diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 4e4b1df..459955b 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,7 +13,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "Algo/Séminaire/Chapter 1 - CAML basics.md",
+                "file": "Algo/Séminaire/Chapter 3 - Case analysis.md",
                 "mode": "source",
                 "source": false
               }
@@ -85,7 +85,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "Algo/Séminaire/Chapter 1 - CAML basics.md",
+                "file": "Algo/Séminaire/Chapter 3 - Case analysis.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -102,7 +102,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "Algo/Séminaire/Chapter 1 - CAML basics.md",
+                "file": "Algo/Séminaire/Chapter 3 - Case analysis.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -125,7 +125,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "Algo/Séminaire/Chapter 1 - CAML basics.md"
+                "file": "Algo/Séminaire/Chapter 3 - Case analysis.md"
               }
             }
           }
@@ -149,8 +149,8 @@
   "active": "bdba25946b821d06",
   "lastOpenFiles": [
     "Algo/Séminaire/Chapter 2 - Functions.md",
-    "Algo/Séminaire/Introduction.md",
     "Algo/Séminaire/Chapter 1 - CAML basics.md",
+    "Algo/Séminaire/Introduction.md",
     "Algo/Séminaire/Chapter 3 - Case analysis.md",
     "Algo/Séminaire/Exercices seminaire.md",
     "Algo/Séminaire/assets/69E2987C-209A-48CD-8964-5A60462966E5.jpg",
diff --git a/Algo/Séminaire/Chapter 3 - Case analysis.md b/Algo/Séminaire/Chapter 3 - Case analysis.md
index c5358b4..70de01b 100644
--- a/Algo/Séminaire/Chapter 3 - Case analysis.md	
+++ b/Algo/Séminaire/Chapter 3 - Case analysis.md	
@@ -113,7 +113,7 @@ val f : int -> int = <fun>
 
 ### "Or" filter
 ```Ocaml
-let f x match x with 
+# let f x match x with 
 	0 | 20 -> 18
 	| 1 | 11 | 12 -> 24
 	|_ -> x * x ;;
@@ -121,7 +121,7 @@ let f x match x with
 
 ### Guarded filters
 ```Ocaml
-let sign x = match x with 
+# let sign x = match x with 
 	0 -> 0
 	| y when y < 0 -> -1
 	| _ -> 1