A High-Order Iterate Method for Computing 𝐴⁽²⁾_𝑇,𝑆

Table 1

Comparison of the computational complexity for different methods.

	Methods
	(1)	(2)	(3)	(4)	(5)	(9)
Rate of convergence	2	3	3	4	9	15
Number of matrix multiplications	2	3	4	4	9	9
Efficiency index (𝐸)	1	1	0.75	1	1	1.678