From: jim Date: Fri, 20 Feb 2015 18:15:44 +0000 (-0500) Subject: caps X-Git-Url: http://lambda.jimpryor.net/git/gitweb.cgi?p=lambda.git;a=commitdiff_plain;h=5c234a526ad9ecc96ae9d17b6f74de53a0354444 caps --- diff --git a/exercises/_assignment4.mdwn b/exercises/_assignment4.mdwn index fd9816db..33c7e779 100644 --- a/exercises/_assignment4.mdwn +++ b/exercises/_assignment4.mdwn @@ -96,8 +96,8 @@ addition, and exponentiation is defined in terms of multiplication. 8. Find a fixed point `ξ` for the successor function. Prove it's a fixed point, i.e., demonstrate that `succ ξ <~~> ξ`. - We've had surprising success embedding normal arithmetic in the lambda -calculus, modeling the natural numbers, addition, multiplication, and + We've had surprising success embedding normal arithmetic in the Lambda +Calculus, modeling the natural numbers, addition, multiplication, and so on. But one thing that some versions of arithmetic supply is a notion of infinity, which we'll write as `inf`. This object usually satisfies the following constraints, for any finite natural number `n`: