diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index d8b6a8a..69c3e6f 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -213,6 +213,7 @@
   "lastOpenFiles": [
     "Concurrent Systems/slides/class 11.pdf",
     "Concurrent Systems/notes/11 - LTSs and Bisimulation.md",
+    "Pasted image 20250408094749.png",
     "Pasted image 20250408093840.png",
     "Pasted image 20250408092853.png",
     "Pasted image 20250408091924.png",
@@ -254,7 +255,6 @@
     "Concurrent Systems/notes/images/Pasted image 20250401083747.png",
     "Concurrent Systems/notes/images/Pasted image 20250401092557.png",
     "Concurrent Systems/slides/class 6.pdf",
-    "Concurrent Systems/notes/images/Pasted image 20250325090735.png",
     "Concurrent Systems/slides/class 8.pdf",
     "Senza nome.canvas"
   ]
diff --git a/Concurrent Systems/notes/11 - LTSs and Bisimulation.md b/Concurrent Systems/notes/11 - LTSs and Bisimulation.md
index 613e6a5..6bc6280 100644
--- a/Concurrent Systems/notes/11 - LTSs and Bisimulation.md	
+++ b/Concurrent Systems/notes/11 - LTSs and Bisimulation.md	
@@ -48,4 +48,9 @@ A binary relation S ⊆ Q×Q is a simulation if and only if
 We say that p is simulated by q if there exists a simulation S such that $$(p,q) ∈ S$$
 We say that S is a bisimulation if both S and S−1 are simulations (where $$S^{-1} = \{(p,q) : (q,p) ∈ S\}$$)
 
-Two states q and p are bisimulation equivalent (or, simply, bisimilar) if there exists a bisimulation S such that (p, q) ∈ S; we shall then write p ∼ q.
\ No newline at end of file
+Two states q and p are bisimulation equivalent (or, simply, bisimilar) if there exists a bisimulation S such that (p, q) ∈ S; we shall then write p ∼ q.
+
+![](../../Pasted%20image%2020250408094749.png)
+q0 is simulated by p0; this is shown by the following simulation relation: $$S = \{(q0,p0), (q1,p1), (q2,p1), (q3,p2), (q4,p3)\}$$
+To let p0 be simulated by q0, we should have that p1 is simulated by q1 or q2.
+If S contained one among (p1,q1) or (p1,q2), then it would not be a simulation: indeed, p1 can perform both a c (whereas q1 cannot) and a b (whereas q2 cannot)
\ No newline at end of file
diff --git a/Pasted image 20250408094749.png b/Pasted image 20250408094749.png
new file mode 100644
index 0000000..569d0c1
Binary files /dev/null and b/Pasted image 20250408094749.png differ