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张量篇-应用案例
2022-08-04 03:10:00 【GZVIMMY】
本着为我们工程朋友实用主义，本章抛弃严谨和细节从例子开始：
这两个符号时经常使用的，Levi–Civita符号中的奇偶排列这样判断：123为偶排列，变换任意两项则为奇排列，在变换任意两项则为偶排。
1.用这东西来表示行列式是很安逸的：
这玩意就是一个三阶张量吗，因为根据定义有：
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