The discrepancy of random rectangular matrices
The discrepancy of random rectangular matrices
复制标题
随机矩形矩阵的差异
DOI:
10.1002/rsa.21054
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发表时间:
2022
影响因子:
1
通讯作者:
Niles‐Weed, Jonathan
中科院分区:
文献类型:
--
作者:
Altschuler, Dylan J.;Niles‐Weed, Jonathan
A recent approach to the Beck–Fiala conjecture, a fundamental problem in combinatorics, has been to understand when random integer matrices have constant discrepancy. We give a complete answer to this question for two natural models: matrices with Bernoulli or Poisson entries. For Poisson matrices, we further characterize the discrepancy for any rectangular aspect ratio. These results give sharp answers to questions of Hoberg and Rothvoß (SODA 2019) and Franks and Saks (Random Structures Algorithms2020). Our main tool is a conditional second moment method combined with Stein's method of exchangeable pairs. While previous approaches are limited to dense matrices, our techniques allow us to work with matrices of all densities. This may be of independent interest for other sparse random constraint satisfaction problems.
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DOI:
--
发表时间:
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期刊:
影响因子:
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通讯作者:
J. Spencer
DOI:
10.4230/lipics.icalp.2020.93
发表时间:
2019
期刊:
Proceedings of the 50th Annual ACM SIGACT Symposium on Theory of Computing
影响因子:
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Aditya Potukuchi
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10.1145/3313276.3316383
发表时间:
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期刊:
Proceedings of the 51st Annual ACM SIGACT Symposium on Theory of Computing
影响因子:
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影响因子:
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