On a Recent Paper Devoted to Jackson-Type Inequalities and Walsh-Fourier Transform
We show that the results of a recently published paper are incorrect. Also we introduce a $$K$$ -functional for functions define on $$\mathbb R_+$$ and prove direct and inverse approximation theorems connecting the best approximations by special subspaces of piecewise constant functions and this $$K$$ -functiona
Authors
- С. С. Волосивец (ORCID: https://orcid.org/0000-0001-6870-0597)
Institutions
- Saratov State University (RU)
Publication Details
- Journal
- P-Adic Numbers Ultrametric Analysis and Applications
- Published
- 2025-11-10
- DOI
- https://doi.org/10.1134/s2070046625040077
- Primary Topic
- Mathematical Approximation and Integration
- Type
- article
- Field-Weighted Citation Impact
- 0.00