In other words, The Hermiticity of a matrix is invariant under unitary transformations.
换言之，矩阵
厄密性在幺正变换下保持不变。
,不变
；时不变
系统；无变系In other words, The Hermiticity of a matrix is invariant under unitary transformations.
换言之，矩阵厄密性在幺正变换下保持不变。
But diffeomorphism invariant theory leaves some problems to be explained, and the meanings of spacetime and physical theory are still in question.
但微分同胚不变理论存在需要解释问题，空时及物理理论意义仍不明确。
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