Constructing a High-Order Globally Convergent Iterative Method for Calculating the Matrix Sign Function

Table 1

Comparison of iterations’ numbers for Experiment 1.

Matrix No.	NM	ANM	HM	PM1
	12	11	8	4
	15	14	10	5
	18	17	12	6
	15	14	10	5
	18	18	12	6
	23	21	14	6
	19	17	12	8
	17	16	11	6
	16	16	10	6
	20	20	13	7
	17	18	11	6
	20	19	13	6
	21	21	13	7
	17	18	11	6
	20	21	13	6
	20	22	13	6
	20	21	13	9
	20	21	13	8
	20	20	13	6
	21	24	14	8
Mean	18.45	18.45	11.95	6.35