mlx.core.linalg.tri_inv

tri_inv(a: array, upper: bool = False, *, stream: None | Stream | Device = None) → array

Compute the inverse of a triangular square matrix.

This function supports arrays with at least 2 dimensions. When the input has more than two dimensions, the inverse is computed for each matrix in the last two dimensions of a.

Parameters:

• a (array) – Input array.

• upper (array) – Whether the array is upper or lower triangular. Defaults to False.

• stream (Stream, optional) – Stream or device. Defaults to None in which case the default stream of the default device is used.

Returns:

ainv such that dot(a, ainv) = dot(ainv, a) = eye(a.shape[0])

Return type:

array