Abstract
Let $\Omega$ be a compact convex subset of $\R^d$ and let $(L_n)_{n\in\N}$ be a sequence of positive linear operators that map $C(\Omega)$ into itself. We establish two Korovkin-type theorems in which the limit of the sequence of operators is not necessarily the identity.
Citation
Allal Guessab. Gerhard Schmeisser. "Two Korovkin-type theorems in multivariate approximation." Banach J. Math. Anal. 2 (2) 121 - 128, 2008. https://doi.org/10.15352/bjma/1240336298
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