Almost strongly regular matrices and a core theorem for double sequences |
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Authors: | Mursaleen |
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Affiliation: | Department of Mathematics, AMU, Aligarh 202002, India |
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Abstract: | The idea of almost convergence for double sequences was introduced by Moricz and Rhoades [Math. Proc. Cambridge Philos. Soc. 104 (1988) 283-294] and they also characterized the four dimensional strong regular matrices. In this paper we define and characterize the almost strongly regular matrices for double sequences and apply these matrices to establish a core theorem. |
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Keywords: | Double sequences Almost convergence Strongly regular matrices Almost strongly regular matrices Core of a double sequence |
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