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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:59, 2 January 2019 | 1,054 × 397 (6 KB) | TilmannR | {{Information |description ={{en|1=Gerver's sofa, a lower bound for the {{W|moving sofa problem||en}}.}} |date =2019-01-02 |source ={{own}} |author ={{U|TilmannR}} |other versions=left|120px }} Category:Recreational mathematics Category:Couches |
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