A characterisation of the rate of approximation of the Baskakov-Kantorovich operator

TitleA characterisation of the rate of approximation of the Baskakov-Kantorovich operator
Publication TypeJournal Article
Year of Publication2025
AuthorsDraganov B
JournalAnnuaire de l’Université de Sofia “St. Kliment Ohridski”. Faculté de Mathématiques et Informatique
Volume112
Start Page17
Pagination17-29
ISSN1313-9215 (Print) 2603-5529 (Online)
Keywords$K$-functional, Baskakov-Kantorovich operator, modulus of smoothness
Abstract

We characterise the $K$-functional that was previously shown to describe the rate of approximation of the Baskakov-Kantorovich operator in the $L_p$-spaces with the weight $(1+x)^\gamma$ with $\gamma\le 0$. The characterisation uses the Ditzian-Totik moduli of smoothness.

DOI10.60063/GSU.FMI.112.17-29
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