--- a/thys/Re.thy Mon Feb 11 23:18:05 2019 +0000
+++ b/thys/Re.thy Sun Feb 17 22:15:06 2019 +0000
@@ -5,7 +5,7 @@
section {* Sequential Composition of Sets *}
-m
+
definition
Sequ :: "string set \<Rightarrow> string set \<Rightarrow> string set" ("_ ;; _" [100,100] 100)
where