diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 251b622..6581465 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -213,6 +213,7 @@
   },
   "active": "56150e6df7869900",
   "lastOpenFiles": [
+    "Pasted image 20250428085837.png",
     "Concurrent Systems/slides/class 13.pdf",
     "Concurrent Systems/notes/13 - Weak Bisimilarity.md",
     "Pasted image 20250428085410.png",
diff --git a/Concurrent Systems/notes/13 - Weak Bisimilarity.md b/Concurrent Systems/notes/13 - Weak Bisimilarity.md
index da46ebb..bed02ee 100644
--- a/Concurrent Systems/notes/13 - Weak Bisimilarity.md	
+++ b/Concurrent Systems/notes/13 - Weak Bisimilarity.md	
@@ -76,4 +76,12 @@ There is only one special and only one general machine that the workers have to
 where rg and rs are used to require the general/special machine, lg and ls are used to leave the general/special machine, and S and G implement a semaphore on the two different machines.
 
 The resulting system is given by:
-$$Workers \triangleq (W|W|G|S) \setminus_{\{rg,rs,lg,ls  \}}$$
\ No newline at end of file
+$$Workers \triangleq (W|W|G|S) \setminus_{\{rg,rs,lg,ls  \}}$$
+We now want to show that:
+$$Factory \approx Workers$$
+i.e., that the specification and the implementation of the factory behave the same (apart from internal actions).
+
+Let N denote {rg,rs,lg,ls} and x,y ∊ {E,M,D}
+We can prove that the following relation is a weak bisimulation:
+![](../../Pasted%20image%2020250428085837.png)
+
diff --git a/Pasted image 20250428085837.png b/Pasted image 20250428085837.png
new file mode 100644
index 0000000..40c2ffa
Binary files /dev/null and b/Pasted image 20250428085837.png differ