Browsing Dergiler / Journals by Subject "4-dimensional infinite matrix"
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A theorem on summability factors for the Nörlund method for double series in ultrametric fields
(Işık University Press, 2020)Throughout this paper, K denotes a complete, non-trivially valued, ultrametric (or non-archimedean) field. 4-dimensional infinite matrices, double sequences and double series have entries in K. In this paper, we prove a ...