Geodesic
On the Characterization of a Class of Four Dimensional Matrices and Steinhaus Type Theorems
Kragujevac Journal of Mathematics, Tome 40 (2016) no. 1, p. 35 Cet article a éte moissonné depuis la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

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In the present paper, we give the definitions of four dimensional conull and coregular matrices, and characterize the classes $(\mathcal{M}_{u}:\mathcal{C}_{\vartheta})$, where $\vartheta\in \{p,p0,f\}$ and $\mathcal{C}_{f}$ denotes the space of all almost convergent double sequences. Additionally, we give two Steinhaus type theorems related to the coercive/almost coercive four dimensional sequence to sequence matrix transformations.
Classification : 40C05
Keywords: Double sequence, double series, Pringsheim convergence, Steinhaus type theorems, matrix transformations 
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     title = {On the {Characterization} of a {Class} of {Four} {Dimensional} {Matrices} and {Steinhaus} {Type} {Theorems}},
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M. Yeşi; lkayagi; l; F. Başar. On the Characterization of a Class of Four Dimensional Matrices and Steinhaus Type Theorems. Kragujevac Journal of Mathematics, Tome 40 (2016) no. 1, p. 35 . http://geodesic.mathdoc.fr/item/KJM_2016_40_1_a2/