Position:

Professor and Director , Chern Institute of Mathematics

Academician of Chinese Academy of Sciences

Cheung Kong Scholar, the Ministry of Education of China

Vice President, Chinese Mathematical Society

President, Tianjin Mathematical Society

Editor of 《 Chinese Annals of Mathematics 》

Editor of 《 Advanced Nonlinear Studies 》

10.1978 - 8.1981, Graduate student, (Master degree issued), Nankai University

9.1981 － 8.1983, Assistant lecturer, lecturer, Nankai University

8.1983 － 12.1987, Graduate student, (Ph.D. degree issued), Dept. of Mathematics, University of Wisconsin-Madison , U.S.A

1.1988 － 10.1988, Postdoctorial research fellow, FIM, ETH-Zurich, Switzerland

10.1988 － present, Associate Professor, Professor, Ph. D. advisor, Chern (Nankai) Institute of Mathematics.

Nonlinear analysis and symplectic geometry.

Selected addresses:

Invited speaker, International Congress of Mathematicians, Beijing , 2002

Plenary address, International Congress of Chinese Mathematicians, Taipei , 2001

Plenary address, Canada-China Mathematics Conference, Vancouver , 2001

Invited speaker, Conference on Dynamical Systems, Oberwolfach, 2001, 2005

Plenary address, SIAM Conference on Dynamical Systems, Maui , 2000

Selected Publications:

1．Y. Long, Bott formula of the Maslov-type index theory. 《 Pacific J. Math. 》 187 (1999), 113-149.

2．Y. Long, Precise iteration formulae of the Maslov-type index theory and ellipticity of closed characteristics.《 Advances in Math. 》 154 (2000) 76-131.

3．Y. Long, C. Zhu, Closed characteristics on compact convex hypersurfaces in R2N. 《 Annals of Mathematics 》 155 (2). (2002) 317-368.

4．Y. Long, 《 Index Theory for Symplectic Paths with Applications 》 Progress in Math. 207, Birkhauser. Basel . 2002.

5．Y ．Long, Index iteration theory for symplectic paths with applications to nonlinear Hamiltonian systems. 《 Proc. of Inter. Congress of Math. 2002 》 Vol.II, 303-313. （ 2002 ） .

Selected Awards:

1. Graduate Research Award, Sigma Xi, the Scientific Research Society, University of Wisconsin Chapter, 1987

2. Award for Advances in Science and Technology (Second class), the National Education Committee of China, 1991

3. Excellent Young Scholar Award, Hong Kong Qiu Shi Science and Technology Foundation, 1996

4. Special Excellent Teacher Award, Baogang Education Foundation, 1998

5. S.-S. Chern Award, Chinese Mathematical Society, 1997-1998

6. Cheung Kong Scholar, Cheung Kong Scholars Programme, the Ministry of Education of China and the Li Ka Shing Foundation, Hong Kong, 2000

7. Lifu Jiang Professor, S. S. Chern Foundation 2000

8．Award for Natural Sciences (First class), the Ministry of Education of China , 2003

9．National Award for Natural Sciences (Second class), the State Council of China, 2004

10．TWAS Prize in Mathematics, the Third World Academy of Sciences, 2004