### Nonlinear Analysis Seminar and Differential Equation Seminar: Ayman Rimah Said, Duke University, Logarithmic spirals in 2d perfect fluids

SAS 4201In this talk I will present recent results with In-Jeong from Seoul national university where we study logarithmic spiraling solutions to the 2d incompressible Euler equations which solve a nonlinear transport system on $\mathbb{S}$. We show that this system is locally well-posed in $L^p, p\geq 1$ as well as for atomic measures, that is logarithmic…