English

Necessary conditions for vector-valued operator inequalities in harmonic analysis

Classical Analysis and ODEs 2010-03-15 v1

Abstract

Via a random construction we establish necessary conditions for Lp(q)L^p(\ell^q) inequalities for certain families of operators arising in harmonic analysis. In particular we consider dilates of a convolution kernel with compactly supported Fourier transform, vector maximal functions acting on classes of entire functions of exponential type, and a characterization of Sobolev spaces by square functions and pointwise moduli of smoothness.

Keywords

Cite

@article{arxiv.math/0504030,
  title  = {Necessary conditions for vector-valued operator inequalities in harmonic analysis},
  author = {Michael Christ and Andreas Seeger},
  journal= {arXiv preprint arXiv:math/0504030},
  year   = {2010}
}