changeset 65800 | d53be2202859 |
parent 65030 | 7fd4130cd0a4 |
child 67399 | eab6ce8368fa |
--- a/src/HOL/Library/Cancellation.thy Wed May 10 19:02:06 2017 +0200 +++ b/src/HOL/Library/Cancellation.thy Wed May 10 19:11:20 2017 +0200 @@ -39,7 +39,7 @@ by (induction n) auto lemma iterate_add_1: \<open>iterate_add n 1 = of_nat n\<close> - by (induction n) auto + using iterate_add_Numeral1 by auto lemma iterate_add_eq_add_iff1: \<open>i \<le> j \<Longrightarrow> (iterate_add j u + m = iterate_add i u + n) = (iterate_add (j - i) u + m = n)\<close>