English

The A_2 theorem with the Dini condition

Classical Analysis and ODEs 2013-04-30 v2

Abstract

Let TT be an L2L^2-bounded operator having an ω\omega-Calder\'on--Zygmund kernel KK with a modulus of continuity ω\omega. If ω\omega satisfied the Dini condition 01ω(t)\udt/t<\int_0^1\omega(t)\ud t/t<\infty, then TT satisfies the A2A_2 theorem \NormTfL2(w)[w]A2\NormfL2(w) \Norm{Tf}{L^2(w)}\lesssim [w]_{A_2}\Norm{f}{L^2(w)} and many related estimates, as a consequence of a domination by dyadic operators.

Keywords

Cite

@article{arxiv.1212.3842,
  title  = {The A_2 theorem with the Dini condition},
  author = {Tuomas P. Hytönen},
  journal= {arXiv preprint arXiv:1212.3842},
  year   = {2013}
}

Comments

This paper has been withdrawn by the author due to a crucial error in the argument. The validity of the claimed main theorem remains open

R2 v1 2026-06-21T22:55:18.711Z