Direct, Inverse Theorems of Approximation by Linear Combinations of Weighted Baskakov--Durrmeyer Operators in Orlicz Spaces

In the paper, the authors introduce the Orlicz space corresponding to the Young function and, by virtue of the equivalent theorem between the modified Kfunctional and modulus of smoothness, establish the direct, inverse, and equivalent theorems for the linear combinations of Jacobi weighted Baskakov-Durrmeyer operators in the Orlicz spaces.