Professor Ji Lizhen's research fields are mainly the interdisciplinary subjects of mainstream mathematics such as geometry, topology and number theory. World-class original innovative achievements have been made in the compactness of locally symmetric space, the spectrum and trace formula of Riemannian surfaces, and a large number of academic papers have been published in world-class mathematical magazines. He solved several internationally famous conjectures, such as Borel's conjecture and Siegel's conjecture, which have not been solved for a long time. He also made important contributions to several other famous conjectures, including the famous Novikov conjecture. His research field belongs to the intersection of geometry, topology and number theory, and he is the most outstanding international young leader in this important field. A paper he collaborated with Professor mcpherson, an academician of the American Academy of Sciences, was selected as an "important review" article by the American Journal of Mathematical Review because of its groundbreaking ideas (only five articles by mathematicians in Chinese mainland were highlighted in recent years 10).

Professor Ji Lizhen often goes back to Zhejiang University to help the Mathematics Center organize many important academic activities, such as the world-class academic conference last summer: the international conference to commemorate Professor Borer's core mathematics. He is actively promoting the development of mathematics in Zhejiang University.

Professor Ji Lizhen also devoted great enthusiasm to teaching. After listening to his math class, many American students who originally studied engineering began to have a strong interest in mathematics, and some even changed their majors to the Department of Mathematics.

On June 5438+February 65438+February 7, 2007, the fourth World Congress of Chinese Mathematicians, the largest and most influential top-level event in the global Chinese scientific community, was held in Hangzhou. More than 1200 outstanding Chinese mathematicians from all over the world gathered in Hang Cheng for academic exchange. As a young mathematician under the age of 45, Ji Lizhen won the Morningstar Silver Award. Only seven Chinese mathematicians in the world have won the Morningside Mathematics Award with the reputation of "Chinese Fields Award".