Probabilistic Constructions of Computable Objects and a Computable Version of Lovász Local Lemma
Probabilistic Constructions of Computable Objects and a Computable Version of Lovász Local Lemma
复制标题
可计算对象的概率构造和 Lovász 局部引理的可计算版本
DOI:
10.3233/fi-2014-1029
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
A. Shen
中科院分区:
文献类型:
--
作者:
A. Rumyantsev;A. Shen
A nonconstructive proof can be used to prove the existence of an object with some properties without providing an explicit example of such an object. A special case is a probabilistic proof where we show that an object with required properties appears with some positive probability in some random process. Can we use such arguments to prove the existence of a computable infinite object? Sometimes yes: following [8], we show how the notion of a layerwise computable mapping can be used to prove a computable version of Lovasz local lemma.