Mathematical Communications, vol.17, no.1, pp.83-91, 2012 (SCI-Expanded)
In this paper, we estimate the third and the fourth order central moments for the difference of the Lupa ̧s q-analogue of the Bernstein operator and the limit q-Lupaş operator. We also prove a quantitative variant of Voronovskaja's theorem for R n;q.. © 2012 Department of Mathematics, University of Osijek.