Polynomials Vanishing on Cartesian Products: The Elekes-Szabó Theorem Revisited
Polynomials Vanishing on Cartesian Products: The Elekes-Szabó Theorem Revisited
复制标题
多项式在笛卡尔积上消失:重新审视 Elekes-Szabó 定理
DOI:
10.1215/00127094-3674103
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Frank de Zeeuw
中科院分区:
文献类型:
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作者:
O. Raz;M. Sharir;Frank de Zeeuw
Let F 2 C[x; y; z] be a constant-degree polynomial, and let A; B; C subset of C be finite sets of size n. We show that F vanishes on at most O(n(11/6))points of the Cartesian product A X B X C, unless F has a special group-related form. This improves a theorem of Elekes and Szab and generalizes a result of Raz, Sharir, and Solymosi. The same statement holds over R, and a similar statement holds when A; B; C have different sizes (with a more involved bound replacing O(n(11/6)). This result provides a unified tool for improving bounds in various Erdos-type problems in combinatorial geometry, and we discuss several applications of this kind.