The three Vons are Wernher wernher von braun, Von Neumann and Von Carmen.
Werner wernher von braun, one of the pioneers of the space industry in the 20th century. He is the chief designer of the famous V2 rocket. After the failure, America brought him and his design team to America. After moving to the United States, he became the chief designer of NASA's space research and development project and presided over the design of Apollo 4 launch vehicle Saturn 5.
Von Neumann is one of the most important mathematicians in the 20th century. Von Neumann, a Ph.D. student in mathematics at Budapest University, is one of the scientific generalists in the fields of modern computer, game theory, nuclear weapons, biochemical weapons and so on, and is called "the father of modern computer" and "the father of game theory" by later generations.
Von Carmen is one of the greatest scientists in the 20th century. Dr. Qian Xuesen, a famous scientist in China, is his student and is known as "the world-famous authority on engineering mechanics and aviation technology".
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Von Neumann's work can be roughly divided into two periods: before 1940, he mainly studied pure mathematics: he put forward a simple ordinal number theory in mathematical logic and made a new axiomatization of set theory, in which set and class were clearly distinguished; Later, he studied the spectral theory of linear self-adjoint operators on Hilbert space, thus laying the mathematical foundation of quantum mechanics;
From 65438 to 0930, he proved that the average ergodic theorem opened up a new field of ergodic theory; In 1933, he solved Hilbert's fifth problem by using compact groups. In addition, he also made pioneering contributions in measurement theory, lattice theory and continuous geometry. From 1936 to 1943, he cooperated with Murray to establish the operator ring theory, the so-called von Neumann algebra.
After 1940, von Neumann turned to applied mathematics. If his pure mathematical achievements belong to mathematics, then his work in mechanics, economics, numerical analysis and electronic computers belongs to all mankind.
At the beginning of World War II, von Neumann studied the motion of compressible gas, established shock wave theory and theory of turbulence, and developed fluid mechanics. Starting from 1942, he co-authored the book Game Theory and Economic Behavior with Morgenstein, which is a classic work in game theory, making him one of the founders of mathematical economics.