XI Nanhua

Prof. Xi Nanhua was born in Yingde,Guangdong Province, in 1963. He graduated from Huaihua Institute as a college student majored in Mathematics in 1981. Starting 1982, he was a graduate student in the Department of Mathematics, East China Normal University, and received a MS. Degree in 1985 and a Ph.D. degree in 1988, both from the university. In 1988 he joined the Institute of Mathematics, Chinese Academy of Sciences (CAS) as a postdoctoral fellow, then assistant professor, associate professor, and professor. He was elected to CAS in 2009. Prof. Xi now serves as the academic President of Academy of Mathematics and Systems Science, CAS, and Vice-President of University of Chinese Academy of Sciences (UCAS).

His research areas are algebraic groups and quantum groups. His research works include: 1) proved Lusztig's conjecture on based ring of a two-sided cell for affine Weyl groups of type A; 2) determined the necessary and sufficient condition for the validity of Deligne-Langlands conjecture for affine Hecke algebras; 3) showed that the finite dimensional representations of quantum groups over a field of characteristic p with parameter not being a root of unity behave similar to those of algebraic groups over a field of characteristic 0; 4) obtained an explicit and concrete realization for finite dimensional irreducible representations of quantum groups at roots of unity; 5) joint with Chari, constructed monomial bases of quantum groups; 6) computed some canonical bases; 7) obtained a commutation formula for root vectors; 8) joint with Lusztig, discovered canonical left cells; 9) joint with Tanisaki, proved that for an affine Hecke algebra of type A, a certain geometric filtration and a certain algebraic filtration coincide.

He received: State Natural Science Award (second class), Chern Shiing-Shen Mathematics Award from the Chinese Mathematical Society, Morningside silver medal of mathematics, the National Science Fund for Distinguished Young Scholars.