English

Polynomial Approximation and $\omega^r_\phi (f,t)$ Twenty Years Later

Classical Analysis and ODEs 2007-09-19 v1 Functional Analysis

Abstract

About twenty years ago the measure of smoothness ωϕr(f,t)\omega ^r_\phi (f,t) was introduced and related to the rate of polynomial approximation. In this article we survey developments about this and related concepts since that time.

Keywords

Cite

@article{arxiv.0709.2729,
  title  = {Polynomial Approximation and $\omega^r_\phi (f,t)$ Twenty Years Later},
  author = {Z. Ditzian},
  journal= {arXiv preprint arXiv:0709.2729},
  year   = {2007}
}
R2 v1 2026-06-21T09:18:31.482Z