diff --git a/Concurrent Systems/notes/12 - CCS (che non so cosa voglia dire).md b/Concurrent Systems/notes/12 - CCS (che non so cosa voglia dire).md
index 5c3d542..fdff64a 100644
--- a/Concurrent Systems/notes/12 - CCS (che non so cosa voglia dire).md	
+++ b/Concurrent Systems/notes/12 - CCS (che non so cosa voglia dire).md	
@@ -53,27 +53,13 @@ $$\frac{P \xrightarrow{\alpha} P'}{P \setminus a \xrightarrow{\alpha} P' \setmin
 > If process `P` can do action `α` and it’s **not** the hidden action (`a` or `ā`), then `P \ a` can also do it, and the resulting process remains restricted.
 
 ##### 4. **Parallel Composition – Independent Actions**
-$$\frac{P_1 \xrightarrow{\alpha} P_1'}{P_1 \mid P_2 \xrightarrow{\alpha} P_1' \mid P_2}$$
-$$\frac{P_2 \xrightarrow{\alpha} P_2'}{P_1 \mid P_2 \xrightarrow{\alpha} P_1 \mid P_2'}$$
 There are three rules here for different situations in `P₁ | P₂`.
-
----
-
-#### a. **Left process makes a move:**
-
-**`P₁ ⟶ᵅ P₁'`  
-———————————  
-`P₁ | P₂ ⟶ᵅ P₁' | P₂`**
-
+###### a. **Left process makes a move:**
+$$\frac{P_1 \xrightarrow{\alpha} P_1'}{P_1 \mid P_2 \xrightarrow{\alpha} P_1' \mid P_2}$$
 > If `P₁` makes a move alone, the parallel composition can reflect it.
 
----
-
-#### b. **Right process makes a move:**
-
-**`P₂ ⟶ᵅ P₂'`  
-———————————  
-`P₁ | P₂ ⟶ᵅ P₁ | P₂'`**
+###### b. **Right process makes a move:**
+$$\frac{P_2 \xrightarrow{\alpha} P_2'}{P_1 \mid P_2 \xrightarrow{\alpha} P_1 \mid P_2'}$$
 
 > Symmetrical to the previous: `P₂` makes the move.