Steady skew-symmetrized Navier-Stokes equation
= Steady skew-symmetrized Navier-Stokes equation
The steady equation $\nu Au+\widetilde B(u,u)=f$ retains the <energy> cancellation without imposing <incompressibility>. Galerkin bounds, compactness, and elliptic bootstrapping produce an $H^2$ periodic solution for square-integrable forcing.