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arXiv 1507.05375math.RA
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再论有界秩矩阵的大空间

Large spaces of bounded rank matrices revisited

Clément de Seguins Pazzis

摘要:

令$n,p,r$是正整数,其中$n \geq p\geq r$。$p$矩阵的$n$的秩- $\overline{r}$子集(字段中有条目)是其中每个矩阵的秩小于或等于$r$的子集。Flanders的一个经典定理指出秩- $\overline{r}$线性子空间的维数必须小于或等于$nr$,并用临界维数$nr$刻画了空间.维数接近临界维数的线性子空间后来由阿特金森、劳埃德和比斯利在具有大基数的域上进行了研究;他们的结果最近被推广到所有域。利用一种新的方法,得到了域上大维数秩- $\overline{r}$仿射子空间的分类。这种分类,然后被用来加倍的范围(大)的尺寸,其中的结构排名$\overline{r}$ -线性子空间是已知的所有领域。

英文摘要:

Let $n,p,r$ be positive integers with $n \geq p\geq r$. A rank-$\overline{r}$ subset of $n$ by $p$ matrices (with entries in a field) is a subset in which every matrix has rank less than or equal to $r$. A classical theorem of Flanders states that the dimension of a rank-$\overline{r}$ linear subspace must be less than or equal to $nr$, and it characterizes the spaces with the critical dimension $nr$. Linear subspaces with dimension close to the critical one were later studied by Atkinson, Lloyd and Beasley over fields with large cardinality; their results were recently extended to all fields. Using a new method, we obtain a classification of rank-$\overline{r}$ affine subspaces with large dimension, over all fields. This classification is then used to double the range of (large) dimensions for which the structure of rank $\overline{r}$-linear subspaces is known for all fields.

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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