On absolute cesaro summability factors of infinite series and fourier series

摘要

In this paper, using δ-quasi-monotone sequences, two general theorems on |C, α; δ|_k summability factors of infinite series, which generalize some known results concerning the |C, 1|_k and |C, α|_k summability factors, have been proved. Also we apply these theorems to Fourier series.