Necessary conditions for double summability factor theorem
Miskolc Mathematical Notes, vol.11, no.2, pp.183-190, 2010 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 11 Issue: 2
- Publication Date: 2010
- Doi Number: 10.18514/mmn.2010.251
- Journal Name: Miskolc Mathematical Notes
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.183-190
- Keywords: absolute summability factors, doubly triangular summability
- Open Archive Collection: AVESIS Open Access Collection
- İstanbul Ticaret University Affiliated: Yes
Abstract
We obtain necessary conditions for the series ΣΣcmn, which is absolutely summable of order k by a doubly triangular matrix method A, to be such that ΣΣcmnλmn is absolutely summable of order k by a doubly triangular matrix B. © 2010 Miskolc University Press.