Wen Lan, 1946 was born in Lanzhou, Gansu Province in March, and his native place is Jingxian County, Anhui Province. Mathematician, academician of China Academy of Sciences, academician of Third World Academy of Sciences, professor of Peking University Institute of Mathematics, doctoral supervisor.
1970, Wen Lan graduated from the Department of Mathematical Mechanics of Peking University; 198 1 year obtained the master's degree in mathematics department of Peking University; 1986 received his Ph.D. in Mathematics Department of Northwest University. 1988 worked in Peking University Institute of Mathematics; 1997 won the 6th Chen Shengshen Mathematics Prize; 1999 was elected as an academician of China Academy of Sciences; From 2004 to 2007, he served as the chairman of the ninth Council of chinese mathematical society; In 2005, he was elected as an academician of the Third World Academy of Sciences; 20 1 1 won the 10th China Mathematics Award.
Wen Lan is mainly engaged in the research of differential dynamic systems, and has made internationally influential contributions to the research of differential dynamic systems with his collaborators.
Chinese name: Wen Lan.
Wen Lan Mbth
Nationality: People's Republic of China (PRC).
Ethnic group: Han nationality
Place of birth: Lanzhou, Gansu
Date of birth:1March 946
Occupation: teaching and scientific research worker
Graduate school: Northwestern University, USA
Main achievements: 1999 was elected as an academician of China Academy of Sciences.
Representative works: c 1 closed lemma nonsingular Allen homomorphism
Native place: Jingxian County, Anhui Province
Character experience
1March, 946, Wen Lan was born in Lanzhou, Gansu Province, and his native place was Jingxian County, Anhui Province.
1970, Wen Lan graduated from the Department of Mathematical Mechanics in Peking University.
198 1 year, Wen Lan graduated from Peking University Department of Mathematics with a master's degree.
65438-0986, Wen Lan graduated from the Department of Mathematics of Northwestern University with a doctorate.
From 65438 to February 0988, Wen Lan was engaged in postdoctoral research in Peking University.
From June 65438 to July 0990, Wen Lan worked in Peking University Institute of Mathematics, during which he made many academic visits to institutions such as Northwestern University.
From 65438 to 0999, Wen Lan was elected as an academician of the Department of Mathematics and Physics of China Academy of Sciences.
In 2005, Wen Lan was elected as an academician of the Third World Academy of Sciences.
Major achievements
achievements in scientific research
Wen Lan has done a lot of work on some basic problems in the field of differential dynamical systems, such as Williams conjecture of nonexpansive attractors, C 1 closed lemma of irreversible systems, stability conjecture of flows, C 1 connected lemma, Palis density conjecture and so on. Relying on the seminar on power system of Peking University, together with colleagues and students, the western theory and the theory of Academician Liao are combined to push the research work to the international forefront.
Wen Lan solved the problem of the highest form of stability conjecture for 26 years. The problem of describing the tangent system far from homoclinic is solved, which provides a bridge for crossing the main trend of hyperbola. In this paper, the minimum variance set of general systems far from homoclinic bifurcation is characterized, which lays an important foundation for solving Palis density conjecture in the near future. The general principle of disturbance and control trajectory migration along the trajectory C 1 is given, and the connection lemma of C 1 is proved differently, and the closed lemma of irreversible system C 1 is proved, which provides the cornerstone for the large-scale theory of irreversible systems.
Text, l.the c1closinglememafornon-singularandomorphologies. Ergodic theory and dynamic systems, 199 1, 1 1(02).
Lan. c 1 closinglemmafornon-singularendomorphologies(eng)。 progressionnaturalsciencecocommunication of statekeylaboratoriesofchina， 199 1， 1 1(6):393-4 12。
Warm. 1 closinglemmaforendomorphism with finitelymanysingularities。 proceedings of American mathematical society， 1992， 1 14( 1):2 17-223。
Warm. anosovenmorphismsonbranchedsurfaces . academic press，Inc. 1992。
Warm. onthec 1 stabilityconjuncturefor flows。 Differential equation, 1996, 129(2):334-357.
Wen, Shaz. Abas ICC 1 perturbation theorem. Differential equation, 1999, 154(2):267-283.
Wen, Shaz. C 1 connection error. Journal of American Mathematical Society, 2000,352 (11): 5213-5230.
Warm. Homoclinic lines. Nonlinear, 2002,15 (5):1445-1469.
Gainswill. Similarities and differences between heterocyclic and homocyclic embryos. Differential equations, 2003,15 (2-3): 451-471.
Gainswill. Nonsingular star flow ssatisfy yatomaandthen-cycle condition Mathematics of Invention, 2006, 164(2):279-3 15.
personnel training
Wen Lan believes that while China's mathematics career is developing vigorously, it has also encountered some new problems. In recent years, the research funds obtained by mathematicians in China have increased rapidly, but sometimes, with more funds, better conditions and floating people's hearts, there seem to be fewer scholars who can stand loneliness and do research; In recent years, mathematics work is generally assessed and evaluated according to the number of papers, especially the number of SCI papers. The number of articles is indeed increasing, but the truly remarkable achievements are not necessarily increasing, which is still a difficult problem to be overcome. There is also the reform of mathematics teaching in primary and secondary schools. In recent years, there has been a heated debate in the field of mathematics. Because it has involved the implementation level, the problem has become a bit urgent. The reform of mathematics teaching in primary and secondary schools is related to the next generation of the country and is of great significance. I hope more people care about this problem and try to make math education in primary and secondary schools less detours.
Honor recognition
social service
Personality assessment
Wen Lan is an academic leader of dynamical systems in China, and has made important contributions to some basic problems in the field of differential dynamical systems, such as Williams conjecture of nonexpansive attractors, C 1 closed lemma of irreversible systems, C 1 connected lemma, flow stability conjecture, odd star flow problem, Palis density conjecture, etc. , are in the leading position in the world. (Hebei Normal University Review)