cirq.is_special_unitary

Determines if a matrix is approximately unitary with unit determinant.

cirq.is_special_unitary(
    matrix: np.ndarray, *, rtol: float = 1e-05, atol: float = 1e-08
) -> bool

A matrix is special-unitary if it is square and its adjoint is its inverse and its determinant is one.

Args
`matrix`	The matrix to check.
`rtol`	The per-matrix-entry relative tolerance on equality.
`atol`	The per-matrix-entry absolute tolerance on equality.

Returns
Whether the matrix is unitary with unit determinant within the given tolerance.

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Last updated 2025-04-15 UTC.

Args