Kolmogorov complexity and computably enumerable sets
Logic
2013-11-28 v2 Information Theory
math.IT
Abstract
We study the computably enumerable sets in terms of the: (a) Kolmogorov complexity of their initial segments; (b) Kolmogorov complexity of finite programs when they are used as oracles. We present an extended discussion of the existing research on this topic, along with recent developments and open problems. Besides this survey, our main original result is the following characterization of the computably enumerable sets with trivial initial segment prefix-free complexity. A computably enumerable set is -trivial if and only if the family of sets with complexity bounded by the complexity of is uniformly computable from the halting problem.
Cite
@article{arxiv.1111.4339,
title = {Kolmogorov complexity and computably enumerable sets},
author = {George Barmpalias and Angsheng Li},
journal= {arXiv preprint arXiv:1111.4339},
year = {2013}
}