diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index d032a0e..f14aa8a 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -158,11 +158,12 @@
   },
   "active": "9e7be1904dfd4451",
   "lastOpenFiles": [
-    "Algo/Séminaire/Chapter 4 - A bit of imperative.md",
+    "Algo/Séminaire/Exercices seminaire.md",
+    "Algo/Séminaire/assets/functions-meme.jpg",
     "Algo/Séminaire/Chapter 5 - Recursivity.md",
+    "Algo/Séminaire/Chapter 4 - A bit of imperative.md",
     "Algo/Séminaire/Chapter 3 - Case analysis.md",
     "Algo/Séminaire/assets/unitaire-meme.png",
-    "Algo/Séminaire/Exercices seminaire.md",
     "Algo/Séminaire/Introduction.md",
     "Algo/Séminaire/Chapter 2 - Functions.md",
     "Algo/Séminaire/assets/fact function response.png",
@@ -184,7 +185,6 @@
     "Mathématiques/Séminaire/Logics/Pasted image 20230904101446.png",
     "Mathématiques/Séminaire/Logics",
     "Mathématiques/Séminaire/Logics/Pasted image 20230904101721.png",
-    "Mathématiques/Séminaire/Logics/Pasted image 20230904101453.png",
     "Mathématiques/Séminaire",
     "2023-09-01.md",
     "Algo",
diff --git a/Algo/Séminaire/Chapter 4 - A bit of imperative.md b/Algo/Séminaire/Chapter 4 - A bit of imperative.md
index 21d1740..351d3f9 100644
--- a/Algo/Séminaire/Chapter 4 - A bit of imperative.md	
+++ b/Algo/Séminaire/Chapter 4 - A bit of imperative.md	
@@ -1,5 +1,4 @@
-
-![](https://gitea.louisgallet.fr/lgallet/epicours/raw/branch/main/Algo/S%C3%A9minaire/assets/unitaire-meme.png)
+<center><img src="https://gitea.louisgallet.fr/lgallet/epicours/raw/branch/main/Algo/S%C3%A9minaire/assets/unitaire-meme.png " width=auto height=400 /> </center>
 ## 0.1. Print
 If we want to print something in CAML, we have to use this structure
 
diff --git a/Algo/Séminaire/Chapter 5 - Recursivity.md b/Algo/Séminaire/Chapter 5 - Recursivity.md
index 0affc11..a714262 100644
--- a/Algo/Séminaire/Chapter 5 - Recursivity.md	
+++ b/Algo/Séminaire/Chapter 5 - Recursivity.md	
@@ -1,4 +1,3 @@
-
 <center><img src="https://gitea.louisgallet.fr/lgallet/epicours/raw/branch/main/Algo/S%C3%A9minaire/assets/recursivite-meme.png " width=512 height=auto /> </center>
 
 ### 5.1. Simple functions
@@ -79,13 +78,13 @@ let rec fibonacci n =
 	else
 		fibonacci(n-1) + fibonacci(n-2);;
 
-let add n = 
+let rec odd n = 
 	if n = 0 then
 		false
 	else
 		even (n-1);;
 
-let even n =
+let rec even n =
 	if n = 0 then
 		true
 	else
diff --git a/Algo/Séminaire/assets/functions-meme.jpg b/Algo/Séminaire/assets/functions-meme.jpg
new file mode 100644
index 0000000..91d5ce4
Binary files /dev/null and b/Algo/Séminaire/assets/functions-meme.jpg differ