edits

[lambda.git] / week1.mdwn

diff --git a/week1.mdwn b/week1.mdwn
index b1df1ad..4981c1a 100644 (file)
--- a/week1.mdwn
+++ b/week1.mdwn
@@ -10,14 +10,7 @@ Sometimes these notes will expand on things mentioned only briefly in class, or
 Basics of Lambda Calculus
 =========================
 
-See also:
-
-*      [Chris Barker's Lambda Tutorial](http://homepages.nyu.edu/~cb125/Lambda)
-*      [Lambda Animator](http://thyer.name/lambda-animator/)
-*      [Penn lambda calculator](http://www.ling.upenn.edu/lambda/) Pedagogical software developed by Lucas Champollion, Josh Tauberer and Maribel Romero.  Linguistically oriented. 
-*      MORE
-
-The lambda calculus we'll be focusing on for the first part of the course has no types. (Some prefer to say it instead has a single type---but if you say that, you have to say that functions from this type to this type also belong to this type. Which is weird.)
+The lambda calculus we'll be focusing on for the first part of the course has no types. (Some prefer to say it instead has a single type---but if you say that, you have to say that functions from this type to this type also belong to this type. Which is weird... In fact, though, such types are studied, under the name "recursive type." More about these later in the seminar.)
 
 Here is its syntax:
 
@@ -362,9 +355,7 @@ Rosetta Stone
 
 Here's how it looks to say the same thing in various of these languages.
 
-The following site may be useful; it lets you run a Scheme interpreter inside your web browser:
-
-*      [Try Scheme in your web browser](http://tryscheme.sourceforge.net/)
+The following site may be useful; it lets you run a Scheme interpreter inside your web browser: [Try Scheme in your web browser](http://tryscheme.sourceforge.net/). See also our links about [[learning Scheme]] and [[learning OCaml]].