Update README.md

Signed-off-by: Fabiana 🚀  Campanari <113218619+FabianaCampanari@users.noreply.github.com>

Author: FabianaCampanari

README.md

@@ -78,9 +78,14 @@ Feel free to explore, contribute, and share your insights!
 
 ## Mid-20th Century – Foundations for Quantum Information
 
-1. **John von Neumann (1932)**
+1. **John von Neumann (1932)**  📐
    * Formalized the mathematical framework of quantum mechanics and introduced operator theory.
 
+   - **Explanation**: Von Neumann established the mathematical foundation of quantum mechanics, including measurement theory and the concept of operators.
+     
+   - **Contribution**: Formalized quantum theory, especially the description of quantum states and the mathematical interpretation of wave function collapse.
+
+  
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 2. **Richard Feynman (1981)** 💻