题目:Sharp Decay Characterization for the Compressible Navier-Stokes Equations
报告人:徐江 教授(南京航空航天大学)
地点:致远楼108室
时间:2025年7月1日 10:00–11:00
Abstract: The low-frequency assumption has been extensively applied to the large-time asymptotics of solutions to the compressible Navier-Stokes equations and incompressible Navier-Stokes equations since from those classical efforts. In this talk, we will give a sharp decay characterization for the compressible Navier-Stokes equations in the critical framework. Precisely, the Besov boundedness of the low-frequency part of initial perturbation is not only sufficient but also necessary to achieve those upper bounds of time-decay estimates. Furthermore, it is shown that upper and lower bounds of time-decay estimates both hold if and only if the low-frequency part of the initial perturbation belongs to a nontrivial subset of some Besov space.
报告人简介:徐江,南京航空航天大学教授、博士生导师,现任数学学院副院长,江苏省工业与应用数学学会副理事长、江苏省数学学会副理事长。2007年毕业于浙江大学,获博士学位,主要从事流体力学偏微分方程的理论研究。在 Adv. Math., Arch. Rational Mech. Anal., Comm. Math. Phys., J. Funct. Anal. 等国际著名期刊上发表 SCI 论文70余篇。2019年入选国家高层次青年人才,2023年获教育部高等学校科学研究优秀成果奖(科学技术)二等奖,2024年入选江苏省第七期“333 高层次人才培养工程”培养对象(第二层次)。
欢迎各位参加!