There are many stories of mathematicians. Here is a story of a famous mathematician: John Vance was a mathematician and one of the founders of computer science. He was born and raised in New York City in the early 20th century. He chose mathematics as his major in university and became an excellent mathematician. He made important contributions to algebra, calculus, and computer science. Vance started working in computer science in the 1920s. He collaborated with mathematicians and computer scientists to create a new era of computer science. His work included establishing mathematical models of computer programs, writing the first set of computer programs, and studying computer algorithms and data structures. Vance was also an outstanding teacher. He had been a professor and lecturer at the City University of New York for many years, dedicated to cultivating a new generation of mathematicians and computer scientists. He also established a mathematics and computer science association and served as the chairman of the association. Vance died in the 1950s at the age of 62. His achievements and contributions will forever be remembered, and his ideas will continue to influence the development of mathematicians and computer science.