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This topic created in 2037 days ago, the information mentioned may be changed or developed.
python 或 sage 有没有哪个函数可以求指定向量的模？进行点乘运算，叉乘运算？求相关的库名称已经代码示例，谢谢！
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zhzy Oct 1, 2020 via iPhone
numpy
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2
Tony042 Oct 1, 2020
numpy，或者自己求模就是该矩阵的 hermitian matrix 乘以它本身，点乘就是求模开个方，叉乘算 det
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TransAM Oct 1, 2020 via Android
numpy 的话：
mod = np.sum(arr ** 2) ** 0.5 |
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