On matrix mappings into some strong Cesàro sequence spaces (Q434651)

The authors determine the classes \((X, Y_T\)) of matrix transformations from \(X\) into \(Y_T\) where \(X\) is one of the sequence spaces of all null, convergent and bounded complex sequences or of all absolutely convergent complex series, \(T\) is a triangle, \(Y_T\) is the matrix domain of \(T\) in \(Y\) and \(Y\) is any of the sets of all sequences that are summable, summable to zero or bounded by the strong Cesàro method of order 1 with a finite index which is greater than or equal to 1.