Finally, the hermiticity of phase operator (?) is discussed.

并对位相算符厄密性问题进行讨论。

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In other words, the Hermiticity of a matrix is invariant under unitary transformations.

换言之，矩阵的厄密性在幺正变换下保持不变。

youdao

In other words, the Hermiticity of a matrix is invariant under unitary transformations.

换言之，矩阵的厄密性在幺正变换下保持不变。

youdao