\,]_{{\overline{\omega}}}\leq\,c({{\theta}})\,\Big(\,\frac{\|u\|}{{{\rho}}^0}+\,\frac{\|\,{{\nabla}}\,u\|}{{{\rho}}^0}+\,\frac{\|\,{{\nabla}}^0\,u\|}{{{\rho}}}\,\Big)\,\frac{|x-\,y|}{{{\overline{\omega}}}(|x-\,y|}\,. \label{