From bc25f2d5215152fe943109b090abcdccc5357c0b Mon Sep 17 00:00:00 2001
From: Thomas Baruchel <baruchel@gmx.com>
Date: Wed, 1 Nov 2023 19:13:41 +0100
Subject: [PATCH] Update

---
 src/subsequences.v | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/subsequences.v b/src/subsequences.v
index bd9af72..1e2aa95 100644
--- a/src/subsequences.v
+++ b/src/subsequences.v
@@ -311,7 +311,7 @@ Proof.
   assert ({ subsequence2 l s } + { ~ subsequence2 l s }).
   apply subsequence2_dec. assumption. destruct H0.
   apply subsequence_eq_def_2 in s0. left. assumption.
-  right. unfold not. intro I.
+  right. intro I.
   apply subsequence_eq_def_3 in I.
   apply subsequence_eq_def_1 in I.
   apply n in I. contradiction I.
@@ -326,7 +326,7 @@ Proof.
   assert ({ subsequence3 l s } + { ~ subsequence3 l s }).
   apply subsequence3_dec. assumption. destruct H0.
   apply subsequence_eq_def_3 in s0. left. assumption.
-  right. unfold not. intro I.
+  right. intro I.
   apply subsequence_eq_def_1 in I.
   apply subsequence_eq_def_2 in I.
   apply n in I. contradiction I.