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- Title
Statistical Deferred Nörlund Summability and Korovkin-Type Approximation Theorem.
- Authors
Srivastava, Hari Mohan; Jena, Bidu Bhusan; Paikray, Susanta Kumar
- Abstract
The concept of the deferred Nörlund equi-statistical convergence was introduced and studied by Srivastava et al. [Rev. Real Acad. Cienc. Exactas Fís. Nat. Ser. A Mat. (RACSAM) 112 (2018), 1487–1501]. In the present paper, we have studied the notion of the deferred Nörlund statistical convergence and the statistical deferred Nörlund summability for sequences of real numbers defined over a Banach space. We have also established a theorem presenting a connection between these two interesting notions. Moreover, based upon our proposed methods, we have proved a new Korovkin-type approximation theorem with algebraic test functions for a sequence of real numbers on a Banach space and demonstrated that our theorem effectively extends and improves most of the earlier existing results (in classical and statistical versions). Finally, we have presented an example involving the generalized Meyer–König and Zeller operators of a real sequence demonstrating that our theorem is a stronger approach than its classical and statistical versions.
- Subjects
BANACH spaces; REAL numbers; ALGEBRAIC functions; POSITIVE operators; LINEAR operators; MATHEMATICAL sequences
- Publication
Mathematics (2227-7390), 2020, Vol 8, Issue 4, p636
- ISSN
2227-7390
- Publication type
Article
- DOI
10.3390/math8040636