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arXiv 2602.02668math.AGmath.CO
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奇美切片的正交矩阵

Marvelous slices of orthogonal matrices

University of Western Ontario(韦仕敦大学)

Taylor Brysiewicz, Fulvio Gesmundo

AI总结:

本文研究了4×4特殊正交矩阵空间的分解结构,并展示了如何通过立方octahedron编码其交集,同时探讨了SO(5)和SO(6)的类似分解可能性。

摘要:

4×4特殊正交矩阵空间在对角线上有零分解为14个不可约曲面的并集,其交集由立方octahedron美丽地编码。利用这种分解,我们展示了SO(4)的 totally real witness set。我们解释了如何为SO(5)获得类似的分解,其中64个组件可以分组以获得与3-多面体面格的对应关系。我们证明对于SO(6)不存在这样的模式。

英文摘要:

The space of $4 \times 4$ special orthogonal matrices with zeros on the diagonal decomposes into the union of $14$ irreducible surfaces whose intersections are beautifully encoded by the cuboctahedron. Using this decomposition, we exhibit a totally real witness set for $SO(4)$. We explain how to obtain a similar decomposition for $SO(5)$, where the $64$ components can be grouped to obtain such a correspondence with the face lattice of a $3$-polytope. We show that no such pattern exists for $SO(6)$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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