[FIXED] Find out if matrix is positive definite with numpy

Issue

I need to find out if matrix is positive definite. My matrix is numpy matrix. I was expecting to find any related method in numpy library, but no success. I appreciate any help.

Solution

You can also check if all the eigenvalues of matrix are positive, if so the matrix is positive definite:

import numpy as np

def is_pos_def(x):
    return np.all(np.linalg.eigvals(x) > 0)

Answered By - Akavall