2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/127456We prove that the energy equality holds for weak solutions of the 3D Navier-Stokes equations in the functional class $L^3([0,T);V^{5/6})$, where $V^{5/6}$ is the domain of the fractional power of the Stokes operator $A^{5/12}$.7 pagesAnalysis of PDEsMathematical Physics76B03; 76F02text