Seminar toàn Khoa ngày 20/9/2023

+ Thời gian: 15h00 - 17h30, thứ Tư, ngày 20/9/2023

+ Địa điểm: Phòng 416 nhà T1, trường ĐHKHTN

+ Chương trình:

15:00 – 15:10

Khai mạc

15:10 – 16:10


Prof. Jean-Michel Coron, University of Paris VI, France

Title: Finite-time stabilization

Abstract: We present various results on the finite-time stabilization of control systems. This includes control systems in finite dimension (with an application to a quadcopter sliding on a plane) as well as control systems modeled by means of partial differential (1-D linear parabolic equations and a viscous Burgers' equation).

16:10 – 16:30

Tiệc trà tại sảnh trước phòng 418 nhà T1

16:30 – 17:30


Prof. Marius Tucsnak, University of Bordeaux, France

Title: PDE systems describing the motion of solids in a viscous fluid: wellposedness, control and long-time behaviour

Abstract: The study of systems describing the motion of rigid bodies in a fluid goes back to Euler and Kirchhoff, who considered the case of an ideal fluid subject undergoing a potential flow. The case of a single solid moving in a viscous incompressible fluid filling the whole space was considered much later, around 1980 by Weinberger and Serre. Welposedness issues for the case when the solid-fluid system is contained in a bounded container or/and of several moving bodies has been intensively studied since 2000. In this talk we first recall some of these wellposedness results . We next describe some associated control problems, aimed to provide a new approach to the understanding of the swimming of aquatic organisms. We finally describe some recent results concerning the long-time behaviour of solutions.


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