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 ## I. Predecessors of Quantum Mechanics – Key Mathematicians and Their Contributions
 
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-1. **Leonhard Euler (1748)**  <br>  
+### 1. Leonhard Euler (1748)*  <br>  
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    * Developed the [Euler's Formula](), which links exponential functions to trigonometric functions. It is fundamental in wave mechanics and quantum state representation.