− | \Delta\mathcal{J}^{*}=\frac{1}{k}\sum_{i=1}^{k}\ln\displaystyle|\lambda_i|-\frac{1}{n}\sum_{i=1}^{n}\ln\displaystyle|\lambda_i|+\eta | + | \Delta\mathcal{J}^{*}=\Delta\mathcal{J}_1^{*}-\Delta\mathcal{J}_2^{*}=\frac{1}{k}\sum_{i=1}^{k}\ln\displaystyle|\lambda_i|-\frac{1}{n}\sum_{i=1}^{n}\ln\displaystyle|\lambda_i|+\eta |