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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