标积又称内积,又称数量积(scalar product)、点积(dot product) 它是一种矢量运算,但其结果为某一数值,并非向量。
可以认出,此表达式正好就是标积。
一个矢量自身相乘的标积等于该矢量大小的平方。
The scalar product of a vector with itself is the square of the magnitude of the vector.
在适当地选取了半单李代数的根系之后,就可算出初等表示权的标积。
When the set of roots for a semi-simple Lie algebra have been selected appropriately, the scalar product of the weights of the elementary representation can be calculated.
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