数学与系统科学研究院

计算数学所学术报告

报告人：        Zhang Youjin

Tsinghua University

报告题目 Deformations of Bihamiltonian Structures of Hydrodynamic Type

Abstract: Hamiltonian structures of hydrodynamic type were introduced and classified by B.A. Dubrovin and S.P. Novikov in the eighties of last century. In this talk we consider a class of deformations of bihamiltonian structures of hydrodynamic type. Under the assumption of semisimplicity, we prove quasitriviality of such deformations and classify all infinitesimal ones. We also consider the connections between such deformed bihamiltonian structures and the class of integrable systems that have close relations to 2d topological field theory.

报告时间：2004年12月9日  下午4：00-5：00

报告地点：科技综合楼三层报告厅