
This is again a very impressive and extensive paper of the author. Because of the abundance of the results it is not possible to recall or only illustrate all of them here. I gladly suggeste to read the whole paper. Among others two general inequalities are proved concerning matrix transformations of the \(\ell^p\)-spaces. The first theorem states that if \(p>1\) a summability matrix with decreasing rows must have large norm, but with increasing rows cannot. If \(0
summability matrices, Matrix methods for summability, Cesàro, Euler, Nörlund and Hausdorff methods, Hardy inequality, Inequalities for sums, series and integrals, matrix transformations, Hausdorff matrices
summability matrices, Matrix methods for summability, Cesàro, Euler, Nörlund and Hausdorff methods, Hardy inequality, Inequalities for sums, series and integrals, matrix transformations, Hausdorff matrices
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