Topological extension of Calabi invariants and its application(Distinguished Lecture at BICMR)
主 题: Topological extension of Calabi invariants and its application(Distinguished Lecture at BICMR)
报告人: Professor Yong-Geun Oh (Institute of Basic Sciences, Korea)
时 间: 2015-11-10 14:00 - 15:00
地 点: Room 77201, Yard 78, Beijing International Center for Mathematical Research
In this talk, I will explain how we can extend the classical Calabi homomorphism on the area-preserving diffeomorphism group of two-disc to the group of Hamiltonian homeomorphisms. I will also mention implication of this extension result on the structure of area-preserving homeomorphism group of the two-disc.
