Optimal Backward Perturbation Analysis for the Block Skew Circulant Linear Systems with Skew Circulant Blocks

Table 1

	𝜖	𝒦	𝜂1(𝑥)	𝜂2(𝑥)
Case 0	0	6.472	0	0
Case 1	0.0694	6.193	0.1252	0.2487
Case 2	0.0075	6.438	0.0127	0.0223
Case 3	7.5122×10^−4	6.468	0.0013	0.0022