cirq.map_eigenvalues

Applies a function to the eigenvalues of a matrix.

cirq.map_eigenvalues(
    matrix: np.ndarray,
    func: Callable[[complex], complex],
    *,
    atol: float = 1e-08
) -> np.ndarray

Given M = sum_k a_k |v_k><v_k|.

matrix The matrix to modify with the function.
func The function to apply to the eigenvalues of the matrix.
atol Absolute threshold used when separating eigenspaces.

The transformed matrix.