The 28th International Congress of Mathematicians was held on August 1-9, 2018 in Rio de Janeiro, Brazil. Prof. Jiangong You from the Chern Institute of Mathematics of Nankai University was invited to deliver a 45-minute lecture on August 2. In the lecture titled "Quantitative Almost Reducibility and Applications", Prof. You mainly introduced some research results he has achieved with collaborators on reducibility of quasi-periodic linear systems and its applications in operator spectral theory. Following CAS academicians Yiming Long and Weiping Zhang, Prof. You is another Nankai scholar invited to give a lecture at the ICM since 2002.
Jiangong You, recipient of the National Science Fund for Distinguished Young Scholars, is now a professor and doctoral supervisor at the Chern Institute of Mathematics, Nankai University. For more than 20 years, Prof. You has been engaged in research on Hamiltonian dynamical systems and applications, and has achieved many outstanding results on study of the Duffing equation's stability, KAM theory, quasi-periodic motions of Hamiltonian partial differential equations, and spectral theory of Schrodinger operators, etc., which have been published in renowned journals such as Invent. Math., Duke Math. J. and GAFA. Prof. You has also received the Outstanding Young Scholar Award of Hong Kong Qiu Shi Science and Technologies Foundation, the First Prize of National Award for Science and Technology Progress in Universities and Colleges, and the Second Prize of National Award for Natural Sciences.
The International Congresses of Mathematicians (the ICMs) are global academic conferences on mathematics hosted by the International Mathematical Union. They are among the largest mathematical conferences in the international mathematical community and are held once every four years. Apart from academic exchange as the main content, many international recognized awards, including the Fields Medal, the Rolf Nevanlinna Prize, the Carl Friedrich Gauss Priz and the Chern Medal Award, are presented in the Opening Ceremony of the conferences. In 1897 the first ICM took place in Zurich, Switzerland, and so far 27 have been held. Since the one in Paris in 1900, the ICMs have been held every four years without interruption, except during the two world wars. In 2002, the 24th International Congress of Mathematicians was held in Beijing, China.
For every Congress the ICM Committee invites renowned mathematicians who have done outstanding work in related fields to deliver lectures. It's regarded as wide recognition by the international mathematical community, therefore a great hornor for the invited speakers.
