Direct and inverse approximation theorems of functions in the Musielak-Orlicz type spaces
arXiv:2004.09807 · doi:10.7153/mia-2021-24-23
Abstract
In Musilak-Orlicz type spaces , direct and inverse approximation theorems are obtained in terms of the best approximations of functions and generalized moduli of smoothness. The question of the exact constants in Jackson-type inequalities is studied.