Final Draft

Shiing Shen Chern who was a Chinese American mathematician, whose name is immortalized in the "Chern classes" of differential geometry, he was born on October 26th, 1911 in JiaXing, China. One of the greatest geometers of the 20th century and a professor emeritus of mathematics at the University of California, Berkeley. He made many of successes in his life, which will affect us forever, such as Differential geometry which is the language of modern physics as well as an area of mathematical delight.


Professor Chern was living in the era of revolution in China, his father worked for government, in his early life, he had only one day of elementary school, four years at middle high school, and at aged 15 he skipped two grades to enter the Nankai University. He also studied at the University of Hamburg, where he received his doctorate in 1936, before spending a year at the Sorbonne in Paris. While undertaking graduate studies at Tsing Hua University, Peking, Chern became a really interest in differential geometry. During the period of 1934 to 1943, Chern made his three major dicisions that affect the rest of his life. In 1934, he earned a chance to study aboard, and he chose to went to Europe instead of U.S, because he had listened to the lecture of Blaschke’s when he was still in Peking in 1932, which attracted him most.


And then in 1936, use a postdoctoral fellowship for study in Europe to study with Elie Cartan in Paris. Later in 1943, at the end of World War II, Chern returned to China to the Institute of Mathematics at the Academia Sinica in Nanking, he made one of his most important decision in his life to accepted the invitation go to visit the Institute for Advanced Study (IAS) at Princeton, even it was a difficult time to travel. At Tsinghua, he married his wife Shih-Ning, the daughter of a professor, in Kunming in 1939.


He returned to teach in China, but the environment limited his contact with mathematicians outside the country, and Professor Chern left for Princeton University. He later taught at the University of Chicago and eventually became a naturalized U.S. citizen.


In 1975, he received the U.S. National Medal of Science Prize for his efforts on the geometry."He was a towering figure in 20th century mathematics," said UC Berkeley mathematics Professor Calvin Moore. "He reshaped differential geometry and introduced several fundamental tools."


Chern died of heart failure following a heart attack, in 2004, at aged 93 in Tianjin, China, even though he was died, he had left with a huge property for us. A large part of modern algebraic geometry would not exist without Chern classes, his efforts on geometry made scientists take a big step toward the new mathematical world.


Introduction


What is String Theory? First what is the world made of, ordinary matter is made of atoms, and atom is made of three part, proton, neutron, and with the electron arranged around them. But neutrons and protons are made of even smaller particles, known as quarks. The world has many secretes we hadn't found out yet. The essential idea behind string theory is this: all of the different 'fundamental ' particles of the Standard Model are really just different manifestations of one basic object: a string. This is a most famous theory in geometry field, and Chern made a prove of this theory, a Chinese American mathematician of the 20th century.