From 4f6befa912da187bb5f7ffaf2504dc398a37cbda Mon Sep 17 00:00:00 2001
From: Oliver Kennedy <okennedy@xthemage.net>
Date: Fri, 26 Apr 2019 10:48:39 -0400
Subject: [PATCH] slide link

---
 src/teaching/cse-562/2019sp/index.erb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/teaching/cse-562/2019sp/index.erb b/src/teaching/cse-562/2019sp/index.erb
index c4946820..c813b18f 100644
--- a/src/teaching/cse-562/2019sp/index.erb
+++ b/src/teaching/cse-562/2019sp/index.erb
@@ -186,7 +186,8 @@ schedule:
       slides: "slide/2019-04-24-Provenance.html"
   - date: "Apr 26"
     topic: "Provenance Semirings"
-    textbook: "Ch. 23.4"
+    materials:
+      slides: "slide/2019-04-26-ProvenanceSemirings.html"
   - date: "Apr 29"
     topic: "Implementing Provenance Queries"
     textbook: "Ch. 23.5"