Euler is the most prolific outstanding mathematician in the history of science. * * * has written 886 books and papers, among which analysis, algebra and number theory account for 40%, geometry for 18%, physical mechanics for 28%, astronomy for 1 1%, and ballistics, navigation and architecture for 3%. Mathematician Gauss once said, "Studying Euler's works is always the best way to understand mathematics".
Due to overwork, Euler got an eye disease at the age of 28 and eventually went blind. After Euler was completely blind, he still studied by memory and mental arithmetic until his death, which lasted 17 years. Euler's memory and mental arithmetic are rare. He can retell the contents of his notes when he was young. Mental arithmetic is not limited to simple operations, and advanced mathematics can also be done by heart. Lagrand began to communicate with Euler at the age of 19 to discuss the general solution of isoperimetric problems, from which the variational method was born. The isoperimetric problem has been considered by Euler for many years, and Lagrange's solution has won Euler's warm praise. 1783 One afternoon in September, Euler invited his friends to dinner to celebrate his successful calculation of the law of balloon rising. At that time, shortly after Uranus was discovered, Euler wrote down the essentials of calculating Uranus' orbit and laughed with his grandson. After drinking tea, he suddenly fell ill, and his pipe fell out of his hand, muttering, "I'm dead." Euler finally "stopped living and calculating".
Zu Chongzhi once calculated that the time for the moon to orbit the earth once is 27.2 1223 days, which is almost the same as the modern recognized time of 27.438+0.222 days. One of the many craters on the moon is named "Zu Chongzhi". Zu Chongzhi once calculated that pi should be between 3. 14 15926 and 3. 14 15927. Zu Chongzhi's name is also listed in the Discovery Palace Science Museum, where he discovered the value of pi. On the gallery wall of the auditorium of Moscow State University, there are portraits of famous scientists from all over the world inlaid with colored marble, as well as Zu Chongzhi and Li Shizhen of China. 1983 Wang put forward the semi-analytical function theory for the first time in the world, and 1988 put forward and systematically established the * * * yoke analytical function theory for the first time. These two theories have been successfully applied to electric field, magnetic field, fluid mechanics, elasticity and other fields. These two theories have been cited and developed by many experts and scholars, resulting in the emergence of a series of new branches of mathematics, such as bianalytic functions, polyharmonic functions, multi-analytic functions (k-order analytic functions), semi-bianalytic functions, semi-yoke analytic functions and corresponding boundary value problems, differential equations and integral equations, and this development momentum is strong and unstoppable. This is an unprecedented large-scale original work of China scholars on mathematics in the developing world.
Mathematician Wang's semi-analytic function * * * Yoke analytic function theory is a generalization and development of analytic functions initiated by world mathematicians Cauchy Riemann Wilstras Gauss Euler. 1911010 was born in xiushui county, Jiaxing, Zhejiang on October 28th. He is a Chinese American and a world-class geometer in the 20th century. He initiated and led the research in the fields of global differential geometry, fiber bundle differential geometry and "innovation class", and enjoyed the reputation of "the father of differential geometry" internationally, and won the national title of the United States.