Asymptotic formulae of multivariate Bernstein approximation
Journal of Approximation Theory
Asymptotic expansion of multivariate conservative linear operators
Journal of Computational and Applied Mathematics
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In this paper we present a new result on the saturation of sequences of linear operators in a multivariate and simultaneous setting. Specifically, a small o saturation result is obtained for the partial derivatives of the classical Bernstein bivariate operators on the unit simplex. Solutions of boundary value problems for certain partial differential equations of elliptic type play an important role.