A sharp inverse Littlewood‐Offord theorem
A sharp inverse Littlewood‐Offord theorem
复制标题
锐利特伍德-奥福德逆定理
DOI:
10.1002/rsa.20327
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发表时间:
2009
影响因子:
1
通讯作者:
V. Vu
中科院分区:
文献类型:
--
作者:
T. Tao;V. Vu
Let ηi,i = 1,…,n be iid Bernoulli random variables. Given a multiset vof n numbers v1,…,vn, the concentration probability P1(v) of v is defined as P1(v) := supxP(v1η1+ …vnηn = x). A classical result of Littlewood–Offord and Erdős from the 1940s asserts that if the vi are nonzero, then this probability is at most O(n‐1/2). Since then, many researchers obtained better bounds by assuming various restrictions on v.