Inviscid damping for a class of monotone shear flow

April 16, 2020 1:15pm UTC

April 16, 2020 9:15pm UTC +08 (Host local time)

Speaker: Weiren Zhao (NYU Abu Dhabi ) - Hosted by Institute of Mathematical Sciences, ShanghaiTech University

Abstract:
In this talk, I am going to talk about the nonlinear inviscid damping for a class of monotone shear flows in the finite channel for initial perturbation in Gevrey class with compact support. The main idea of the proof is to use the wave operator of a slightly modified Rayleigh operator in a well chosen coordinate system. (...)

Epidemic modeling – basics and challenges

April 23, 2020 6:30pm UTC

April 23, 2020 2:30pm UTC -04 (Host local time)

Speaker: Andrea Bertozzi (UCLA) - Hosted by ETH-Zurich, Michigan State, TUM, UCLA, UCSD

Abstract:
I will review basics of epidemic modeling including eponential growth, compartmental models and self-exciting point process models. I will illustrate how such models have been used in the past for previous pandemics and what the challenges are for forecasting the current COVID-19 pandemic. I will show some examples of fitting of data to US states and what one can do with those results. (...)