diff --git a/lectures/lecture-n-1/img/sets.svg b/lectures/lecture-n-1/img/sets.svg
index ae456a4..0a72c23 100644
--- a/lectures/lecture-n-1/img/sets.svg
+++ b/lectures/lecture-n-1/img/sets.svg
@@ -1 +1 @@
-
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+
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