Several numerical methods for computing unitary polar factor of a matrix

Advances in Continuous and Discrete Models

Theory and Modern Applications

Table 2 Results of comparison for the dimension \(\pmb{m\times n=110\times 100}\) in terms of the elapsed time

Matrix No.	NM	ANM	KHM	PM1	PM2	PM3
1	0.040002	0.041002	0.020001	0.018001	0.019001	0.020001
2	0.039002	0.044002	0.029002	0.022001	0.018001	0.019001
3	0.042002	0.042002	0.020001	0.018001	0.018001	0.020001
4	0.039002	0.041002	0.020001	0.019001	0.018001	0.022001
5	0.040002	0.042002	0.020001	0.019001	0.018001	0.020001
6	0.041002	0.041002	0.020001	0.019001	0.018001	0.020001
7	0.039002	0.045003	0.023001	0.018001	0.027002	0.026002
8	0.050003	0.041002	0.020001	0.022001	0.019001	0.020001
9	0.039002	0.045003	0.020001	0.018001	0.021001	0.021001
10	0.043002	0.041002	0.020001	0.019001	0.018001	0.020001
11	0.040002	0.042002	0.020001	0.019001	0.019001	0.020001
12	0.040002	0.049003	0.022001	0.019001	0.018001	0.019001
13	0.040002	0.041002	0.020001	0.021001	0.018001	0.020001
14	0.041002	0.045003	0.020001	0.019001	0.018001	0.019001
15	0.040002	0.042002	0.020001	0.019001	0.019001	0.019001