qiskit.aqua.algorithms.HHL.expand_to_hermitian

static HHL.expand_to_hermitian(matrix, vector)

Expand a non-hermitian matrix A to a hermitian matrix by [[0, A.H], [A, 0]] and expand vector b to [b.conj, b].

Parameters

• matrix (ndarray) – the input matrix

• vector (ndarray) – the input vector

Return type

Tuple[ndarray, ndarray]

Returns

the expanded matrix, the expanded vector