We generalize the results of Krasniqi 2012 and Wei and Yu 2012 to the case of -differences.
"On Estimates of Deviation of Functions from Matrix Operators of Their Fourier Series by Some Expressions with -Differences of the Entries." Abstr. Appl. Anal. 2016 1 - 10, 2016. https://doi.org/10.1155/2016/9712878