On the missing log in upper tail estimates
On the missing log in upper tail estimates
复制标题
关于上尾估计中缺失的日志
DOI:
10.1016/j.jctb.2019.05.003
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Warnke, Lutz
中科院分区:
文献类型:
--
作者:
Warnke, Lutz
In the late 1990s, Kim and Vu pioneered an inductive method for showing concentration of certain random variables X. Shortly afterwards, Janson and Ruciński developed an alternative inductive approach, which often gives comparable results for the upper tail P (X≥(1+ ε) E X). In some cases, both methods yield upper tail estimates which are best possible up to a logarithmic factor in the exponent, but closing this narrow gap has remained a technical challenge. In this paper we present a BK-inequality based combinatorial sparsification idea that can recover this missing logarithmic term in the upper tail. As an illustration, we consider random subsets of the integers {1,…, n}, and prove sharp upper tail estimates for various objects of interest in additive combinatorics. Examples include the number of arithmetic progressions, Schur triples, additive quadruples, and (r, s)-sums.
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影响因子:
0.7
作者:
Matas Šileikis
通讯作者:
Matas Šileikis
DOI:
--
发表时间:
2004
期刊:
Comb.
影响因子:
--
作者:
S. Janson;A. Rucinski
通讯作者:
A. Rucinski
DOI:
10.37236/8493
发表时间:
2020
期刊:
The Electronic Journal of Combinatorics
影响因子:
--
作者:
Šileikis, Matas;Warnke, Lutz
通讯作者:
Warnke, Lutz
影响因子:
1
作者:
Šileikis, Matas;Warnke, Lutz
通讯作者:
Warnke, Lutz
影响因子:
1
作者:
V. Vu
通讯作者:
V. Vu