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Dec 3, 2018 at 15:11 answer added user125345 timeline score: 3
Dec 3, 2018 at 11:20 answer added zabroshenie goroda timeline score: 1
Dec 2, 2018 at 8:54 comment added Zhi-Wei Sun Note that the dot product of two vectors $(a_1,\ldots,a_n)$ and $(b_1,\ldots,b_n)$ is $\sum_{k=1}^na_kb_k$.
Dec 2, 2018 at 8:44 history edited Zhi-Wei Sun CC BY-SA 4.0
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Dec 2, 2018 at 8:24 history edited Zhi-Wei Sun CC BY-SA 4.0
edited title
Dec 2, 2018 at 5:53 history edited Zhi-Wei Sun CC BY-SA 4.0
deleted 1 character in body
Dec 2, 2018 at 5:48 history edited Zhi-Wei Sun CC BY-SA 4.0
deleted 1 character in body
Dec 2, 2018 at 5:40 history asked Zhi-Wei Sun CC BY-SA 4.0