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arXiv 2512.03480math.DGmath.AGmath.CO
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关于平稳实矩阵施布特簇的研究

On stationary real matrix Schubert varieties

Jaehoon Lee, Sangwoo Park, Eungbeom Yeon

AI总结:

本文研究了实矩阵施布特簇的平稳性,证明了特定条件下其极小性,并揭示了相关簇的结构特性。

摘要:

在本文中,我们研究了实矩阵施布特簇在第一变分下的平稳性条件。我们首先证明,其开稠密正则部分成为极小子流形的必要条件是相应的部分排列是 vexillary 的。在 vexillary 的部分排列中,我们通过几何论证证明,当罗特图是格拉斯曼型且至多有两个连通分量时,其极小性成立。我们进一步得出结论,那些分解为这种类型乘积的簇也是极小的。这些簇包括所有行列式簇以及一些新的极小锥。

英文摘要:

In this paper, we study when a real matrix Schubert variety is stationary with respect to the first variation. We first show that a necessary condition for its open dense regular part to be a minimal submanifold is that the corresponding partial permutation is vexillary. Among vexillary partial permutations, we establish minimality by a geometric argument when the Rothe diagram is of Grassmannian type and has at most two connected components. We further obtain, as a corollary, the minimality of those varieties that decompose as products of this type. These varieties include all determinantal varieties as well as some new minimal cones.

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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