On the Characterization of Some Classes of Four-Dimensional Matrices and Almost B -Summable Double Sequences

الملخص EN

We firstly summarize the related literature about B r , s , t , u -summability of double sequence spaces and almost B r , s , t , u -summable double sequence spaces.

Then we characterize some new matrix classes of L s ′ : C f , B L s ′ : C f , and L s ′ : B C f of four-dimensional matrices in both cases of 0 < s ′ ≤ 1 and 1 < s ′ < ∞ , and we complete this work with some significant results.