Array vs Matrix

import numpy as np

mat_a = np.mat('1 2; 3 4')
mat_b = np.mat('5 6; 7 8')

mat_a

ar_a = np.array([
    [1, 2],
    [3, 4]
])

ar_b = np.array([
    [5, 6],
    [7, 8]
])

ar_a

# Matrix multiplication

mat_c = mat_a * mat_b

mat_c

# Numpy array multiplication (element wise)

ar_c = ar_a * ar_b

ar_c

# Numpy dot multiplication

ar_d = np.dot(ar_a, ar_b)

# We can also use @
ar_d = ar_a @ ar_b

ar_d