From: jim <jim@web>
Date: Sun, 8 Feb 2015 01:09:50 +0000 (-0500)
Subject: add Church encodings
X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=commitdiff_plain;h=de108826480c232b504d1fa0583c4e2e140117a6;hp=4f33abf0dbdcd569367bd26d1c0f1ece6ea0629d

add Church encodings
---

diff --git a/topics/_assignment2.mdwn b/topics/_assignment2.mdwn
index e223cd1c..bacd676e 100644
--- a/topics/_assignment2.mdwn
+++ b/topics/_assignment2.mdwn
@@ -163,7 +163,10 @@ Numbers
 
 26. Given that we've agreed to Church's encoding of the numbers:
 
-    BLAH
+    <code>0 &equiv; \f z. z  
+    <code>1 &equiv; \f z. f z  
+    <code>2 &equiv; \f z. f (f z)  
+    <code>3 &equiv; \f z. f (f (f z))  
+    <code>...</code>
 
     How would you express the `succ` function in the Lambda Calculus?
-