diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 9fcd98a..6d7a1d8 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -216,6 +216,10 @@
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+    "SS2026/Quantum Computing/6. Composite Systems/Anhänge/Pasted image 20260729215146.png",
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     "SS2026/Quantum Computing/Introduction to Quantum Computing.md",
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@@ -243,7 +245,6 @@
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-    "SS2026/Datenbanken und Informationssysteme/2. ER-Modell/Entity-Relationship-Modell.md"
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diff --git a/SS2026/Quantum Computing/6. Composite Systems/Composite Systems.md b/SS2026/Quantum Computing/6. Composite Systems/Composite Systems.md
index e69de29..19f7a30 100644
--- a/SS2026/Quantum Computing/6. Composite Systems/Composite Systems.md	
+++ b/SS2026/Quantum Computing/6. Composite Systems/Composite Systems.md	
@@ -0,0 +1,14 @@
+Compose different systems with each other
+
+## Constructing composite systems
+
+![[Pasted image 20260729215146.png]]
+
+This definition applies to probabilistic and quantum systems.
+
+Example:
+
+![[Pasted image 20260729215759.png]]
+
+![[Pasted image 20260729215837.png]]
+