From 26c6874795933a9609ac336db9bf19e18ac357de Mon Sep 17 00:00:00 2001
From: jim <jim@web>
Date: Fri, 20 Feb 2015 13:29:40 -0500
Subject: [PATCH] markup

---
 exercises/_assignment4.mdwn | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/exercises/_assignment4.mdwn b/exercises/_assignment4.mdwn
index 38e3180f..f5e22c75 100644
--- a/exercises/_assignment4.mdwn
+++ b/exercises/_assignment4.mdwn
@@ -107,7 +107,7 @@ satisfies the following constraints, for any finite natural number `n`:
         n ^ inf == inf
         leq n inf == true
 
-    (Note, though, that with *some* notions of infinite numbers, like [[!wiki ordinal numers]], operations like `+` and `*` are defined in such a way that `inf + n` is different from `n + inf`, and does exceed `inf`.)
+    (Note, though, that with *some* notions of infinite numbers, like [[!wikipedia ordinal numbers]], operations like `+` and `*` are defined in such a way that `inf + n` is different from `n + inf`, and does exceed `inf`.)
 
 9. Prove that `add ξ 1 <~~> ξ`, where `ξ` is the fixed
 point you found in (1).  What about `add ξ 2 <~~> ξ`?  
-- 
2.11.0