Alan Cormac: He founded the mathematical theory of computed tomography (CT) and won the Nobel Prize in medicine. Herbert Haupmann: Co-invented the mathematical method of directly determining the crystal structure with X-rays, and won the Nobel Prize in Physics. Johnf nash, reinhard Selten and John Halsani developed the theory of multiplayer non-cooperative equilibrium game, and they shared the Nobel Prize in Economics. Leonid Hurvich won the 2007 Nobel Prize in Economics. James heckman won the 2000 Nobel Prize in Economics with Daniel McFadden for his development and contribution to the principles and methods of analyzing selective sampling, but he graduated from the Department of Mathematics of Colorado College. In fact, many Nobel Prize winners may be proficient in many seemingly similar or dissimilar fields at the same time. For example, they are physicists/mathematicians/biologists at the same time ... And there are many mathematicians among the winners of the economics prize in recent years, such as lloyd shapley, winner of the 20 12 Nobel Prize in Economics, whose undergraduate and doctoral degrees are in the field of mathematics, and Alvin Ross, whose undergraduate and doctoral degrees are also in the field of operational research close to mathematics. Mathematics, as a basic subject, is a learning tool for economics, biology, physics and other disciplines, which cannot be strictly separated. For example, game theory belongs to economics, but there are also views that it is a branch of mathematics, so it is inseparable from from╮(╯_↓)╭.