Abstract
In this paper, we present the Riesz potentials Iα and the generalized Riesz potentials Iα ν as the families of positive linear operators, depending on parameter α > 0. We investigate their pointwise convergence and convergence in the norm as α → 0. We investigate also the order of approximation of these families and show in particular that the order of approximation at the Lipschitz points is independent from Lipschitz degree. Mathematics subject classification (2000): 41A35, 26A33.
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