English

On series of dilated functions

Classical Analysis and ODEs 2017-07-20 v1

Abstract

Given a periodic function ff, we study the almost everywhere and norm convergence of series k=1ckf(kx)\sum_{k=1}^\infty c_k f(kx). As the classical theory shows, the behavior of such series is determined by a combination of analytic and number theoretic factors, but precise results exist only in a few special cases. In this paper we use connections with orthogonal function theory and GCD sums to prove several new results, improve old ones and also to simplify and unify the theory.

Keywords

Cite

@article{arxiv.1205.1326,
  title  = {On series of dilated functions},
  author = {Istvan Berkes and Michel Weber},
  journal= {arXiv preprint arXiv:1205.1326},
  year   = {2017}
}

Comments

21 pages

R2 v1 2026-06-21T20:59:28.100Z