A Theorem On Summability Factors for the Natarajan Method in Ultrametric Fields

Natarajan PN

Published on: 2023-01-23

Abstract

In this paper, ???? denotes a complete, non-trivially valued, non-archimedean (or ultra-metric) field.
Double sequences, double series and 4-dimensional infinite matrices have entries in ????. We prove a
theorem on summability factors for the (????, ????????,????) (or the Natarajan) method.