From 22c5b895a4a2ba0ecb97a5c7ccab4b13c42c24e3 Mon Sep 17 00:00:00 2001 From: Josh Chen Date: Mon, 25 May 2020 16:27:53 +0200 Subject: minor --- hott/Nat.thy | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'hott') diff --git a/hott/Nat.thy b/hott/Nat.thy index 4825404..311f2d9 100644 --- a/hott/Nat.thy +++ b/hott/Nat.thy @@ -104,7 +104,7 @@ Lemma (derive) add_comm: proof reduce have "suc (m + n) = suc (n + m)" by (eq ih) intro also have "'' = n + suc m" by (rule add_suc[symmetric]) - finally show "suc (m + n) = n + suc m" by this reduce + finally show "suc (m + n) = n + suc m" by this qed done -- cgit v1.2.3