1903–1957 · mathematics, computer science, game theory, quantum mechanics
John von Neumann was a Hungarian-American mathematician, physicist, computer scientist, and polymath who made major contributions to mathematics, quantum mechanics, game theory, and early computer architecture. He played a key role in the Manhattan Project and pioneered the von Neumann architecture, which became the foundation for modern digital computers. His work spanned pure and applied mathematics, economics, and nuclear strategy.