English

A Fourier Frame for the Middle-Third Cantor Measure

Classical Analysis and ODEs 2018-12-20 v2

Abstract

In this paper we show that if μ\mu is any locally and uniformly α\alpha-dimensional measure supported on a α\alpha-quasi-regular set EE, then L2(μ)L^2(\mu) admits a frame of exponentials. In particular, for the uniform middle third Cantor measure, μC,\mu_C, our result shows that there exists a countable set Λ\Lambda such that {e2πitλ}λΛ\{e^{2\pi i t \lambda}\}_{\lambda \in \Lambda} is a frame for L2(μC)L^2(\mu_C) (i.e. the measure μC\mu_C admits a generalized spectrum), answering an old outstanding question about the existence of a frame of exponentials for the space L2(μC)L^2(\mu_C).

Keywords

Cite

@article{arxiv.1812.05708,
  title  = {A Fourier Frame for the Middle-Third Cantor Measure},
  author = {Carlos Cabrelli and Ursula Molter},
  journal= {arXiv preprint arXiv:1812.05708},
  year   = {2018}
}

Comments

The paper contains a gap in the proof of Theorem 3.3. We would like to thank Chun-Kit Lai for pointing out the error. As a consequence we want to withdraw the paper

R2 v1 2026-06-23T06:42:05.872Z