 $$[{{\nabla}}^0\, v\,]_{{{\widehat{\omega}}};\,0\,{{\rho}}}\leq\,C\,[\, {\boldsymbol{L}}\,v\,]_{{{\overline{\omega}}};\,0\,{{\rho}}}\,+\,C\,{{\rho}}\,[\,{{\nabla}}^0\,v\,]_{{{\overline{\omega}}};\,0\,{{\rho}}} +\, C\,\|{{\nabla}}^0\,v\,\|\,