A strong converse inequality for left gamma quasi-interpolants in L_p-spaces

A characterization of weighted approximations by the Post-Widder and the Gamma operators

“…In [6] we gave a brief summary of the results related to the rate of global convergence in terms of weighted K-functionals and contained in [3,7,10,12,13]. In this paper we continue this line of investigations.…”

Approximation Properties of a New Gamma Operator

“…ese operators play important role in many elds inside applied mathematics [1][2][3][4][5][6][7][8][9][10][11]. A considerable amount of literature has been published on approximation processes.…”

Pointwise simultaneous approximation by left gamma quasi-interpolants

“…In order to obtain much faster convergence rate,quasiinterpolants G (k) n of G n in the sense of Sablonnière [8] are considered in [7] and studied quite well in the subsequent papers (e.g. [2], [3], [7]). …”