Some saturation classes for deferred Riesz and deferred Nörlund means
Year: 2025
Type: article
Abstract: One of main problem in approximation theory is determination a saturation class for given method. The problem of determining a saturation class has been considered by Zamanski, Sunouchi and Watari and others. Mohaparta and Russel have considered some direct and inverse theorems in approximation of functions. Sunouchi and Watari have studied the Riesz means of type \(n\). In [5], Goel et al. have extended these results by considering Nörlund means. In this paper, we examine some direct and inverse theorems in approximation of functions under weaker conditions by considering Deferred Riesz means and Deferred Nörlund means. Also, we extent above mentioned results.
Authors: Şeyda Sezgek, İlhan Dağadur, Cumali Çatal
Institution: Mersin Üniversitesi
Language: English
Subfield: Statistics and Probability
Field: Mathematics
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4410952629