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arXiv 1210.1002math.CO
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PG(n,q)的部分覆盖

Partial covers of PG(n,q)

Stefan Dodunekov, Leo Storme, Geertrui Van de Voorde

摘要:

本文证明了不覆盖PG(n,q)的一组q+a超平面,q>13,a<(q-10)/4,至少不覆盖q^(n-1)-aq^(n-2)点,并且证明了这个下界是尖锐的.如果非覆盖点的个数至多为q^(n-1),则我们证明所有非覆盖点都包含在一个超平面中。最后,使用Blokhuis、Brouwer和Szonyi [3]的最近结果,我们注意到这些结果有效的a的界可以改进为a<(q-2)/3,并且a的这个上界是尖锐的

英文摘要:

In this paper, we show that a set of q+a hyperplanes, q>13, a<(q-10)/4, that does not cover PG(n,q), does not cover at least q^(n-1)-aq^(n-2) points, and show that this lower bound is sharp. If the number of non- covered points is at most q^(n-1), then we show that all non-covered points are contained in one hyperplane. Finally, using a recent result of Blokhuis, Brouwer, and Szonyi [3], we remark that the bound on a for which these results are valid can be improved to a<(q-2)/3 and that this upper bound on a is sharp

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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