Method trace

ot/backend.py:932–940

r""" Returns the sum along diagonals of the array. This function follows the api from :any:`numpy.trace`. See: https://numpy.org/doc/stable/reference/generated/numpy.trace.html

(self, a)

        raise NotImplementedError()

    def trace(self, a):
        r"""
        Returns the sum along diagonals of the array.

        This function follows the api from :any:`numpy.trace`.

        See: https://numpy.org/doc/stable/reference/generated/numpy.trace.html
        """
        raise NotImplementedError()

    def inv(self, a):
        r"""