English

Moduli of continuity and absolute continuity: any relation?

Classical Analysis and ODEs 2025-01-03 v1 Functional Analysis

Abstract

We construct a monotone, continuous, but not absolutely continuous function whose minimal modulus of continuity is absolutely continuous. In particular, we establish that there is no equivalence between the absolute continuity of a function and the absolute continuity of its modulus of continuity, in contrast with a well-known property of Lipschitz functions.

Keywords

Cite

@article{arxiv.2501.00441,
  title  = {Moduli of continuity and absolute continuity: any relation?},
  author = {Matteo Muratori and Jacopo Somaglia},
  journal= {arXiv preprint arXiv:2501.00441},
  year   = {2025}
}
R2 v1 2026-06-28T20:53:21.605Z