diff -r 0cce1aee0fb2 -r 222333d2bdc2 thys2/SizeBound4.thy
--- a/thys2/SizeBound4.thy	Mon Feb 21 23:38:26 2022 +0000
+++ b/thys2/SizeBound4.thy	Wed Mar 02 11:43:41 2022 +0000
@@ -1019,7 +1019,7 @@
     apply(simp only: map_append)
     apply(simp only: map_single)
     apply(rule rs_in_rstar)
-    thm rrewrite_srewrite.intros
+    thm rrewrite_srewrite.intros 
     apply(rule rrewrite_srewrite.ss6)
     using as
     apply(auto simp add: der_correctness Der_def)