English

On weak weighted estimates of martingale transform

Analysis of PDEs 2018-06-13 v1 Classical Analysis and ODEs Functional Analysis

Abstract

We consider several weak type estimates for singular operators using the Bellman function approach. We disprove the A1A_1 conjecture of Muckenhoupt, which stayed open after Muckenhoupt--Wheeden's conjecture was disproved by Reguera--Thiele.

Keywords

Cite

@article{arxiv.1612.03958,
  title  = {On weak weighted estimates of martingale transform},
  author = {Fedor Nazarov and Alexander Reznikov and Vasily Vasyunin and Alexander Volberg},
  journal= {arXiv preprint arXiv:1612.03958},
  year   = {2018}
}

Comments

25 pages

R2 v1 2026-06-22T17:21:37.462Z