Streamlines concentration and application to the incompressible Navier-Stokes equations

Eric Foxall, Slim Ibrahim, Tsuyoshi Yoneda

For a smooth domain $D$ containing the origin, we consider a vector field $u\in C^1(D\setminus \{0\},{\mathbb{R}}^3)$ with $\divg u \equiv 0$ and exclude certain types of possible is…