invariant GMAT

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

换言之，矩阵厄密正变换下保持不变。

2.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需要解释问题，空及物理理论意义仍不明确。

3.They came to think about algebraic objects associated with knots/links that are invariant under isotopy c .J.W.Alexander came up with the first good such quantity, the Alexander polynomiald .

我认为剩下人里面绝大多数对于一个中国人只身国外奋斗所遭遇种种困难、辛酸、挫折、失落、压抑、他人期望，成功和兴奋没有了解，更遑论理解。