scipy.linalg.sqrtm

scipy.linalg.sqrtm(A, disp=True)

Matrix square root.

Parameters :

A : (N, N) array_like

Matrix whose square root to evaluate

disp : bool, optional

Print warning if error in the result is estimated large instead of returning estimated error. (Default: True)

Returns :

sgrtm : (N, N) ndarray

Value of the sign function at A

errest : float

(if disp == False)

Frobenius norm of the estimated error, ||err||_F / ||A||_F

Notes

Uses algorithm by Nicholas J. Higham