#9 第3章附加题2

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opened 3 years ago by 黄定江 · 0 comments

证明:

证明:![](https://render.githubusercontent.com/render/math?math=\left\|AB\right\|_F\leq\left\|A\right\|_F\left\|B\right\|_F)。
黄定江 added the
距离和投影
label 3 years ago
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