The role of Morrey spaces in the study of Navier–Stokes and Euler equations

In this survey, we will pay a few words on the solution of the Cauchy problem for the 3D Navier–Stokes or Euler equations (with a focus on real harmonic analysis methods). Then we will highlight the role of Morrey spaces in other problems for the Navier–Stokes equations : uniqueness, weak-strong uniqueness, self-similar solutions, etc.