Today, 95 years ago, on July 15, 1930 (Lunar Calendar, June 20, 1930), American mathematician Stephen Smear was born. Stephen Smear (July 15, 1930) was an American mathematician, winner of the Fields Prize in 1966. He became famous for demonstrating the five-dimensional or more Pongaea hypothesis. Then he turned to researching the dynamic system, made important achievements, and also plotted a plan for research, giving many researches to be carried out. Smear also worked in mathematical economics, and recently also explored different computational theories. In 1998, Smear listed the 18 mathematical problems of the 21st century, and mentally struck along the famous Hilbert mathematical problem in 1900. The problem of Smear is partly from the Hilbert mathematical