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1. www.zhihu.com › question › 425932485设A，B为同阶可逆方阵，则存在可逆方阵P,Q使PAQ=B为什么？ - 知乎簡

   www.zhihu.com › question › 425932485

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   2020年10月16日 · 务实的理想主义者. 从吾心，尽吾志。 谢邀 @Young Charles. 存在可逆方阵P、Q，使PAQ=B，A、B又是同型，则说明A、B等价。 因此，需要解释A、B为什么等价。 A、B是 同阶可逆方阵 。 因为可逆，所以行等价于 单位阵 E；因为同型，所以各自等价的单位阵E相同。 A、B可以通过初等行变化化为相同的 矩阵 ，所以A、B等价。 发布于 2021-07-20 04:22. 知乎，中文互联网高质量的问答社区和创作者聚集的原创内容平台，于 2011 年 1 月正式上线，以「让人们更好的分享知识、经验和见解，找到自己的解答」为品牌使命。

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   • We sell water butts, compost bins, nest boxes and a huge range of pollinating plants, and we help customers to grow their own produce and support wildlife in their gardens. B&Q aims to help customers to enjoy better homes by reducing the risks posed by some chemicals and finding more ways to make millions of homes safer.

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   How many B & Q stores are there in the UK?

   • Here is a list of 372 uk B And Q Store Locations. Click on the links below to get more information on your local B And Q Store including postal address, telephone number, postcode and even a store location map via streetmap. SatNav coordinates have also been added as well as the B And Q online store website links if you prefer to shop online.

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