1. On |A, δ|k-summability of orthogonal series Creator: Krasniqi, Xhevat Z. Format: bez média and svazek Type: model:article and TEXT Subject: orthogonal series and matrix summability Language: English Description: In the paper, we prove two theorems on |A, δ|k summability, 1 ≤ k ≤ 2, of orthogonal series. Several known and new results are also deduced as corollaries of the main results. Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public