From fdc741933683621ccad260cf9b8c985d234f48f3 Mon Sep 17 00:00:00 2001 From: Jim Pryor Date: Sun, 19 Sep 2010 14:09:53 -0400 Subject: [PATCH 1/1] week2 tweaks Signed-off-by: Jim Pryor --- week2.mdwn | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/week2.mdwn b/week2.mdwn index ebc59593..95b1bb98 100644 --- a/week2.mdwn +++ b/week2.mdwn @@ -35,9 +35,10 @@ Another way to think of it is to identify expressions not with particular alphab A third way to think is to identify the lambda formula not with classes of alphabetic sequences, but rather with abstract structures that we might draw like this: -
λ ... `___` ...
+
λ
+	... ___ ...
 ^      |
-|`______`|
+|______|
 
Here there are no bound variables, but there are *bound positions*. We can regard formula like (a) and (b) as just helpfully readable ways to designate these abstract structures. -- 2.11.0