@property
    def is_zero(self):
        if any(i.is_zero == False for i in self):
            return False
        if any(i.is_zero == None for i in self):
            return None
        return True
Checks if a matrix is a zero matrix.
dataset/ETHPy150Open sympy/sympy/sympy/matrices/matrices.py/MatrixBase.is_zero