We obtain global rates of approximation by -Durrmeyer operators for the functions in the class . First, rates of approximation in terms of the norms of and and in terms of the ordinary modulus of smoothness are obtained. Subsequently, we obtain rates of approximation in terms of the generalized modulus of smoothness .
"Rate of approximation by -Durrmeyer operators in , ." Ann. Funct. Anal. 8 (3) 303 - 313, August 2017. https://doi.org/10.1215/20088752-0000015X