Vector-Valued Shepard Processes: Approximation With Summability

Abstract

In this work, vector-valued continuous functions are approximated uniformly on the unit hypercube by Shepard operators. If lambda denotes the usual parameter of the Shepard operators and m is the dimension of the hypercube, then our results show that it is possible to obtain a uniform approximation of a continuous vector-valued function by these operators when lambda >= m+1. By using three-dimensional parametric plots, we illustrate this uniform approximation for some vector-valued functions. Finally, the influence in approximation by regular summability processes is studied, and their motivation is shown.