Sever, Yurdal; Altay, Bilal On the core of double sequences. (English) Zbl 1351.40008 Sarajevo J. Math. 11(24), No. 2, 273-282 (2015). MSC: 40B05 40C05 PDFBibTeX XMLCite \textit{Y. Sever} and \textit{B. Altay}, Sarajevo J. Math. 11(24), No. 2, 273--282 (2015; Zbl 1351.40008)
Gökhan, A.; Çolak, R.; Mursaleen, M. Some matrix transformations and generalized core of double sequences. (English) Zbl 1197.40004 Math. Comput. Modelling 49, No. 7-8, 1721-1731 (2009). MSC: 40C05 PDFBibTeX XMLCite \textit{A. Gökhan} et al., Math. Comput. Modelling 49, No. 7--8, 1721--1731 (2009; Zbl 1197.40004) Full Text: DOI
Mursaleen; Edely, Osama H. H. Almost convergence and a core theorem for double sequences. (English) Zbl 1043.40003 J. Math. Anal. Appl. 293, No. 2, 532-540 (2004). MSC: 40A05 PDFBibTeX XMLCite \textit{Mursaleen} and \textit{O. H. H. Edely}, J. Math. Anal. Appl. 293, No. 2, 532--540 (2004; Zbl 1043.40003) Full Text: DOI
Mursaleen Almost strongly regular matrices and a core theorem for double sequences. (English) Zbl 1043.40002 J. Math. Anal. Appl. 293, No. 2, 523-531 (2004). MSC: 40A05 PDFBibTeX XMLCite \textit{Mursaleen}, J. Math. Anal. Appl. 293, No. 2, 523--531 (2004; Zbl 1043.40002) Full Text: DOI