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本书中 "外积" 有无精确对应?

Open lgr1230 opened this issue 1 year ago • 2 comments

问题起因:

Page 18 | Chapter 4 矩阵 中 image 外积展开: 向量->矩阵,再求和

发现问题:

Page 2 | Chapter 2 向量运算 中 屏幕截图 2023-05-22 153445 Page 29 | Chapter 2 向量运算 中 image Page 34 | Chapter 2 向量运算 中 image

所以,本书 到底将"外积"对应什么? 叉积? 还是张量积? 或者说, 没有标准, 根据上下文灵活处理?

维基百科-外积(消歧义):

image

lgr1230 avatar May 22 '23 07:05 lgr1230

这一处确实麻烦,我会专门说明。鸢尾花书,一般会用张量积这个名称。

请继续批评。

Cheers, James

On Mon, May 22, 2023 at 3:54 AM 封与疯 @.***> wrote:

问题起因:

Page 18 | Chapter 4 矩阵 中 [image: image] https://user-images.githubusercontent.com/69034009/239835311-3bbd97c1-a8a0-4b5b-90e7-1d715a45a181.png 外积展开: 向量->矩阵,再求和 发现问题:

Page 2 | Chapter 2 向量运算 中 [image: 屏幕截图 2023-05-22 153445] https://user-images.githubusercontent.com/69034009/239837049-6fa10d4a-b13a-4d0a-8c82-b34325df61da.png Page 29 | Chapter 2 向量运算 中 [image: image] https://user-images.githubusercontent.com/69034009/239837418-b7ac1086-c7a8-4705-873e-2fd47846692c.png Page 34 | Chapter 2 向量运算 中 [image: image] https://user-images.githubusercontent.com/69034009/239837748-b5272a69-cbf4-4c46-ac01-f55275aba51a.png

所以,本书 到底将"外积"对应什么? 叉积? 还是张量积? 或者说, 没有标准, 根据上下文灵活处理? 维基百科-外积(消歧义) https://zh.wikipedia.org/wiki/%E5%A4%96%E7%A9%8D_(%E6%B6%88%E6%AD%A7%E7%BE%A9) :

[image: image] https://user-images.githubusercontent.com/69034009/239839139-9bd0156e-d5af-4775-a1f6-7b6344145600.png

— Reply to this email directly, view it on GitHub https://github.com/Visualize-ML/Book4_Power-of-Matrix/issues/35, or unsubscribe https://github.com/notifications/unsubscribe-auth/AZHC6V4MNMG3ZUBVUL4GWBDXHMLTDANCNFSM6AAAAAAYKBNFIM . You are receiving this because you are subscribed to this thread.Message ID: @.***>

Visualize-ML avatar May 22 '23 16:05 Visualize-ML

外积展开,是习惯说法,应该不会修改。

On Mon, May 22, 2023 at 12:07 PM James Jiang @.***> wrote:

这一处确实麻烦,我会专门说明。鸢尾花书,一般会用张量积这个名称。

请继续批评。

Cheers, James

On Mon, May 22, 2023 at 3:54 AM 封与疯 @.***> wrote:

问题起因:

Page 18 | Chapter 4 矩阵 中 [image: image] https://user-images.githubusercontent.com/69034009/239835311-3bbd97c1-a8a0-4b5b-90e7-1d715a45a181.png 外积展开: 向量->矩阵,再求和 发现问题:

Page 2 | Chapter 2 向量运算 中 [image: 屏幕截图 2023-05-22 153445] https://user-images.githubusercontent.com/69034009/239837049-6fa10d4a-b13a-4d0a-8c82-b34325df61da.png Page 29 | Chapter 2 向量运算 中 [image: image] https://user-images.githubusercontent.com/69034009/239837418-b7ac1086-c7a8-4705-873e-2fd47846692c.png Page 34 | Chapter 2 向量运算 中 [image: image] https://user-images.githubusercontent.com/69034009/239837748-b5272a69-cbf4-4c46-ac01-f55275aba51a.png

所以,本书 到底将"外积"对应什么? 叉积? 还是张量积? 或者说, 没有标准, 根据上下文灵活处理? 维基百科-外积(消歧义) https://zh.wikipedia.org/wiki/%E5%A4%96%E7%A9%8D_(%E6%B6%88%E6%AD%A7%E7%BE%A9) :

[image: image] https://user-images.githubusercontent.com/69034009/239839139-9bd0156e-d5af-4775-a1f6-7b6344145600.png

— Reply to this email directly, view it on GitHub https://github.com/Visualize-ML/Book4_Power-of-Matrix/issues/35, or unsubscribe https://github.com/notifications/unsubscribe-auth/AZHC6V4MNMG3ZUBVUL4GWBDXHMLTDANCNFSM6AAAAAAYKBNFIM . You are receiving this because you are subscribed to this thread.Message ID: @.***>

Visualize-ML avatar May 22 '23 16:05 Visualize-ML