TY - JOUR T1 - Domain of Jordan Totient Matrix in the Space of Almost Convergent Sequences AU - İlkhan Kara, Merve AU - Örnek, Gizemnur PY - 2022 DA - December Y2 - 2022 DO - 10.36753/mathenot.1022886 JF - Mathematical Sciences and Applications E-Notes JO - Math. Sci. Appl. E-Notes PB - Murat TOSUN WT - DergiPark SN - 2147-6268 SP - 199 EP - 207 VL - 10 IS - 4 LA - en AB - In this paper, the notion of almost convergence is used to obtain a space as the domain of a regular matrix. After defining a new type of core forcomplex-valued sequences, certain inclusion theorems are proved. KW - Jordan totient function KW - regular matrix KW - Almost convergence CR - [1] Lorentz, G.G.: A contribution to the theory of divergent sequences. Acta Math. 80, 167-190 (1948). CR - [2] Bas ̧ar,F.,Kiris ̧çi,M.:Almostconvergenceandgeneralizeddifferencematrix.Comput.Math.Appl.61,602-611(2011). CR - [3] Kiris ̧çi, M.: Almost convergence and generalized weighted mean II. J. Inequal. Appl. 2014 93, (2014). 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