X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=blobdiff_plain;f=week1.mdwn;h=5d3687046d2ef02cbf94d6ff0c83790a5f51a7a6;hp=5299e29780b16c4b94f0ee16ef4ce45d6d2d90e1;hb=599ae71cb186e4db700f0371c7caba2e80a66332;hpb=3882862720e3f054bf53b0ddbc226da2f17eb2fb;ds=sidebyside

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@@ -14,6 +14,7 @@ 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.)