Abstract
In this paper, necessary and sufficient conditions that the real doubly infinite matrixA sums every strongly almost convergent double sequence, leaving the limit invariant, have been determined.
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References
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Başarir, M. On the strong almost convergence of double sequences. Period Math Hung 30, 177–181 (1995). https://doi.org/10.1007/BF01876616
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DOI: https://doi.org/10.1007/BF01876616