Probabilistic constructions in continuous combinatorics and a bridge to distributed algorithms
Probabilistic constructions in continuous combinatorics and a bridge to distributed algorithms
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连续组合中的概率构造和分布式算法的桥梁
DOI:
10.1016/j.aim.2023.108895
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发表时间:
2023
影响因子:
1.7
通讯作者:
Bernshteyn, Anton
中科院分区:
文献类型:
--
作者:
Bernshteyn, Anton
The probabilistic method is a technique for proving combinatorial existence results by means of showing that a randomly chosen object has the desired properties with positive probability. A particularly powerful probabilistic tool is the Lovász Local Lemma (the LLL for short), which was introduced by Erdős and Lovász in the mid-1970s. Here we develop a version of the LLL that can be used to prove the existence of continuous colorings. We then give several applications in Borel and topological dynamics.• Seward and Tucker-Drob showed that every free Borel action Γ↷ X of a countable group Γ admits an equivariant Borel map π: X→ Y to a free subshift Y⊂ 2 Γ. We give a new simple proof of this result.• We show that for a countable group Γ, Free (2 Γ) is weakly contained, in the sense of Elek, in every free continuous action of Γ on a zero-dimensional Polish space. This fact is analogous to the theorem of Abért and Weiss for probability measure-preserving actions and has a number of consequences in continuous combinatorics. In particular, we deduce that a coloring problem admits a continuous solution on Free (2 Γ) if and only if it can be solved on finite subgraphs of the Cayley graph of Γ by an efficient deterministic distributed algorithm (this fact was also proved independently and using different methods by Seward). This establishes a formal correspondence between questions that have been studied independently in continuous combinatorics and in distributed computing.
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影响因子:
3.1
作者:
Anton Bernshteyn
通讯作者:
Anton Bernshteyn
影响因子:
1.6
作者:
Chang, Yi-Jun;Kopelowitz, Tsvi;Pettie, Seth
通讯作者:
Pettie, Seth
影响因子:
0.8
作者:
Su Gao;S. Jackson;Brandon Seward
通讯作者:
Brandon Seward
影响因子:
0.8
作者:
Brandon Seward;Robin D. Tucker
通讯作者:
Robin D. Tucker
DOI:
--
发表时间:
2019
期刊:
ACM SIGACT-SIGOPS Symposium on Principles of Distributed Computing
影响因子:
--
作者:
S. Brandt;Yannic Maus;Jara Uitto
通讯作者:
Jara Uitto