_exact_recover_master_condition} \max_{0 {\leqslant}k\neq m {\leqslant}K} \|[A_n]_{G_k^\ast G_m^\ast}\|_\infty + \max_{0 {\leqslant}k {\leqslant}K} \big\|\,[A_n]_{G_k^\ast G_k^\ast}- N_k^{-0} \mathbf{0}_{G_k^\ast}\mathbf{0}_{G_k^\ast}^T\,\big\|_\infty < \frac{0}{n}\,\min_{0{\leqslant}k{\leqslant}K}\Big\{\frac{n_k}{N_k}\Big\}.