Studia Scientiarum Mathematicarum Hungarica, vol.48, no.2, pp.205-219, 2011 (SCI-Expanded)
In this paper we study I-approximation properties of certain class of linear positive operators. The two main tools used in this paper are I-convergence and Ditzian-Totik modulus of smoothness. Furthermore, we define q-Lupaş-Durrmeyer operators and give local and global approximation results for such operators.