diff --git a/.obsidian/app.json b/.obsidian/app.json
index 2921389..ede4d89 100644
--- a/.obsidian/app.json
+++ b/.obsidian/app.json
@@ -2,7 +2,7 @@
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-    "pageSize": "Letter",
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diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 48df8ed..a28ffff 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -195,17 +195,17 @@
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+    "Concurrent Systems/notes/2 - Fast mutex by Lamport.md",
     "Concurrent Systems/notes/1b - Peterson algorithm.md",
+    "Concurrent Systems/notes/Untitled.pdf",
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-    "Concurrent Systems/notes/4c - Dining Philosophers.md",
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     "Concurrent Systems/notes/3a - Hardware primitives & Lamport Bakery algorithm.md",
     "Concurrent Systems/notes/5 - Software Transactional Memory.md",
-    "Concurrent Systems/notes/2b - Round Robin algorithm.md",
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