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第三百五十四章 埃尔米特流形(流形)(1 / 1)

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埃尔米特在想:“什么是流形?”

流水、旋涡、引力场的形状,各种各样的形状在埃尔米特的脑海里变换着。

埃尔米特说:“需要有一种可以度量流形的方法。”

埃尔米特认为,先去度量流形中每个点之间的长度,也就是一种弧长,然后再去度量流形中线与线直接的夹角,然后再去计算面积。

而体积如何去计算?在概念上的理解就是流水的体积会有稀疏和密集的阶段。

如果计算总得面积,那就忽略了稀疏地方的空隙。

如果要把稀疏中空隙刨去,那么就对于稀疏的程度要进行计算了。

这越想越乱。

埃尔米特说:“要不然,我换一个思维。如果我不去想这个问题,我就直接根据我当下的数学工具来直接计算即可。”

埃尔米特写出了埃尔米特度量的形式,是直接计算共形向量场中两点之间距离的。这个向量场的流形跟陈省身示性数有关。

埃尔米特流形是一类重要的复流形,具有埃尔米特度量的复流形称为埃尔米特流形。

其中的系数是一个矩阵的形式,这个形式直接决定了向量场的形状。在不同的环境下,这个矩阵中的系数都是不一样的。

埃尔米特微笑表示,天下所有各种各样的流形都能用他的这个矩阵来度量计算。所以各个流形只需要用自己这个矩阵进行表示即可。

喜欢数学心请大家收藏:数学心本站更新速度全网最快。

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