English

Homeomorphic Changes of Variable and Fourier Multipliers

Classical Analysis and ODEs 2020-08-14 v2

Abstract

We consider the algebras MpM_p of Fourier multipliers and show that every bounded continuous function ff on Rd\mathbb R^d can be transformed by an appropriate homeomorphic change of variable into a function that belongs to Mp(Rd)M_p(\mathbb R^d) for all pp, 1<p<1<p<\infty. Moreover, under certain assumptions on a family KK of continuous functions, one change of variable will suffice for all fKf\in K. A similar result holds for functions on the torus Td\mathbb T^d. This may be contrasted with the known result on the Wiener algebra, related to Luzin's rearrangement problem.

Keywords

Cite

@article{arxiv.1803.02177,
  title  = {Homeomorphic Changes of Variable and Fourier Multipliers},
  author = {Vladimir Lebedev and Alexander Olevskii},
  journal= {arXiv preprint arXiv:1803.02177},
  year   = {2020}
}