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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1603.06976math.CO
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二元域上子空间设计大集的一个新系列

A new series of large sets of subspace designs over the binary field

Michael Kiermaier, Reinhard Laue, Alfred Wassermann

AI总结:

该数学研究通过构造性证明,结合计算机构造的$\text{LS}_2[3](2,4,8)$与已知结果,利用格拉斯曼流形分解的递归方法,证明了满足特定模6条件的无穷多组二元域子空间设计大集$\text{LS}_2[3](2,k,v)$的存在性。

摘要:

本文证明了存在无穷多组k和v取值的大集$\text{LS}_2[3](2,k,v)$。其精确条件为$v \geq 8$且$0 \leq k \leq v$,使得v和k模6的余数$\bar{v}$与$\bar{k}$满足$2 \leq \bar{v} < \bar{k} \leq 5$。\n 证明是构造性的,分为两部分。首先,我们通过计算机构造出$\text{LS}_2[3](2,4,8)$,即把二元域上8维向量空间的所有4维子空间集合,划分为三个互不相交的2-$(8, 4, 217)_2$子空间设计。结合已知的$\text{LS}_2[3](2,3,8)$,应用基于格拉斯曼流形分解为并的递归方法,即可构造出上述声称的大集。

英文摘要:

In this article, we show the existence of large sets $\operatorname{LS}_2[3](2,k,v)$ for infinitely many values of $k$ and $v$. The exact condition is $v \geq 8$ and $0 \leq k \leq v$ such that for the remainders $\bar{v}$ and $\bar{k}$ of $v$ and $k$ modulo $6$ we have $2 \leq \bar{v} < \bar{k} \leq 5$. The proof is constructive and consists of two parts. First, we give a computer construction for an $\operatorname{LS}_2[3](2,4,8)$, which is a partition of the set of all $4$-dimensional subspaces of an $8$-dimensional vector space over the binary field into three disjoint $2$-$(8, 4, 217)_2$ subspace designs. Together with the already known $\operatorname{LS}_2[3](2,3,8)$, the application of a recursion method based on a decomposition of the Graßmannian into joins yields a construction for the claimed large sets.

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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