" and "expression" indiscriminately for expressions of any of these three forms.
+Some authors reserve the term "term" for just variables and abstracts. We won't *participate* in that convention; we'll probably just say "term" and "expression" indiscriminately for expressions of any of these three forms.
 
 Examples of expressions:
 
 	x
 	(y x)
 	(x x)
-	(\x y)
-	(\x x)
-	(\x (\y x))
-	(x (\x x))
-	((\x (x x)) (\x (x x)))
-
->	&nbsp;
+	(_x y)
+	(_x x)
+	(_x (_y x))
+	(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:
+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)