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感觉四维正多胞体的球极投影与三维的正多面体球极投影很相似

Floor 1 魔法绿骑士 4/9/11 21:07
rt
Floor 2 4Der 4/10/11 8:56
我觉得正二十面体的球极投影就和正600胞体的球极投影很相似。

正四面体和正五胞体也很相似(球极投影,下同),

正方体和正八胞体、正八面体和正16cell,正12面体和120胞体。。

Floor 3 4Der 4/10/11 8:56
Floor 5 yaoliding 4/10/11 12:20
因为它们都是正立方形(n-cube),所以投影会成类比关系

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