Mercerian theorem for four dimensional matrices

Abstract

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Keywords

• Double sequence, double series, Pringsheim convergence, Merceriantheorem

References

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20. M. Ye¸silkayagil, F. Ba¸sar, Domain of Riesz mean in some spaces of double sequences, under communication. Current address : Department of Mathematics, Fatih University, The Hadımköy Campus, Büyükçekmece, 34500 ·Istanbul, Turkey
21. E-mail address : [e-mail] & [e-mail] Current address : Medine Ye¸silkayagil: Department of Mathematics, U¸sak University, 1 Eylül Campus, 64200 U¸sak, Turkey
22. E-mail address : [e-mail]