merged
authorpaulson
Tue, 04 Aug 2020 11:45:03 +0100
changeset 72092 3f8e6c0166ac
parent 72080 2030eacf3a72 (diff)
parent 72091 b6065cbbf5e2 (current diff)
child 72093 6a2f43901350
merged
--- a/src/HOL/Data_Structures/Tree2.thy	Mon Aug 03 11:46:19 2020 +0100
+++ b/src/HOL/Data_Structures/Tree2.thy	Tue Aug 04 11:45:03 2020 +0100
@@ -36,4 +36,7 @@
 lemma set_inorder[simp]: "set (inorder t) = set_tree t"
 by (induction t) auto
 
+lemma length_inorder[simp]: "length (inorder t) = size t"
+by (induction t) auto
+
 end