This article presents positive linear operators that approximate functions using 3-variable Hermite-Appell polynomials, indicating their effectiveness in various function spaces.
The primary aim of this article is to present a sequence of positive linear operators utilizing 3‐variable degenerate Hermite‐Appell polynomials. We explore the approximation properties for functions within diverse spaces and evaluate the order of approximation for these operators. Finally, we support the approximation outcomes through visual representations.
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Riyasat et al. (2026) studied this question.
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