dq.isdm

isdm(x: QArrayLike) -> bool

Returns True if the qarray is in the format of a density matrix.

Parameters:

• x (qarray-like of shape (...)) –

  Qarray-like.

Returns:

• True if the last two dimensions of x are equal, False otherwise.

Examples:

>>> dq.isdm(jnp.ones((3, 3)))
True
>>> dq.isdm(jnp.ones((5, 3, 3)))
True
>>> dq.isdm(jnp.ones((3, 1)))
False