English

Direct and inverse approximation theorems of functions in the Orlicz type spaces S_M

Classical Analysis and ODEs 2020-04-22 v1

Abstract

In the Orlicz type spaces SM{\mathcal S}_{M}, we prove direct and inverse approximation theorems in terms of the best approximations of functions and moduli of smoothness of fractional order. We also show the equivalence between moduli of smoothness and Peetre KK-functionals in the spaces SM{\mathcal S}_{M}.

Keywords

Cite

@article{arxiv.1901.07253,
  title  = {Direct and inverse approximation theorems of functions in the Orlicz type spaces S_M},
  author = {Stanislav Chaichenko and Andrii Shidlich and Fahreddin Abdullayev},
  journal= {arXiv preprint arXiv:1901.07253},
  year   = {2020}
}