Approximation of functions by linear summation methods in the Orlicz type spaces. - Stanislav Chaichenko; Viktor Savchuk; Andrii Shidlich (CoRR, 2019)

Widths of functional classes defined by majorants of generalized moduli of smoothness in the spaces ${ mathcal S}^p$. - Fahreddin Abdullayev; Anatolii Serdyuk; Andrii Shidlich (CoRR, 2020)

Jackson-type inequalities and widths of functional classes in the Musielak-Orlicz type spaces. - Fahreddin Abdullayev; Stanislav Chaichenko; M. Imashkyzy; Andrii Shidlich (CoRR, 2020)

Direct and inverse theorems on the approximation of almost periodic functions in Besicovitch-Stepanets spaces. - Anatolii Serdyuk; Andrii Shidlich (CoRR, 2021)

Approximation on hexagonal domains by Taylor-Abel-Poisson means. - Jürgen Prestin; Viktor Savchuk; Andrii Shidlich (CoRR, 2022)

Actual problems of the approximation theory in metrics of discrete spaces on sets of summable periodic and almost periodic functions. - Anatolii Serdyuk; Andrii Shidlich (CoRR, 2024)