Improved lower bound on the size of Kakeya sets over finite fields
Improved lower bound on the size of Kakeya sets over finite fields
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改进了有限域上 Kakeya 集大小的下界
DOI:
10.2140/apde.2008.1.375
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
M. Sudan
中科院分区:
文献类型:
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作者:
Shubhangi Saraf;M. Sudan
In a recent breakthrough, Dvir showed that every Kakeya set in $\F^n$ must be of cardinality at least $c_n |\F|^n$ where $c_n \approx 1/n!$. We improve this lower bound to $\beta^n |\F|^n$ for a constant $\beta > 0$. This pins down the growth of the leading constant to the right form as a function of $n$.