English

On wavelet polynomials and Weyl multipliers

Classical Analysis and ODEs 2025-12-09 v1

Abstract

For the wavelet type orthonormal systems ϕn\phi_n, we establish a new bound \begin{equation} \left\|\max_{1\le m\le n}\left|\sum_{j\in G_m}\langle f,\phi_j\rangle \phi_j\right|\right\|_p\lesssim \sqrt{\log (n+1)}\cdot \|f\|_p,\quad 1<p<\infty, \end{equation} where GmNG_m\subset N are arbitrary sets of indexes. Using this estimate, we prove that logn\log n is an almost everywhere convergence Weyl multiplier for any orthonormal system of non-overlapping wavelet polynomials. It will also be remarked that logn\log n is the optimal sequence in this context.

Keywords

Cite

@article{arxiv.2104.03124,
  title  = {On wavelet polynomials and Weyl multipliers},
  author = {Anna Kamont and Grigori A. Karagulyan},
  journal= {arXiv preprint arXiv:2104.03124},
  year   = {2025}
}

Comments

17 pages. arXiv admin note: text overlap with arXiv:2005.04017

R2 v1 2026-06-24T00:55:26.175Z