	\begin{align*}
		d_{\mathcal{M}_m}(\boldsymbol{AZ}_l\boldsymbol{W}) 
		&\leq \sqrt{\lambda}d_{\mathcal{M}_m}(\boldsymbol{Z}_{l}\boldsymbol{W}) \\
		&\leq \sqrt{\lambda}sd_{\mathcal{M}_m}(\boldsymbol{Z_{l}}) \\
	\end{align*}
