X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=content.mdwn;h=6b1153721e9d03a8246bed8de0fd654c53eb3ea1;hp=a71f620d2fa06fe15ba134c92ec49181466db78d;hb=7936567be1fea69bb7e1bb299bd3d1616b6e2dcc;hpb=7616c041a9fc3d7d4726e836d4a170c471129ab6

diff --git a/content.mdwn b/content.mdwn
index a71f620d..6b115372 100644
--- a/content.mdwn
+++ b/content.mdwn
@@ -14,7 +14,7 @@ week in which they were introduced.
     *   [["Rosetta Stone" page #1 for Kaupulet, Scheme, OCaml, Haskell|rosetta1]]
     *   Offsite links for help on [[learning Scheme]], [[OCaml|learning OCaml]], and [[Haskell|learning Haskell]]
     *   [[List Comprehensions|topics/week3 lists#comprehensions]]
-    *   Usefulness of `()`
+    *   [[Unit and its usefulness|topics/week3 unit]]
     *   More tips on using Scheme
 
 *   Order, "static versus dynamic"
@@ -32,10 +32,12 @@ week in which they were introduced.
         *   [[Tuples|topics/week2 encodings#tuples]]
         *   [[Lists|topics/week2 encodings#lists]], v1 (as right-folds)
         *   [[Numbers|topics/week2 encodings#numbers]], v1 ("Church's encoding")
+        *   [[Arithmetic with Church numbers|topics/week3_church_arithmetic]]
         *   [[How to get the `tail` of v1 lists?|topics/week3 lists#tails]]
-        *   Some other list encodings
-        *   Arithmetic with Church numbers
+        *   [[Some other list encodings|topics/week3 lists#other-lists]]
     *    Reduction Strategies and Normal Forms
+    *   [[Fixed point combinators|topics/week4_fixed_point_combinators]]
+    *   [[More about fixed point combinators|topics/week4_more_about_fixed_point_combinators]]
 
 
 *    [[Combinatory Logic|topics/week3 combinatory logic]]
@@ -58,22 +60,24 @@ Week 2:
 *   [[Introduction to the Lambda Calculus|topics/week2 lambda intro]]
 *   [[Advanced notes on the Lambda Calculus|topics/week2 lambda advanced]]
 *   [[Encoding Booleans, Tuples, Lists, and Numbers|topics/week2 encodings]]
-*   [[Homework for week 2|exercises/assignment2]]
+*   [[Homework for week 2|exercises/assignment2]] ([[Answers|exercises/assignment2_answers]])
 
 Week 3:
 
-*We will continue to develop these notes over the next few days. Expect some of the notes already posted to be expanded, and more notes to appear.*
+*These notes were developed over the course of the week. It'd be a good idea to review them again now, to be sure you've read all the content.*
 
-*   Arithmetic with Church numbers
-*   [[What is computation?|topics/week3_what_is_computation]]
+*   [[Arithmetic with Church numbers|topics/week3_church_arithmetic]]
 *   [[More on Lists|topics/week3 lists]]
-Introduces list comprehensions, discusses how to get the `tail` of lists in the Lambda Calculus (and will discuss some other list encodings)
+Introduces list comprehensions, discusses how to get the `tail` of lists in the Lambda Calculus, and some new list encodings
+*   [[What is computation?|topics/week3_what_is_computation]]
+*   Reduction Strategies and Normal Forms (will try to post soon)
+*   [[Unit and its usefulness|topics/week3 unit]]
 *   [[Combinatory Logic|topics/week3 combinatory logic]]
-*   Reduction Strategies and Normal Forms
-*   Usefulness of `()`
-*   [[Homework for week 3|exercises/assignment3]]
-
-
+*   [[Homework for week 3|exercises/assignment3]] ([[Answers|exercises/assignment3_answers]])
 
-*More coming, please wait...*
+Week 4:
 
+*   [[Fixed point combinators|topics/week4_fixed_point_combinators]]
+*   [[More about fixed point combinators|topics/week4_more_about_fixed_point_combinators]]
+*   Towards types (in progress)
+*   [[Homework for week 4|exercises/assignment4]]