Pointwise approximation of modified conjugate functions by matrix operators of their Fourier series

Pointwise approximation of modified conjugate functions by matrix operators of conjugate Fourier series of 2 π / r $2\pi /r$ -periodic functions

“…Thus we obtain the results from [ 2 ] and Theorem A [ 1 , Theorem 8, p . 95], but in the case of [ 3 ] ( Theorem B and C ) we reduce the assumptions .…”

“…The next essential generalizations and improvements in [ 3 , Theorem 1] were given. In these results and (with ) instead of and , respectively, were taken.…”

“…Sci. 67:50–60, 2018 ) to the case when considered function is -periodic and the measure of approximation depends on r -differences of the entries of the considered matrices.…”