
doi: 10.1007/bf01149011
Conditions are established under which matrix transformations of double series and sequences preserve strong convergence. In addition, a general Tauberian theorem is established and applied to the method of Borel.
Matrix methods for summability, Tauberian theorems, Absolute and strong summability, Multiple sequences and series
Matrix methods for summability, Tauberian theorems, Absolute and strong summability, Multiple sequences and series
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