From 776f10940dd36ca975396a776a5cd2d03fd4a0e5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marko=20Dimja=C5=A1evi=C4=87?= <marko@dimjasevic.net>
Date: Mon, 13 Jan 2020 10:45:46 +0100
Subject: [PATCH] Properties: fix the inductive hypothesis for lambda
abstraction in the description of the proof of subst
---
src/plfa/part2/Properties.lagda.md | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/plfa/part2/Properties.lagda.md b/src/plfa/part2/Properties.lagda.md
index c6705f5b..072368a2 100644
--- a/src/plfa/part2/Properties.lagda.md
+++ b/src/plfa/part2/Properties.lagda.md
@@ -742,8 +742,8 @@ Now that naming is resolved, let's unpack the first three cases:
∅ ⊢ V ⦂ B
Γ , x ⦂ A , y ⦂ B ⊢ N ⦂ C
- ------------------------------------
- Γ , x ⦂ A , y ⦂ B ⊢ N [ y := V ] ⦂ C
+ ----------------------------
+ Γ , x ⦂ A ⊢ N [ y := V ] ⦂ C
The typing rule for abstractions then yields the required conclusion.