3 problems

Viscosity-assumption conjecture. The assumption

Consider the two-dimensional magnetic hydrodynamical (MHD) system, with energy understood in the usual physical sense and with ohmic resistivity as the magnetic diffusivity paramet…

Let $v$ be a solution of the incompressible Euler equations with lesser regularity than the class $L_t^\infty B_{3, \infty}^{1/3}$, and let $e(t)$ denote its energy profile. An ene…