diff -r ce69de572bca -r 0229ce6735f6 src/HOL/Arith.ML
--- a/src/HOL/Arith.ML	Tue Jul 27 22:03:24 1999 +0200
+++ b/src/HOL/Arith.ML	Tue Jul 27 22:04:30 1999 +0200
@@ -1107,7 +1107,7 @@
 qed "diff_less";
 
 
-(** (Anti)Monotonicity of subtraction -- by Stefan Merz **)
+(** (Anti)Monotonicity of subtraction -- by Stephan Merz **)
 
 (* Monotonicity of subtraction in first argument *)
 Goal "m <= (n::nat) ==> (m-l) <= (n-l)";