qml.liealg.CI

CI(op)

Canonical Cartan decomposition of type CI, given by \(\theta: x \mapsto x^\ast\).

Note

Note that we work with Hermitian operators internally, so that the input will be multiplied by \(i\) before evaluating the involution.

Parameters

op (Union[np.ndarray, PauliSentence, Operator]) – Operator on which the involution is evaluated and for which the parity under the involution is returned.

Returns

Whether or not the input operator (times \(i\)) is in the eigenspace of the involution \(\theta\) with eigenvalue \(+1\).

Return type

bool

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