Most numbers are not normal
Number Theory
2022-11-30 v3 General Topology
Abstract
We show, from a topological viewpoint, that most numbers are not normal in a strong sense. More precisely, the set of numbers with the following property is comeager: for all integers and , the sequence of vectors made by the frequencies of all possibile strings of length in the -adic representation of has a maximal subset of accumulation points, and each of them is the limit of a subsequence with an index set of nonzero asymptotic density. This extends and provides a streamlined proof of the main result given by Olsen in [Math. Proc. Cambridge Philos. Soc. 137 (2004), 43--53]. We provide analogues in the context of analytic P-ideals and regular matrices.
Cite
@article{arxiv.2101.03607,
title = {Most numbers are not normal},
author = {Andrea Aveni and Paolo Leonetti},
journal= {arXiv preprint arXiv:2101.03607},
year = {2022}
}
Comments
Accepted in Mathematical Proceedings of the Cambridge Philosophical Society