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 ## Predecessors of Quantum Mechanics
 
 ### Leonhard Euler (1748)
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 Leonhard Euler, one of the most significant mathematicians in history, contributed foundational mathematical principles that would later support the development of quantum mechanics. His work in functions and complex numbers laid the groundwork for modern physics.
 
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      Euler's formula is essential for describing quantum wavefunctions and visualizing oscillations in the complex plane.
 
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