Professor Cheng Chung-ching was a guest at the 277th lecture of the "Beauty of Neo-Confucianism" Frontier Forum

At 3:00 p.m. on October 27, professor Cheng Chongqing of Nanjing University held an academic report with the theme of "Some Problems in Dynamic System Research from Exploring the Motion stability of Celestial bodies". The report mainly focused on the history of dynamic system and the latest research progress.The report, lecture 277 of the "Beauty of Science" Frontier Forum, was chaired by Professor Chen Yanping, Deputy Dean of The College of Mathematics and Physics.

Cheng Chongqing, professor and doctoral supervisor of the Department of Mathematics, Nanjing University, has been engaged in dynamic system research for a long time. He has published more than 50 papers on Hamilton system instability, variational structure of connected orbits, Arnold diffusion, KAM theory and weakly KAM theory.1996 national outstanding youth fund, in 1997 was awarded a prize of Hong Kong realistic, morningside mathematics in 1998 silver (the first mainland mathematician), in 1999 was hired as the Ministry of Education Yangtze river scholars distinguished professor, in 2000 was awarded the first prize for China's colleges and universities natural science "(the first persons), in 2001 won the second prize of national natural science" (the first persons), in 2010 the 26th international conference invited mathematicians for 45 minutes the conference report.He used to be an expert of mathematics Evaluation Group of Academic Degrees Committee of the State Council, a member of the Leading Group of National Mathematical Tianyuan Foundation, and deputy leader of mathematics evaluation Group of National Foundation of China, vice President of Nanjing University.

The report begins by reviewing the origins of dynamical systems research.After Poincare initiated a new era of dynamic system research at the end of the 19th century and after the efforts of many outstanding scientists such as Birkhoff, Kolmorgorov and Arnold, relevant researches greatly deepened people's understanding of nature.Finally, the author also introduced his recent achievement published in the Journal of Differential Geometry, one of the top mathematical journals.

At the end of the report, Professor Cheng Chongqing gave detailed answers to the questions about Lyapunov functional letter and the stability of the dynamic system, which enabled the teachers and students to have a deeper understanding of the report content.