human
matrix multiplication symbol.
assistant
Here is a Python function to multiply the matrix

import numpy as np

def __matmul__(a, b):
    """Return the matrix multiplication of ``a`` and ``b``.

    """
    return np.matmul(a, b)

# Enter the 2d array
a = np.array([[1,2,3],[4,5,6],[7,8,9]])

# Enter the 2d array
b = np.array([[1,2,3],[4,5,6],[7,8,9]])

# Calling the function
print((__matmul__(a, b)))

#Example Output

# [[ 30  36  42]
#  [ 66  81  96]
#  [102 126 150]]

#Remember to inspect code for bugs.