On $L^1$-approximation of Trigonometric Series
In the paper  we defined three new classes of sequences motivated by the Logarithm Rest Bounded Variation Sequences defined by S.P. Zhou . By means of these
classes we extended Zhou's theorems pertaining to $L^1$-convergence of sine series. Very recently R.J. Le and S.P. Zhou  proved $L^1$-approximation theorems. Now we generalize their theorems to our wider classes.
eISSN 0975-5748; pISSN 0974-875X